ORCID Profile
0000-0003-4919-6385
Current Organisations
University of Wollongong
,
University Of Chemical Technology And Metallurgy
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Materials Engineering | Materials Engineering Not Elsewhere Classified | Functional Materials | Electrochemistry | Manufacturing Engineering Not Elsewhere Classified | Composite Materials | Materials Engineering not elsewhere classified | Electrochemistry | Instruments And Techniques | Condensed Matter Physics—Electronic And Magnetic Properties; | Nanomaterials | Other Physical Sciences | Photonics and Electro-Optical Engineering (excl. Communications) | Nanotechnology | Microelectronics and Integrated Circuits | Ceramics | Chemical Sciences not elsewhere classified | Photodetectors, Optical Sensors and Solar Cells | Alloy Materials | Compound Semiconductors | Metals and Alloy Materials | Electrical Engineering | Biomedical Engineering Not Elsewhere Classified | Mechanical Engineering | Condensed Matter Physics—Structural Properties | Solid State Chemistry | Sensor (Chemical And Bio-) Technology | Electrical and Electronic Engineering | Physical Metallurgy | Inorganic Chemistry Not Elsewhere Classified | Energy Generation, Conversion and Storage Engineering | Chemical Engineering not elsewhere classified | Technology not elsewhere classified |
ANZSRC Socio-Economic Objective (SEO)
Energy storage | Metals (composites, coatings, bonding, etc.) | Energy Storage (excl. Hydrogen) | Renewable energy | Energy storage and distribution | Scientific instrumentation | Physical sciences | Environmentally Sustainable Energy Activities not elsewhere classified | Other | Renewable Energy not elsewhere classified | Chemical sciences | Consumer Electronic Equipment (excl. Communication Equipment) | Integrated Circuits and Devices | Manufactured products not elsewhere classified | Energy Storage, Distribution and Supply not elsewhere classified | Energy Transformation not elsewhere classified | Ceramics | Energy transformation | Electricity transmission | Nervous system and disorders | Cardiovascular system and diseases | Diagnostic methods | Solar-Photovoltaic Energy | Energy Conservation and Efficiency in Transport | Polymeric materials (e.g. paints) | Expanding Knowledge in the Chemical Sciences | Medical Instruments | Expanding Knowledge in Engineering | Transport equipment | Environmentally Sustainable Transport not elsewhere classified
Related Links
Publications
Titanium doped tin dioxide as potential UV filter with low photocatalytic activity for sunscreen products
Publisher: Elsevier BV
Date: 05-2016
Indirect radio-chemo-beta therapy: A targeted approach to increase biological efficiency of x-rays based on energy
Publisher: IOP Publishing
Date: 25-09-2015
DOI: 10.1088/0031-9155/60/20/7847
Abstract: Despite the use of multimodal treatments incorporating surgery, chemotherapy and radiotherapy, local control of gliomas remains a major challenge. The potential of a new treatment approach called indirect radio-chemo-beta therapy using the synergy created by combining methotrexate (MTX) with bromodeoxyuridine (BrUdR) under optimum energy x-ray irradiation is assessed. 9L rat gliosarcoma cells pre-treated with 0.01 μM MTX and/or 10 μM BrUdR were irradiated in vitro with 50 kVp, 125 kVp, 250 kVp, 6 MV and 10 MV x-rays. The cytotoxicity was assessed using clonogenic survival as the radiobiological endpoint. The photon energy with maximum effect was determined using radiation sensitization enhancement factors at 10% clonogenic survival (SER10%). The cell cycle distribution was investigated using flow cytometric analysis with propidium iodide staining. Incorporation of BrUdR in the DNA was detected by the fluorescence of labelled anti-BrUdR antibodies. The radiation sensitization enhancement exhibits energy dependence with a maximum of 2.3 at 125 kVp for the combined drug treated cells. At this energy, the shape of the clonogenic survival curve of the pharmacological agents treated cells changes substantially. This change is interpreted as an increased lethality of the local radiation environment and is attributed to supplemented inhibition of DNA repair. Radiation induced chemo-beta therapy was demonstrated in vitro by the targeted activation of combined pharmacological agents with optimized energy tuning of x-ray beams on 9 L cells. Our results show that this is a highly effective form of chemo-radiation therapy.
Spherical clusters of NiO nanoshafts for lithium-ion battery anodes
Publisher: The Electrochemical Society
Date: 2006
DOI: 10.1149/1.2345550
Metal–Organic Framework (MOF)‐Derived Nanoporous Carbon Materials
Publisher: Wiley
Date: 10-04-2019
Abstract: Metal-organic framework (MOF)-derived nanoporous carbon materials have attracted significant interest due to their advantages of controllable porosity, good thermal/chemical stability, high electrical conductivity, catalytic activity, easy modification with other elements and materials, etc. Thus, MOF-derived carbons have been used in numerous applications, such as environmental remediations, energy storage systems (i.e. batteries, supercapacitors), and catalysts. To date, many strategies have been developed to enhance the properties and performance of MOF-derived carbons. Herein, we introduce and summarize recent important approaches for advanced MOF-derived carbon structures with a focus on precursor control, heteroatom doping, shape/orientation control, and hybridization with other functional materials.
Phosphorous and Nitrogen Dual-Doped Carbon as a Highly Efficient Electrocatalyst for Sodium-Oxygen Batteries
Publisher: Research Square Platform LLC
Date: 16-09-2020
DOI: 10.21203/RS.3.RS-74647/V1
Abstract: Sodium-oxygen batteries have been regarded as promising energy storage devices due to their low overpotential and high energy density. Its applications, however, still face formidable challenges due to the lack of understanding about the influence of electrocatalysts on discharge products. Here, a phosphorous and nitrogen dual-doped carbon (PNDC) based cathode is synthesized to increase the electrocatalytic activity and to stabilize the NaO2 nanoparticle discharge products, leading to enhanced cycling stability when compared with the nitrogen-doped carbon (NDC). The PNDC air cathode exhibits a quite low overpotential (0.36 V) and long cycling stability for 120 cycles. The reversible formation/decomposition and stabilize ability of NaO2 discharge products are clearly proven by in-situ synchrotron X-ray diffraction and ex-situ X-ray diffraction. Based on the density functional theory calculation, the PNDC has much stronger adsorption energy (-2.85 eV) for NaO2 than that of NDC (-1.80 eV), which could efficiently stabilize the NaO2 discharge products.
Smart Triboelectric Nanogenerators Toward Human‐Oriented Technologies: Health Monitoring, Wound Healing, Drug Delivery
Publisher: Wiley
Date: 28-02-2023
Abstract: Advanced biotechnologies applying electricity to the human body have been studied and developed for a long time since their first invention, but these technologies still have explicit limitations that block their practical application to humans. In these circumstances, the triboelectric nanogenerator (TENG) has emerged as a breakthrough in the biotechnology field with its intrinsic advantages. In this review, an overview of the current development of TENGs for human‐oriented technologies is provided. The review starts with a brief explanation of the TENG mechanism and presents detailed reasons why it has become a focal point in these fields. Then, there are clear explanations of the TENG applicable mechanism in the field of health monitoring, wound healing, and drug delivery. After each explanation, related research and materials are covered in full detail, and all relevant research information is listed in the table. Finally, challenges and perspectives will be discussed for each part's future studies.
TiO2/(BiO)2CO3 nanocomposites for ultraviolet filtration with reduced photocatalytic activity
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TC01330F
Abstract: TiO 2 nanoparticles are typically used in sunscreens however, they have been shown to exhibit cyto- and genotoxicity, which is related to the photocatalytic activity and the subsequent formation of reactive oxygen species when exposed to ultraviolet radiation.
Synthesis of nanosized vanadium pentoxide/carbon composites by spray pyrolysis for electrochemical capacitor application
Publisher: Elsevier BV
Date: 02-2009
Nanostructured PbO materials obtained in situ by spray solution technique for Li-ion batteries
Publisher: Elsevier BV
Date: 09-2006
Investigation of ROS scavenging properties and in vitro cytotoxicity of oxygen-deficient La2O3-x nanostructure synthesized by spray pyrolysis method
Publisher: Springer Science and Business Media LLC
Date: 09-10-2020
The effect of Sb concentration on the superconducting properties and phase composition of Bi-Pb-Sb-Sr-Ca-Cu oxide materials
Publisher: Springer Science and Business Media LLC
Date: 06-1990
DOI: 10.1007/BF01309343
Influence of Mg on the superconductivity and phase composition of samples from the Bi-Pb(Sb)-Mg-Sr-Ca-Cu-O system
Publisher: Springer Science and Business Media LLC
Date: 09-1991
DOI: 10.1007/BF00696284
Liquid‐Crystal‐Mediated 3D Macrostructured Composite of Co/Co3O4 Embedded in Graphene: Free‐Standing Electrode for Efficient Water Splitting
Publisher: Wiley
Date: 03-03-2017
Sodium and Lithium Storage Properties of Spray-Dried Molybdenum Disulfide-Graphene Hierarchical Microspheres
Publisher: Springer Science and Business Media LLC
Date: 15-07-2015
DOI: 10.1038/SREP11989
Abstract: Developing nano/micro-structures which can effectively upgrade the intriguing properties of electrode materials for energy storage devices is always a key research topic. Ultrathin nanosheets were proved to be one of the potential nanostructures due to their high specific surface area, good active contact areas and porous channels. Herein, we report a unique hierarchical micro-spherical morphology of well-stacked and completely miscible molybdenum disulfide (MoS 2 ) nanosheets and graphene sheets, were successfully synthesized via a simple and industrial scale spray-drying technique to take the advantages of both MoS 2 and graphene in terms of their high practical capacity values and high electronic conductivity, respectively. Computational studies were performed to understand the interfacial behaviour of MoS 2 and graphene, which proves high stability of the composite with high interfacial binding energy (−2.02 eV) among them. Further, the lithium and sodium storage properties have been tested and reveal excellent cyclic stability over 250 and 500 cycles, respectively, with the highest initial capacity values of 1300 mAh g −1 and 640 mAh g −1 at 0.1 A g −1 .
Electro-oxidation of ethanol on Pt-WO 3/C electrocatalyst
Publisher: The Electrochemical Society
Date: 2006
DOI: 10.1149/1.2211807
A significant improvement in both low- and high-field performance of MgB2 superconductors through graphene oxide doping
Publisher: Elsevier BV
Date: 09-2013
An All-Integrated Anode via Interlinked Chemical Bonding between Double-Shelled-Yolk-Structured Silicon and Binder for Lithium-Ion Batteries
Publisher: Wiley
Date: 12-10-2017
Abstract: The concept of an all-integrated design with multifunctionalization is widely employed in optoelectronic devices, sensors, resonator systems, and microfluidic devices, resulting in benefits for many ongoing research projects. Here, maintaining structural/electrode stability against large volume change by means of an all-integrated design is realized for silicon anodes. An all-integrated silicon anode is achieved via multicomponent interlinking among carbon@void@silica@silicon (CVSS) nanospheres and cross-linked carboxymethyl cellulose and citric acid polymer binder (c-CMC-CA). Due to the additional protection from the silica layer, CVSS is superior to the carbon@void@silicon (CVS) electrode in terms of long-term cyclability. The as-prepared all-integrated CVSS electrode exhibits high mechanical strength, which can be ascribed to the high adhesivity and ductility of c-CMC-CA binder and the strong binding energy between CVSS and c-CMC-CA, as calculated based on density functional theory (DFT). This electrode exhibits a high reversible capacity of 1640 mA h g
Split-half-tubular polypyrrole@sulfur@polypyrrole composite with a novel three-layer-3D structure as cathode for lithium/sulfur batteries
Publisher: Elsevier BV
Date: 2015
Nitrogen doped graphene via thermal treatment of composite solid precursors as a high performance supercapacitor
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4RA17262K
Abstract: Nitrogen-doped graphene from solid precursors exhibited capacitance values greater than those of GO and graphene by factors of six and two, respectively.
The effects of cerium doping on the size, morphology, and optical properties of α-hematite nanoparticles for ultraviolet filtration
Publisher: Elsevier BV
Date: 11-2013
Tubular TiO2 Nanostructures: Toward Safer Microsupercapacitors
Publisher: Wiley
Date: 23-11-2017
Design of self-assembled TiO2 architectures: Towards hybrid nanotubular interfaces
Publisher: Wiley
Date: 30-01-2014
In-situ fabrication and characterisation of nanostructured Mn3O4 powders for electronic and electrochemical applications
Publisher: Elsevier BV
Date: 06-2007
The effects of Cs addition and different sintering conditions on YBCO-123 superconductors made from precursor or commercial 123 powder
Publisher: Springer Science and Business Media LLC
Date: 06-1996
DOI: 10.1007/BF00356013
Thermal stability and hydrogen storage property of Mg1.9Cu0.1Nix (x = 1.8, 1.9, 2.0 and 2.1) alloys
Publisher: Elsevier BV
Date: 12-2006
Structural study of Al-substituted nickel hydroxide
Publisher: Elsevier BV
Date: 06-2002
Multifunctional Fe2 O3 /CeO2 nanocomposites for free radical scavenging ultraviolet protection
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6RA10951A
Abstract: In this study we synthesized Fe 2 O 3 /CeO 2 composite nanoparticles with high ultraviolet absorption and free radical scavenging properties for application as multifunctional ultraviolet (UV) filters.
Synthesis of Nano-Hematite for Possible Use in Sunscreens
Publisher: American Scientific Publishers
Date: 03-2011
Abstract: Hematite nanoparticles were synthesized for ultraviolet filtration application by the precipitation method followed by calcination at different temperatures. A range of crystallite sizes between 37 and 85 nm (as determined by the Scherrer formula) was obtained, according to the temperature used for the calcination. An increase in the absorbance with increasing crystallite size was observed over the whole ultraviolet B and A range. The experimental band gap was 2.94 eV for the s le calcined at 500 degrees C and 3.08 eV for the s le calcined at 300 degrees C. The in vitro sun protection factor and protection factor-ultraviolet A of a water-in-oil emulsion made with the s le calcined at 500 degrees C as active ingredient were 9.21 and 8.81, respectively, which is higher than the protection factor-ultraviolet A values obtained for titanium dioxide and zinc oxide at the same mass concentration. The emulsion was found to be photostable.
Variations in the chemical composition of Bi(Pb)-Sr-Ca-Cu-O films deposited by spray pyrolysis method
Publisher: Elsevier BV
Date: 06-1997
High-Performance Multifunctional Graphene Yarns: Toward Wearable All-Carbon Energy Storage Textiles
Publisher: American Chemical Society (ACS)
Date: 17-02-2014
DOI: 10.1021/NN406026Z
Abstract: The successful commercialization of smart wearable garments is hindered by the lack of fully integrated carbon-based energy storage devices into smart wearables. Since electrodes are the active components that determine the performance of energy storage systems, it is important to rationally design and engineer hierarchical architectures atboth the nano- and macroscale that can enjoy all of the necessary requirements for a perfect electrode. Here we demonstrate a large-scale flexible fabrication of highly porous high-performance multifunctional graphene oxide (GO) and rGO fibers and yarns by taking advantage of the intrinsic soft self-assembly behavior of ultralarge graphene oxide liquid crystalline dispersions. The produced yarns, which are the only practical form of these architectures for real-life device applications, were found to be mechanically robust (Young's modulus in excess of 29 GPa) and exhibited high native electrical conductivity (2508 ± 632 S m(-1)) and exceptionally high specific surface area (2605 m(2) g(-1) before reduction and 2210 m(2) g(-1) after reduction). Furthermore, the highly porous nature of these architectures enabled us to translate the superior electrochemical properties of in idual graphene sheets into practical everyday use devices with complex geometrical architectures. The as-prepared final architectures exhibited an open network structure with a continuous ion transport network, resulting in unrivaled charge storage capacity (409 F g(-1) at 1 A g(-1)) and rate capability (56 F g(-1) at 100 A g(-1)) while maintaining their strong flexible nature.
Oxi-Redox Selective Breast Cancer Treatment: An in Vitro Study of Theranostic In-Based Oxide Nanoparticles for Controlled Generation or Prevention of Oxidative Stress
Publisher: American Chemical Society (ACS)
Date: 05-01-2021
Ultra-fast synthesis and properties of high dielectric constant calcium copper titanate (CCT) ceramics synthesized by electric discharge assisted mechanical milling in oxygen and argon plasma
Publisher: Elsevier BV
Date: 09-2015
New LaCu0.5Mn0.5O3 thin films deposited by the sol-gel process on different substrates
Publisher: Elsevier BV
Date: 07-1996
Surface engineering of self-assembled TiO2 nanotube arrays: A practical route towards energy storage applications
Publisher: Elsevier BV
Date: 02-2014
Growth and characteristics of ZnO nano-aggregates electrodeposited onto p-Si(111)
Publisher: Elsevier BV
Date: 11-2010
Superconductivity in the BiCdSrCaCu oxide system
Publisher: Elsevier BV
Date: 1990
Liquid crystalline dispersions of graphene-oxide-based hybrids: A practical approach towards the next generation of 3D isotropic architectures for energy storage applications
Publisher: Wiley
Date: 11-07-2014
Effect of boron powder purity on superconducting properties of MgB2
Publisher: IOP Publishing
Date: 14-03-2006
Paper-like free-standing polypyrrole and polypyrrole-LiFePO4 composite films for flexible and bendable rechargeable battery
Publisher: Elsevier BV
Date: 11-2008
Si-based anode materials for lithium rechargeable batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0JM01702G
Growths of MgB2 thin films by pulsed laser deposition
Publisher: Elsevier BV
Date: 09-2002
Gram-Scale Synthesis of Bimetallic ZIFs and Their Thermal Conversion to Nanoporous Carbon Materials
Publisher: MDPI AG
Date: 17-12-2019
DOI: 10.3390/NANO9121796
Abstract: The hybrid metal-organic frameworks (MOFs) with different Zn2+/Co2+ ratios are synthesized at room temperature with deionized water as the solvent. This use of deionized water can increase the yield of hybrid MOFs (up to 65–70%). After the pyrolysis, the obtained nanoporous carbons (NPCs) show a decrease in the surface area, in which the highest surface area is 655 m2 g−1. The as-prepared NPCs are subjected to activation with KOH in order to increase their surface area and convert cobalt nanoparticles (Co NPs) to Co oxides. These activated carbons are applied to electrical double-layer capacitors (EDLCs) and pseudocapacitors due to the presence of CoO and Co3O4 nanoparticles in the carbon framework, leading to significantly enhanced specific capacitance as compared to that of pristine NPCs. This synthetic method can be utilized in future research to enhance pseudocapacitance further while maintaining the maximum surface area of the carbon materials.
NO Sensitivity of Spinel Type Zn2SnO4 Spray Deposited Films
Publisher: Wiley
Date: 06-1998
DOI: 10.1002/(SICI)1521-396X(199806)167:2<R11::AID-PSSA999911>3.0.CO;2-8
Lanthanum doped SnO2 and ZnO thin films sensitive to ethanol and humidity
Publisher: Elsevier BV
Date: 02-2000
Studies of the electrochemical properties of nanosize Co3 O 4 oxide as an anode material for lithium-ion batteries
Publisher: Trans Tech Publications, Ltd.
Date: 04-2003
Spray Pyrolysis Preparation and Humidity Sensing Characteristics of Spinel Zinc Stannate Thin Films
Publisher: Elsevier BV
Date: 02-1997
Influence of additives on the morphological, phase and chemical characteristics of gas sensitive SnO2 sprayed films
Publisher: Springer Science and Business Media LLC
Date: 12-1996
DOI: 10.1007/BF00354440
Copper-doped SnO2 thin films for PH3 detection
Publisher: No publisher found
Date: 1992
Effect of Boron powder purity on superconducting properties of bulk MgB2
Publisher: Elsevier BV
Date: 09-2007
Alkaline doped BiPb(Sb)SrCaCuO superconducting materials
Publisher: Elsevier BV
Date: 05-1994
Fabrication and Properties of Spray-Dried Nanofeatured Spherical Ni(OH)<SUB>2</SUB> Materials
Publisher: American Scientific Publishers
Date: 12-2002
DOI: 10.1166/JNN.2002.157
Synthesis and characterization of LiCoxMnyNi1-x-yO2 as a cathode material for secondary lithium batteries
Publisher: Elsevier BV
Date: 06-2003
Comparison of photoprotection efficiency and antiproliferative activity of ZnO commercial sunscreens and CeO2
Publisher: Elsevier BV
Date: 10-2013
Synchrotron activation radiotherapy: Effects of dose-rate and energy spectra to tantalum oxide nanoparticles selective tumour cell radiosentization enhancement
Publisher: IOP Publishing
Date: 02-2020
Self-Assembled Multifunctional Hybrids: Toward Developing High-Performance Graphene-Based Architectures for Energy Storage Devices
Publisher: American Chemical Society (ACS)
Date: 02-07-2015
Perceived Versus Actual Distance to Local Physical-Activity Facilities: Does It Really Matter?
Publisher: Human Kinetics
Date: 05-2010
DOI: 10.1123/JPAH.7.3.323
Abstract: Research in adults shows poor agreement between self-reported and objectively measured proximity to physical activity resources however there is little such research in adolescents. This study assessed the level of agreement between self-reported and objective measures of distance to physical activity resources in adolescents and whether perceived or actual distance was related to actual use and physical activity levels. 110 New Zealand high school students (12−18 years) were asked the time (in minutes) it would take them to walk from their home to the nearest physical activity resource, and whether they had used it in the previous month. The distance from participants’ homes to the nearest resource was measured using GIS. Physical activity was assessed with accelerometers. Agreement was poor, with weighted Kappa Indices ranging from 0.1 to 0.4. The facilities used most frequently were schools (90%), public parks (76%), and playing fields (74%). Closer location was associated with higher use of some facilities only. Moderate-to-vigorous activity levels were not associated with self-reported or measured distance. Agreement between perceived and measured access is poor among adolescents. Further research is needed to understand how in idual and social factors interact with environmental factors and whether improving awareness improves use.
Synthesis of potential theranostic system consisting of methotrexate-immobilized (3-aminopropyl)trimethoxysilane coated α-Bi 2 O3 nanoparticles for cancer treatment
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA02160F
Band structure, magnetic, and transport properties of two dimensional compounds Sr2−xGdxCoO4
Publisher: AIP Publishing
Date: 09-04-2013
DOI: 10.1063/1.4799780
Abstract: The layered perovskite compound Sr2−xGdxCoO4 has not yet been subjected to detailed study so far. In this report, structures, transport, magnetic properties, and first principle calculations will be reported for the two dimensional compounds Sr2−xGdxCoO4 (x = 0.5, 0.75, 1, 1.25). Rietveld refinement revealed that these compounds are crystallized in K2NiF4-type structures with space group I4/mmm. It was found that the lattice parameter c decreases as x increases. Through the Curies Weiss fitting of the temperature dependent magnetization, it was found that the Sr1.25Gd0.75CoO4 s le exhibits a weak ferromagnetic to paramagnetic transition at about 62 K, with a Curie constant of 0.113 emu K/mol. Band structure calculations indicated that electrons of these compounds are spin polarized at the Fermi level. The 2-D Variable Range Hopping model fitting indicated that the two dimensional variable range hopping mechanism could be used to account for the conducting mechanism for these s les.
Synthesis of spherical porous vanadium pentoxide and its electrochemical properties
Publisher: Elsevier BV
Date: 10-2008
Nano-structured SnO2-carbon composites obtained by in situ spray pyrolysis method as anodes in lithium batteries
Publisher: Elsevier BV
Date: 08-2005
On the curve-fitting of XPS Ce(3d) spectra of cerium oxides by E. Paparazzo, Materials Research Bulletin 46 (2011) 323–326
Publisher: Elsevier BV
Date: 11-2012
Electrochemical biosensing strategies for DNA methylation analysis
Publisher: Elsevier BV
Date: 08-2017
DOI: 10.1016/J.BIOS.2017.02.026
Abstract: DNA methylation is one of the key epigenetic modifications of DNA that results from the enzymatic addition of a methyl group at the fifth carbon of the cytosine base. It plays a crucial role in cellular development, genomic stability and gene expression. Aberrant DNA methylation is responsible for the pathogenesis of many diseases including cancers. Over the past several decades, many methodologies have been developed to detect DNA methylation. These methodologies range from classical molecular biology and optical approaches, such as bisulfite sequencing, microarrays, quantitative real-time PCR, colorimetry, Raman spectroscopy to the more recent electrochemical approaches. Among these, electrochemical approaches offer sensitive, simple, specific, rapid, and cost-effective analysis of DNA methylation. Additionally, electrochemical methods are highly amenable to miniaturization and possess the potential to be multiplexed. In recent years, several reviews have provided information on the detection strategies of DNA methylation. However, to date, there is no comprehensive evaluation of electrochemical DNA methylation detection strategies. Herein, we address the recent developments of electrochemical DNA methylation detection approaches. Furthermore, we highlight the major technical and biological challenges involved in these strategies and provide suggestions for the future direction of this important field.
Comparison of GO, GO/MWCNTs composite and MWCNTs as potential electrode materials for supercapacitors
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1EE01039E
Li 2 S‐Based Li‐Ion Sulfur Batteries: Progress and Prospects
Publisher: Wiley
Date: 28-10-2021
Abstract: The great demand for high-energy-density batteries has driven intensive research on the Li-S battery due to its high theoretical energy density. Consequently, considerable progress in Li-S batteries is achieved, although the lithium anode material is still challenging in terms of lithium dendrites and its unstable interface with electrolyte, impeding the practical application of the Li-S battery. Li
Microenvironmental Behaviour of Nanotheranostic Systems for Controlled Oxidative Stress and Cancer Treatment
Publisher: MDPI AG
Date: 18-07-2022
DOI: 10.3390/NANO12142462
Abstract: The development of smart, efficient and multifunctional material systems for diseases treatment are imperative to meet current and future health challenges. Nanomaterials with theranostic properties have offered a cost effective and efficient solution for disease treatment, particularly, metal/oxide based nanotheranostic systems already offering therapeutic and imaging capabilities for cancer treatment. Nanoparticles can selectively generate/scavenge ROS through intrinsic or external stimuli to augment/diminish oxidative stress. An efficient treatment requires higher oxidative stress/toxicity in malignant disease, with a minimal level in surrounding normal cells. The size, shape and surface properties of nanoparticles are critical parameters for achieving a theranostic function in the microenvironment. In the last decade, different strategies for the synthesis of biocompatible theranostic nanostructures have been introduced. The exhibition of therapeutics properties such as selective reactive oxygen species (ROS) scavenging, hyperthermia, antibacterial, antiviral, and imaging capabilities such as MRI, CT and fluorescence activity have been reported in a variety of developed nanosystems to combat cancer, neurodegenerative and emerging infectious diseases. In this review article, theranostic in vitro behaviour in relation to the size, shape and synthesis methods of widely researched and developed nanosystems (Au, Ag, MnOx, iron oxide, maghemite quantum flakes, La2O3−x, TaOx, cerium nanodots, ITO, MgO1−x) are presented. In particular, ROS-based properties of the nanostructures in the microenvironment for cancer therapy are discussed. The provided overview of the biological behaviour of reported metal-based nanostructures will help to conceptualise novel designs and synthesis strategies for the development of advanced nanotheranostic systems.
Highly reversible lithium storage in spheroidal carbon-coated silicon nanocomposites as anodes for lithium-ion batteries
Publisher: Wiley
Date: 17-10-2006
Zinc doping effects on the structure, transport and magnetic properties of La0.7Sr0.3Mn1-xZnxO3 manganite oxide
Publisher: Informa UK Limited
Date: 2003
PH3 detection by SnO2-ZrO2 thin films
Publisher: Elsevier BV
Date: 09-1994
The effect of Ca, Sr, and Ba substitutions on the morphology and electrical resistivity of La1 − xAxCu0.5O3 thin films
Publisher: Elsevier BV
Date: 10-1996
Formation and processability of liquid crystalline dispersions of graphene oxide
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3MH00050H
Growth and characterization of thin ZnO films deposited on glass substrates by electrodeposition technique
Publisher: Elsevier BV
Date: 04-2010
Sulphur-polypyrrole composite positive electrode materials for rechargeable lithium batteries
Publisher: Elsevier BV
Date: 06-2006
CuS nanoflakes, microspheres, microflowers, and nanowires: Synthesis and lithium storage properties
Publisher: American Scientific Publishers
Date: 02-2013
Abstract: CuS nanostructured materials, including nanoflakes, microspheres composed of nanoflakes, microflowers, and nanowires have been selectively synthesized by a facile hydrothermal method using CuSO4 and thiourea as precursors under different conditions. The morphology of CuS particles were affected by the following synthetic parameters: temperature, time, surfactant, pH value, solvent, and concentration of the two precursors. The synthesized CuS nanomaterials were characterized by X-ray diffraction, Brunauer-Emmett-Teller N2 adsorption, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The electrochemical tests, including constant current charge-discharge and cyclic voltammetry, show the specific capacities of the different morphologies, as well as their rate capability. The nanowire electrode has near theoretical specific capacity and the best rate capability.
A new energy storage system: Rechargeable potassium-selenium battery
Publisher: Elsevier BV
Date: 05-2017
Theranostic two-dimensional superparamagnetic maghemite quantum structures for ROS-mediated cancer therapy.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TB01036K
Abstract: In this work, size- and shape-controlled two-dimensional (2D) superparamagnetic maghemite (γ-Fe2O3) quantum flakes (MQFs) with high surface area and mesoporosity were prepared by facile hydrothermal synthesis for biological applications. These quantum flakes exhibited superparamagnetic behaviours over a wide temperature range of 75-950 K with high saturation magnetization of Ms - 23 emu g-1 and a lower coercivity of Hc - 6.1 Oe. MQFs also demonstrated a good colloidal stability and a positively charged flake surface. Selective toxicity dependent upon selective ROS scavenging/generation and cellular MQF uptake towards non-malignant human keratinocyte (HaCaT) and malignant melanoma (A357) and human breast cancer (MDA-MB 231) cell lines were witnessed. An increased ROS concentration resulted due to the peroxidase-like activity of MQFs in malignant cells. In contrast, ROS scavenging was observed in non-malignant cells due to dominant catalase-like activity. In vitro fluorescence properties added the diagnostic ability to the ambit of MQFs. Furthermore, the therapeutic efficiency could be significantly enhanced by the hyperthermic (25-47 °C) ability of MQF in cancerous cells. Our findings reveal the novel theranostic MQF structure with immense cancer therapeutic potential via augmentation of ROS generation by hyperthermia in a selective microenvironment.
Graphene oxide dispersions: tuning rheology to enable fabrication
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3MH00144J
Abstract: Ultra-large graphene oxide sheets exhibit unique viscoelastic properties, making them a new class of soft material. We provide fundamental insights enabling development of various fabrication techniques utilizing this 2D material.
Physical and electrochemical properties of doped lithium iron phosphate electrodes
Publisher: Elsevier BV
Date: 11-2004
Application of the metallurgical route for synthesis of 110 K Bi-Pb(Sb)-Sr-Ca-Cu-O superconducting oxides
Publisher: Springer Science and Business Media LLC
Date: 11-1994
Abstract: Bulk nearly single phase Bi-2223 materials doped with Pb and Sb were prepared using the metallurgical route. Li-doped s les were also synthesized, but Li leads to the 2212 phase and prevents the formation of the 2223 phase. The dependence of the sintering conditions on the phases obtained was studied and the influence of different factors on the melting temperature and the temperature required for the formation of the 2223 phase is discussed. For the materials with nominal composition Bi 1.5 Pb 0.3 Sb 0.1 Sr 2 Ca 2 Cu 3 S y , T c (zero) = 111 K was achieved. It was found that the Sb-rich phase segregates on the surface of the superconducting grains.
Density of states, magnetic and transport properties of Nd doped two dimensional perovskite compound Sr2CoO4
Publisher: AIP Publishing
Date: 24-02-2012
DOI: 10.1063/1.3672825
Abstract: Structures, transport, magnetic properties, and first principle calculation results will be reported for the two dimensional layered structured perovskite compounds Sr2-xNdxCoO4 (x = 0.5, 0.75, 1, 1.25). Structure refinement results revealed that these compounds crystallized in K2NiF4-type structures with space group I4/mmm. The temperature dependence of resistivity showed semiconductor like behavior for these s les. It was found that the lattice parameter c decreases as the doping level x increases. The compounds exhibited a paramagnetic to ferromagnetic transition at temperatures of about 170, 125 K for the x = 1 and 0.75 s les, respectively. The temperature dependence of resistivity for the s les can be well fitted by the 2D variable hoping (VRH) model ρ = ρo exp(T0/T)1/3 (where ρo is a material specific characteristic conductance, with unit Ω−1, T0 is a material specific characteristic temperature in K) over the whole measured temperature range. First principles calculations indicated that the Nd doped Sr2CoO4 compounds show high spin polarization.
Addition of Ca-compounds nanoparticles in melt-textured Bi : 2212
Publisher: Elsevier BV
Date: 09-2007
Suppression of the photocatalytic activity of TiO2 nanoparticles encapsulated by chitosan through a spray-drying method with potential for use in sunblocking applications
Publisher: Elsevier BV
Date: 04-2018
Effect of Bi and Sr concentrations on the formation of the 2223 phase in Bi-Pb-Sb-Sr-Ca-Cu-O materials, obtained under different conditions of thermal treatment
Publisher: Springer Science and Business Media LLC
Date: 12-1993
DOI: 10.1007/BF00617975
High performance pure sulfur honeycomb-like architectures synthesized by a cooperative self-assembly strategy for lithium–sulfur batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA07715F
Abstract: Honeycomb-like pure sulfur architectures were synthesized by a cooperative self-assembly strategy for improving electrochemical performance of Li–S batteries.
Nanostructured CoS2-Decorated Hollow Carbon Spheres: A Performance Booster for Li-Ion/Sulfur Batteries
Publisher: American Chemical Society (ACS)
Date: 27-05-2020
Effect of ZrO2 nucleant on crystallisation behaviour, microstructure and magnetic properties of BaO-Fe2 O3 -B2 O3 -SiO2 glass ceramics
Publisher: Elsevier BV
Date: 04-2007
Enhanced hydrogen storage in graphene oxide-MWCNTs composite at room temperature
Publisher: Wiley
Date: 03-08-2012
Multifunctional bismuth oxide (Bi2O3 ) particles: Evidence for selective melanoma therapy
Publisher: Wiley
Date: 02-03-2023
DOI: 10.1002/JBM.A.37524
Abstract: The current study investigates the therapeutic and optical properties of bismuth oxide (Bi 2 O 3 ) particles for selective melanoma therapy and prevention. The Bi 2 O 3 particles were prepared using a standard precipitation method. The Bi 2 O 3 particles induced apoptosis in human A375 melanoma cells but not human HaCaT keratinocytes or CCD‐1090Sk fibroblast cells. This selective apoptosis appears to be associated with a combination of factors: increased particle internalization (2.29 ± 0.41, 1.16 ± 0.08 and 1.66 ± 0.22‐fold of control) and enhanced production of reactive oxygen species (ROS) (3.4 ± 0.1, 1.1 ± 0.1 and 2.05 ± 0.17‐fold of control) in A375 cells compared to HaCaT and CCD‐1090SK cells, respectively. As a high‐Z element, bismuth is also an excellent contrast agent for computer tomography, which renders Bi 2 O 3 a theranostic material. Moreover, Bi 2 O 3 displays high UV absorption and low photocatalytic activity compared to other semiconducting metal oxides, which opens further potential fields of application as a pigment or as an active ingredient in sunscreens. Overall, this study demonstrates the multifunctional properties of Bi 2 O 3 particles surrounding the treatment and prevention of melanoma.
Local dose enhancement of proton therapy by ceramic oxide nanoparticles investigated with Geant4 simulations
Publisher: Elsevier BV
Date: 12-2016
DOI: 10.1016/J.EJMP.2016.11.112
Abstract: Nanoparticles (NPs) have been shown to enhance X-ray radiotherapy and proton therapy of cancer. The effectiveness of radiation damage is enhanced in the presence of high atomic number (high-Z) NPs due to increased production of low energy, higher linear energy transfer (LET) secondary electrons when NPs are selectively internalized by tumour cells. This work quantifies the local dose enhancement produced by the high-Z ceramic oxide NPs Ta
Ternary Porous Sulfur/Dual-Carbon Architectures for Lithium/Sulfur Batteries Obtained Continuously and on a Large Scale via an Industry-Oriented Spray-Pyrolysis/Sublimation Method
Publisher: American Chemical Society (ACS)
Date: 19-09-2016
Abstract: Ternary composites with porous sulfur/dual-carbon architectures have been synthesized by a single-step spray-pyrolysis/sublimation technique, which is an industry-oriented method that features continuous fabrication of products with highly developed porous structures without the need for any further treatments. A double suspension of commercial sulfur and carbon scaffolding particles was dispersed in ethanol/water solution and sprayed at 180 °C using a spray pyrolysis system. In the resultant composites, the sulfur particles were subjected to an ultrashort sublimation process, leading to the development of a highly porous surface, and were meanwhile coated with amorphous carbon, obtained through the pyrolysis of the ethanol, which acts as an adhesive interface to bind together the porous sulfur with the scaffolding carbon particles, to form a ternary composite architecture. This material has an effective conducting-carbon/sulfur-based matrix and interconnected open pores to reduce the diffusion paths of lithium ions, buffer the sulfur volumetric expansion, and absorb electrolyte and polysulfides. Because of the unique chemistry and the structure, the composites show stable cycling performance for 200 cycles and good rate capability of 520 mAh g(-1) at 2 C. This advanced spray-pyrolysis/sublimation method is easy to scale up and shows great potential for commercialization of lithium/sulfur batteries.
Determination of alkali metals in high-temperature Bi-containing superconductors by ICP-AES
Publisher: Springer Science and Business Media LLC
Date: 1995
DOI: 10.1007/BF00323086
Highly porous hematite nanorods prepared via direct spray precipitation method
Publisher: Elsevier BV
Date: 02-2014
Application of nanostructured Ca doped CeO2 for ultraviolet filtration
Publisher: Elsevier BV
Date: 05-2010
New approach for synthesis of carbon-mixed LiFePO4 cathode materials
Publisher: Elsevier BV
Date: 11-2004
Nanocrystalline NiO hollow spheres in conjunction with CMC for lithium-ion batteries
Publisher: Springer Science and Business Media LLC
Date: 11-04-2010
Development of CeO2 nanodot encrusted TiO2 nanoparticles with reduced photocatalytic activity and increased biocompatibility towards a human keratinocyte cell line
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TB00629G
Abstract: Low photocatalytic CeO 2 /TiO 2 nanocomposite particles with high UV attenuation and reduced ROS generation for application in sunscreen products.
High di-electric constant nano-structure ceramics synthesis using novel electric discharge assisted mechanical milling and magneto ball milling and its properties
Publisher: Inderscience Publishers
Date: 2014
Superconducting region in the phase diagram of the Bi-Cd-Sr-Ca-Cu-O system
Publisher: Springer Science and Business Media LLC
Date: 06-1991
DOI: 10.1007/BF00620787
Liquid crystalline graphene oxide/PEDOT:PSS self-assembled 3D architecture for binder-free supercapacitor electrodes
Publisher: Frontiers Media SA
Date: 04-08-2014
Electrochemical performance of nanocrystalline SnO 2-carbon nanotube composites as anode in lithium-ion cells
Publisher: American Scientific Publishers
Date: 02-2009
Abstract: SnO2-carbon nanotube composites were prepared by chemical treatment of tin chloride salt mixed with carbon nanotubes, followed by heat-treatment at high temperature. Nanosize SnO2 particles were formed and embedded in a carbon nanotube matrix. TEM and HRTEM observation confirmed the homogeneous distribution of SnO2 nanoparticles. SnO2-carbon nanotube anodes demonstrated high lithium storage capacity and stable cyclability, which could be attributed to the nanosize SnO2 crystals and the formation of carbon nanotube networks in the electrode.
Superconductivity at 103 K in CdBa2(Ca0.7Y0.3)Cu2O y
Publisher: Springer Science and Business Media LLC
Date: 06-1995
DOI: 10.1007/BF00728166
Understanding the Effects of the Low-Concentration Electrolyte on the Performance of High-Energy-Density Li–S Batteries
Publisher: American Chemical Society (ACS)
Date: 10-06-2021
Preparation of orthorhombic LiMnO2 material via the sol-gel process
Publisher: Elsevier BV
Date: 06-2003
Nanoarchitectonics of (110) directed polyethylene glycol stabilized cerium nanoparticles for UV filtering applications
Publisher: Springer Science and Business Media LLC
Date: 07-2022
DOI: 10.1007/S10853-022-07437-9
Abstract: The use of zinc oxide (ZnO) and titanium oxide (TiO 2 ) nanoparticles in ultraviolet (UV) filters can cause serious health issues due to their genotoxicity and cytotoxicity effect. Recent research on cerium oxide (CeO 2 ) nanoparticles has demonstrated their biocompatible nature, excellent antioxidant and ultraviolet–visible (UV–Vis) absorption properties. CeO 2 -based nanocomposite materials or nano-architectures can offer uniform absorptive properties, therapeutic skin effect and easy skin application. In this study, cerium oxide-polyethylene glycol (CeO 2 -PEG) nano-architecture was prepared by hydrothermal processing with the aim to improve stability, antioxidant properties, and enhance UV absorption for UV filtering applications. The morphology study of the developed nanocomposite revealed the formation of polymer bands with well-dispersed CeO 2 nanoparticles. The nanocomposite structure has exhibited excellent UV absorption in the UV range 200–400 nm due to decrease in optical band gap in comparison to the naked CeO 2 NPs. The evaluation of the photocatalytic activity (PCA) of the nanocomposite structure against P25 photocatalyst and ZnO nanoparticles showed no dye (crystal violet) degradation on UV irradiation. Hence, PCA assay verified the absence of ROS generation and increased stability of the nanostructure under UV irradiation. The investigation of antioxidant properties of the Ce-PEG nanocomposite by a dichlorofluorescein (DCF)-based assay revealed sufficient intracellular ROS scavenging in comparison to N-acetylcysteine (NAC) and H 2 O 2 only assays. In vitro toxicity evaluation of Ce-PEG nanocomposite towards non-malignant human keratinocyte cell line (HaCaT) revealed a non-significant cell mortality ~ 10% of control at a dosage of 50 mg L −1 . The nanocomposite structure also exhibited excellent UV protection for HaCaT cells under UV irradiation conditions compared to P25. Our findings suggest that the developed nanocomposite combined the antioxidant and UV absorption properties of CeO 2 and skin emollient role of (PEG), and hence offered a novel biocompatible and multifunctional structure for sunscreens and therapeutic skin product. Graphical abstract
Synthesis and characterization of Fe doped CeO 2 nanoparticles for pigmented ultraviolet filter applications
Publisher: American Scientific Publishers
Date: 05-2011
Abstract: Iron doped CeO2 nanoparticles with doping concentrations between 0 and 30 mol% were synthesized by the co-precipitation method for potential application as a pigmented ultraviolet filtration material. Each s le was calcined in air and in argon. The iron solubility limit in the CeO2 lattice was found to be between 10 and 20 mol%. Raman spectroscopy results revealed that both iron doping and argon calcination increase the concentration of oxygen vacancies in the CeO2 lattice. Iron doping causes a blue-shift of the absorbance spectrum, which can be linked to the decreased crystallite size, as obtained by XRD peak broadening using the Scherrer formula. The undoped s les showed weak ferromagnetic behaviour whereas the doped s les were all paramagnetic.
Optimizing dose enhancement with Ta2 O5 nanoparticles for synchrotron microbeam activated radiation therapy
Publisher: Elsevier BV
Date: 12-2016
DOI: 10.1016/J.EJMP.2016.10.024
Abstract: Microbeam Radiation Therapy (MRT) exploits tumour selectivity and normal tissue sparing with spatially fractionated kilovoltage X-ray microbeams through the dose volume effect. Experimental measurements with Ta
Synthesis-Dependent Surface Defects and Morphology of Hematite Nanoparticles and Their Effect on Cytotoxicity in Vitro
Publisher: American Chemical Society (ACS)
Date: 24-02-2016
Abstract: In this study, we investigate the toxicity of hematite (α-Fe2O3) nanoparticles on the Madin-Darby Canine Kidney (MDCK) cell line. The oxide particles have been synthesized through two different methods and annealing conditions. These two methods, spray precipitation and precipitation, resulted in particles with rod-like and spherical morphology and feature different particle sizes, surface features, and magnetic properties. Through flow cytometry it was found that particle morphology heavily influences the degree to which the nanomaterials are internalized into the cells. It was also found that the ability of the nanoparticles to generate free radicals species is hindered by the formation of tetrahedrally coordinated maghemite-like (γ-Fe2O3) spinel defects on the surfaces of the particles. The combination of these two factors resulted in variable cytotoxic effects of the hematite nanoparticles synthesized with different conditions. This article highlights the importance on the fabrication method, materials properties, and surface characteristics on the cytotoxicity of hematite nanomaterials.
A Facile Synthesis of High-Surface-Area Sulfur-Carbon Composites for Li/S Batteries
Publisher: Wiley
Date: 26-05-2015
Abstract: Small-grained elemental sulfur is precipitated from sodium thiosulfate (Na2 S2 O3 ) in a carbon-containing oxalic acid (HOOC-COOH) solution through a novel spray precipitation method. Surface area analysis, elemental mapping, and transmission electron micrographs revealed that the spray-precipitated sulfur particles feature 11 times higher surface area compared to conventional precipitated sulfur, with homogeneous distribution in the carbon. Moreover, the scanning electron micrographs show that these high-surface-area sulfur particles are firmly adhered to and covered by carbon. This precipitated S-C composite exhibits high discharge capacity with about 75 % capacity retention. The initial discharge capacity was further improved to 1444 mA h g(-1) by inserting a free-standing single-walled carbon nanotube layer in between the cathode and the separator. Moreover, with the help of the fixed capacity charging technique, 91.6 % capacity retention was achieved.
In-Situ fabrication of nanostructured cobalt oxide powders by spray pyrolysis technique
Publisher: American Scientific Publishers
Date: 09-2004
DOI: 10.1166/JNN.2004.098
Abstract: Nano-crystalline Co3O4 and CoO powders have been prepared by a spray pyrolysis approach. The effects of the reaction temperature and initial salts on the crystallinity and phase composition have been studied. Based on the TEM and XRD results, the crystal sizes were in the range of 1-10 nm. SEM and TEM observations also reveal that the nano-powders easily create micron-scale spherical agglomerates. The Co3O4 powders obtained by spraying nitrate solution at 500 degrees C show high specific surface area, which according to the BET method is 82.37 m2/g. The time/temperature phase diagram of cobalt oxides developed from XRD and DTA/TGA analyses shows the existence of a CoO phase at low and high temperature ranges when some specific preparation conditions are applied.
Boosting potassium-ion batteries by few-layered composite anodes prepared via solution-triggered one-step shear exfoliation
Publisher: Springer Science and Business Media LLC
Date: 07-09-2018
DOI: 10.1038/S41467-018-05786-1
Abstract: Earth-abundant potassium is a promising alternative to lithium in rechargeable batteries, but a pivotal limitation of potassium-ion batteries is their relatively low capacity and poor cycling stability. Here, a high-performance potassium-ion battery is achieved by employing few-layered antimony sulfide/carbon sheet composite anode fabricated via one-step high-shear exfoliation in ethanol/water solvent. Antimony sulfide with few-layered structure minimizes the volume expansion during potassiation and shortens the ion transport pathways, thus enhancing the rate capability while carbon sheets in the composite provide electrical conductivity and maintain the electrode cycling stability by trapping the inevitable by-product, elemental sulfur. Meanwhile, the effect of the exfoliation solvent on the fabrication of two-dimensional antimony sulfide/carbon is also investigated. It is found that water facilitates the exfoliation by lower diffusion barrier along the [010] direction of antimony sulfide, while ethanol in the solvent acts as the carbon source for in situ carbonization.
Electrochemical hydrogen storage properties of nonstoichiometric amorphous MgNi1 + x-carbon composites (x = 0.05-0.3)
Publisher: Elsevier BV
Date: 11-2006
Enhancement of the electrochemical capacitance of TiO 2 nanotube arrays through controlled phase transformation of anatase to rutile
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CP40410A
Abstract: Here, we report the fabrication of self-organized titania (TiO(2)) nanotube array supercapacitor electrodes through controlled phase transformation of TiO(2), with aerial capacitances as high as 2.6 mF cm(-2), which far exceeds the values so far reported in the literature. The role of phase transformation in the electrochemical charge-discharge behaviour of nanocrystalline TiO(2) nanotubes is investigated and discussed in detail. The ease of synthesis and the exceptional electrochemical properties make these nanotube arrays an alternative candidate for use in energy storage devices.
Nano-sunscreens – a double-edged sword in protecting consumers from harm: viewing Australian regulatory policies through the lenses of the European Union
Publisher: Informa UK Limited
Date: 07-02-2019
DOI: 10.1080/10408444.2019.1579780
Abstract: Nanotechnology has the potential to bring about revolutionary changes in manufacturing products, including sunscreens. However, a knowledge gap between benefits and detriments of engineered nano-materials used in sunscreens exists, which gives rise to safety concerns. This article is concerned with the protection of consumers without impairing the embellishment of this promising technology. It is widely argued that the harm associated with nano-sunscreens may only occur under certain conditions related mainly to users skin vulnerability, which can be avoided by informed and careful use of such a product. We thus recognize the need for fostering the growth of nanotech simultaneously with preventing potential harm. We revisit the Australian sunscreens regulatory policies, which embrace a "wait and see" approach, through the lens of regulatory policies in the European Union (EU) that are influenced by a "precautionary principle." We highlight the importance of informing consumers about the sunscreen they are using and recommend that product labels should disclose the presence of nano-ingredients in line with the EU disclosure requirements. This will allow users to carefully apply the product in order to avoid any potential harm and to protect manufacturers from possible costly litigation in future. This can be achieved through a combined collaborative effort of regulators, supply chain entities, and end users.
Wearable energy-smart ribbons for synchronous energy harvest and storage
Publisher: Springer Science and Business Media LLC
Date: 11-11-2016
DOI: 10.1038/NCOMMS13319
Abstract: A promising energy source for many current and future applications is a ribbon-like device that could simultaneously harvest and store energy. Due to the high flexibility and weavable property, a fabric/matrix made using these ribbons could be highly beneficial for powering wearable electronics. Unlike the approach of using two separate devices, here we report a ribbon that integrates a solar cell and a supercapacitor. The electrons generated by the solar cell are directly transferred and stored on the reverse side of its electrode which in turn also functions as an electrode for the supercapacitor. When the flexible solar ribbon is illuminated with simulated solar light, the supercapacitor holds an energy density of 1.15 mWh cm −3 and a power density of 243 mW cm −3 . Moreover, these ribbons are successfully woven into a fabric form. Our all-solid-state ribbon unveils a highly flexible and portable self-sufficient energy system with potential applications in wearables, drones and electric vehicles.
Multidisciplinary approaches for advanced enzyme biocatalysis in pharmaceuticals: protein engineering, computational biology, and nanoarchitectonics
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EY00239J
Study of the effect of ceramic Ta2 O5 nanoparticle distribution on cellular dose enhancement in a kilovoltage photon field
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.EJMP.2016.09.006
Abstract: The application of nanoparticles (NPs) in radiotherapy is an increasingly attractive technique to improve clinical outcomes. The internalisation of NPs within the tumour cells enables an increased radiation dose to critical cellular structures. The purpose of this study is to investigate, by means of Geant4 simulations, the dose enhancement within a cell population irradiated with a 150kVp photon field in the presence of a varying concentration of tantalum pentoxide (Ta
Spray pyrolyzed PbO-carbon nanocomposites as anode for lithium-ion batteries
Publisher: The Electrochemical Society
Date: 2006
DOI: 10.1149/1.2172570
Synthesis of methotrexate-loaded tantalum pentoxide–poly(acrylic acid) nanoparticles for controlled drug release applications
Publisher: Elsevier BV
Date: 03-2019
DOI: 10.1016/J.JCIS.2018.11.097
Abstract: Over the past decade, there has been increasing interest in the use of multifunctional nanoparticles (NPs) for cancer treatment. Of importance are systems that can deliver drugs at a sustained rate to target cancer cells, which can result in higher efficiency and reduced systemic toxicity. In this study, we present the route for the synthesis of tantalum pentoxide (Ta
Supercapacitor Electrodes with Remarkable Specific Capacitance Converted from Hybrid Graphene Oxide/NaCl/Urea Films
Publisher: American Chemical Society (ACS)
Date: 26-06-2017
Abstract: A novel approach to improve the specific capacitance of reduced graphene oxide (rGO) films is reported. We combine the aqueous dispersion of liquid-crystalline GO incorporating salt and urea with a blade-coating technique to make hybrid films. After drying, stacked GO sheets mediated by solidified NaCl and urea are hydrothermally reduced, resulting in a nanoporous film consisting of rumpled N-doped rGO sheets. As a supercapacitor electrode, the film exhibits a high gravimetric specific capacitance of 425 F g
Enhancement of the capacitance in TiO2 nanotubes through controlled introduction of oxygen vacancies
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0JM04085A
A conductive polypyrrole-coated, sulfur-carbon nanotube composite for use in lithium-sulfur batteries
Publisher: Wiley
Date: 27-02-2013
Na-doped ZnO UV filters with reduced photocatalytic activity for sunscreen applications
Publisher: Springer Science and Business Media LLC
Date: 16-10-2020
First proof of bismuth oxide nanoparticles as efficient radiosensitisers on highly radioresistant cancer cells
Publisher: Elsevier BV
Date: 11-2016
DOI: 10.1016/J.EJMP.2016.10.015
Abstract: This study provides the first proof of the novel application of bismuth oxide as a radiosensitiser. It was shown that on the highly radioresistant 9L gliosarcoma cell line, bismuth oxide nanoparticles sensitise to both kilovoltage (kVp) or megavoltage (MV) X-rays radiation. 9L cells were exposed to a concentration of 50μg.mL
Scalable One‐Step Wet‐Spinning of Graphene Fibers and Yarns from Liquid Crystalline Dispersions of Graphene Oxide: Towards Multifunctional Textiles
Publisher: Wiley
Date: 27-05-2013
Study of structure, transport, paramagnetic and ferromagnetic properties of La0.8Sr0.2Mn1-xZnxO3 perovskite manganite
Publisher: IOP Publishing
Date: 31-01-2002
High toxicity of Bi(OH)3 and α-Bi2 O3 nanoparticles towards malignant 9L and MCF-7 cells
Publisher: Elsevier BV
Date: 12-2018
DOI: 10.1016/J.MSEC.2018.09.001
Abstract: Here we report the extreme toxicity in vitro of Bi(OH)
Y2O3 nanoparticles with 2D morphology as reactive oxygen species scavengers under ultraviolet radiation conditions
Publisher: Elsevier BV
Date: 09-2023
The effect of the microstructure, phase and chemical composition on the humidity sensing characteristics of SnO2-Fe2O3 spray deposited thin films using different iron salts
Publisher: Springer Science and Business Media LLC
Date: 08-1996
DOI: 10.1007/BF00356448
Cerium oxide based particles as possible alternative to ZnO in sunscreens: Effect of the synthesis method on the photoprotection results
Publisher: Elsevier BV
Date: 02-2012
Preparation of spherical clusters of metal oxide nanorods and their hydrogen storage behavior
Publisher: Elsevier BV
Date: 12-2006
Stoichiometry-controlled high-performance LiCoO2 electrode materials prepared by a spray solution technique
Publisher: Elsevier BV
Date: 06-2003
Defect-Rich La2O3 Nanoparticles with Antioxidant Activity for Human Keratinocytes
Publisher: American Chemical Society (ACS)
Date: 09-06-2021
Synthesis of vanadium pentoxide powders with enhanced surface-area for electrochemical capacitors
Publisher: Elsevier BV
Date: 11-2006
Rietveld analysis of the effect of annealing atmosphere on phase evolution of nanocrystalline TiO 2 powders
Publisher: American Scientific Publishers
Date: 06-2012
Abstract: The structural evolution of nanocrystalline TiO2 was studied by X-ray diffraction (XRD) and the Rietveld refinement method (RRM). TiO2 powders were prepared by the sol-gel technique. Post annealing of as-synthesized powders in the temperature range from 500 degrees C to 800 degrees C under air and argon atmospheres led to the formation of TiO2 nanoparticles with mean crystallite size in the range of 37-165 nm, based on the Rietveld refinement results. It was found that the phase structure, composition, and crystallite size of the resulting particles were dependent on not only the annealing temperature, but also the annealing atmosphere. Rietveld refinement of the XRD data showed that annealing the powders under argon atmosphere promoted the polymorphic phase transformation from anatase to rutile. Field emission scanning electron microscopy (FESEM) was employed to investigate the morphology and size of the annealed powders.
Electrochemical properties of orthorhombic LiMnO2 prepared by one-step middle-temperature solid-state reaction
Publisher: Elsevier BV
Date: 11-2002
Preparation of ceria films by spray pyrolysis method
Publisher: Elsevier BV
Date: 06-2000
Effect of the annealing time on the Pb concentration and phase composition of samples from the Bi-Pb-Sr-Ca-Cu-O system
Publisher: IOP Publishing
Date: 06-1990
Radiosensitisation enhancement effect of BrUdR and Ta2 O5 NSPs in combination with 5-Fluorouracil antimetabolite in kilovoltage and megavoltage radiation
Publisher: IOP Publishing
Date: 17-04-2018
Engineering of bismuth oxide nanoparticles to induce differential biochemical activity in malignant and nonmalignant cells
Publisher: Wiley
Date: 09-04-2014
Flux jumping and a bulk-to-granular transition in the magnetization of a compacted and sintered MgB2 superconductor
Publisher: Elsevier BV
Date: 09-2001
Lipoid proteinosis
Publisher: Elsevier BV
Date: 08-1992
DOI: 10.1016/0190-9622(92)70183-G
Abstract: Lipoid proteinosis (Urbach-Wiethe disease) is a rare, recessively inherited disorder that is characterized by the deposition of hyaline-like material in the skin, oral cavity, and other tissues. It usually appears in infancy with hoarseness. We report a case of lipoid proteinosis in a 10-year-old boy that demonstrates the characteristic clinical, histologic, and ultramicroscopic features of this disease.
In situ engineering of urchin-like reduced graphene oxide–Mn2O3–Mn3O4nanostructures for supercapacitors
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3RA44973D
Nanostructures, concentrations and energies: An ideal equation to extend therapeutic efficiency on radioresistant 9L tumor cells using Ta2 O5 ceramic nanostructured particles
Publisher: IOP Publishing
Date: 31-01-2017
Superconductivity above 90 K in the Bi-Mg-Sr-Ca-Cu-O system
Publisher: Springer Science and Business Media LLC
Date: 02-1991
DOI: 10.1007/BF00618296
Nano-structured spherical porous SnO2 anodes for lithium-ion batteries
Publisher: Elsevier BV
Date: 09-2006
Significant Reduction in Thermal Conductivity and Improved Thermopower of Electron-Doped Ba1– x Lax TiO3 with Nanostructured Rectangular Pores
Publisher: Wiley
Date: 15-03-2021
Conductivity improvements to spray-produced LiFePO4 by addition of a carbon source
Publisher: Elsevier BV
Date: 04-2004
Synthesis and characterization of SnO2-polypyrrole composite for lithium-ion battery
Publisher: Elsevier BV
Date: 12-2007
Cerium oxide nanoparticles: Influence of the high-Z component revealed on radioresistant 9L cell survival under X-ray irradiation
Publisher: Elsevier BV
Date: 10-2013
DOI: 10.1016/J.NANO.2013.02.008
Abstract: This article pioneers a study into the influence of the high-Z component of nanoparticles on the efficacy of radioprotection some nanoparticles offer to exposed cells irradiated with X-rays. We reveal a significant decrease in the radioprotection efficacy for cells exposed to CeO2 nanoparticles and irradiated with 10 MV and 150 kVp X-rays. In addition, analysis of the 150 kVp survival curve data indicates a change in radiation quality, becoming more lethal for irradiated cells exposed to CeO2 nanoparticles. We attribute the change in efficacy to an increase in high linear energy transfer Auger electron production at 150 kVp which counterbalances the CeO2 nanoparticle radioprotection capability and locally changes the radiation quality. This study highlights an interesting phenomenon that must be considered if radiation protection drugs for use in radiotherapy are developed based on CeO2 nanoparticles. CeO2 nanoparticles are thought to offer radioprotection however, this study reveals significant decrease in the radioprotection efficacy for cells exposed to CeO2 nanoparticles and irradiated with 10 MV and 150 kVp X-rays. This phenomenon must be considered when developing radiation protection drugs based on CeO2 nanoparticles.
The Dual Functions of Defect‐Rich Carbon Nanotubes as Both Conductive Matrix and Efficient Mediator for LiS Batteries
Publisher: Wiley
Date: 27-10-2021
Abstract: LiS batteries are considered a promising energy storage system owing to the great abundance of sulfur and its high specific capacity. Polysulfide shuttling and sluggish reaction kinetics in sulfur cathodes significantly degrade the cycle life of LiS batteries. A modified method is employed to create defects in carbon nanotubes (CNTs), anchoring polysulfides, and accelerating electrochemical reactions. The defect‐rich CNTs (D‐CNT) enable dramatic improvement in both cycling and rate performance. A specific capacity of 600 mAh g −1 with a current density of 0.5 C is achieved after 400 cycles, and even at a very high current density (5.0 C), a specific capacity of 434 mAh g −1 is observed. Cycling stability up to 1000 cycles is also achieved under the conditions of high sulfur loading and lean electrolyte. Theoretical calculations revealed that the improvement is mainly attributable to the electronic structure of defect‐rich carbon, which has higher binding energy with polysulfides because of the upshift of the p ‐band center. Furthermore, rotating disk electrode measurements demonstrate that the defect‐rich carbon can accelerate the polysulfide conversion process. It is anticipated that this new design strategy can be the starting point for mediator‐like carbon materials with good conductivity and high catalytic activity for LiS batteries.
Possibilities for formation of the 110 K phase 2223 in Sb or V doped Bi-Sr-Ca-Cu-O and Bi-Pb-Sr-Ca-Cu-O materials
Publisher: Springer Science and Business Media LLC
Date: 06-1992
DOI: 10.1007/BF00695729
One-step spray pyrolysis synthesized cuo-carbon composite combined with carboxymethyl cellulose binder as anode for lithium-ion batteries
Publisher: American Scientific Publishers
Date: 02-2012
Abstract: Copper oxide-carbon composite with hollow sphere structure has been synthesized by a one-step spray pyrolysis method and tested as anode material for lithium-ion batteries. Different analytical methods, including X-ray powder diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, thermogravimetric analysis, and systematic electrochemical tests were performed. The results demonstrate that the CuO-carbon composite in conjunction with carboxymethyl cellulose (CMC) binder has an excellent electrochemical performance, with a capacity of 577 mAh g(-1) up to 100 cycles. The usage of the water soluble binder, CMC, not only obviously improves the electrochemical performance, but also makes the electrode fabrication process much easier and more environmentally friendly.
ZnO/CeO2 nanocomposite with low photocatalytic activity as efficient UV filters
Publisher: Springer Science and Business Media LLC
Date: 27-02-2020
High-surface-area α-Fe2O3/carbon nanocomposite: One-step synthesis and its highly reversible and enhanced high-rate lithium storage properties
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B922237E
Spray pyrolysis deposition of polycrystalline magnesia films and their use as buffer layers in Bi(Pb)-Sr-Ca-Cu-O/MgO/Al2O3 (or glass ceramics) structures
Publisher: Elsevier BV
Date: 04-1997
Mass production of Li4Ti5O12 with a conductive network via in situ spray pyrolysis as a long cycle life, high rate anode material for lithium ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA05178E
Abstract: Nanocrystalline Li 4 Ti 5 O 12 was synthesized by an in situ spray pyrolysis technique followed by heat treatment in N 2 for short periods of time, resulting in self-contained carbon originating from the organic synthetic precursors. The excellent high rate capability and full battery tests indicate that this is a promising 4 anode candidate for high power lithium-ion batteries.
In situ fabrication of spherical porous tin oxide via a spray pyrolysis technique
Publisher: Elsevier BV
Date: 05-2006
Rapid synthesis of functional oxides by electric discharge assisted mechanical milling method
Publisher: Elsevier BV
Date: 09-2012
Globular reduced graphene oxide-metal oxide structures for energy storage applications
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1EE02784K
A proteomic characterization shows differences in the milk fat globule membrane of buffalo and bovine milk
Publisher: Elsevier BV
Date: 09-2017
Nanomaterials for lithium-ion rechargeable batteries
Publisher: American Scientific Publishers
Date: 2006
DOI: 10.1166/JNN.2006.103
Abstract: In lithium-ion batteries, nanocrystalline intermetallic alloys, nanosized composite materials, carbon nanotubes, and nanosized transition-metal oxides are all promising new anode materials, while nanosized LiCoO 2 , LiFePO 4 , LiMn 2 O 4 , and LiMn 2 O 4 show higher capacity and better cycle life as cathode materials than their usual larger-particle equivalents. The addition of nanosized metal-oxide powders to polymer electrolyte improves the performance of the polymer electrolyte for all solid-state lithium rechargeable batteries. To meet the challenge of global warming, a new generation of lithium rechargeable batteries with excellent safety, reliability, and cycling life is needed, i.e., not only for applications in consumer electronics, but especially for clean energy storage and for use in hybrid electric vehicles and aerospace. Nanomaterials and nanotechnologies can lead to a new generation of lithium secondary batteries. The aim of this paper is to review the recent developments on nanomaterials and nanotechniques used for anode, cathode, and electrolyte materials, the impact of nanomaterials on the performance of lithium batteries, and the modes of action of the nanomaterials in lithium rechargeable batteries.
Electrochemical and magnetic characterization of LiFePO 4 and Li 0.95Mg 0.05FePO 4 cathode materials
Publisher: Springer Science and Business Media LLC
Date: 13-12-2007
Evaluation of the phase composition of BPSCCO bulk samples by XRD- and susceptibility analysis
Publisher: Elsevier BV
Date: 04-1996
High-Z nanostructured ceramics in radiotherapy: First evidence of Ta 2 O5 -induced dose enhancement on radioresistant cancer cells in an MV photon field
Publisher: Wiley
Date: 16-10-2014
The effect of carbon doping on the upper critical field (Hc2) and resistivity of MgB2by using sucrose (C12H22O11) as the carbon source
Publisher: IOP Publishing
Date: 16-12-2008
Electrochemical performance of Co3O4-C composite anode materials
Publisher: The Electrochemical Society
Date: 2006
DOI: 10.1149/1.2197108
Biocompatible Bi(OH)3 nanoparticles with reduced photocatalytic activity as possible ultraviolet filter in sunscreens
Publisher: Elsevier BV
Date: 12-2018
Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures
Publisher: American Chemical Society (ACS)
Date: 22-04-2013
DOI: 10.1021/NN305906Z
Abstract: We introduce soft self-assembly of ultralarge liquid crystalline (LC) graphene oxide (GO) sheets in a wide range of organic solvents overcoming the practical limitations imposed on LC GO processing in water. This expands the number of known solvents which can support hiphilic self-assembly to ethanol, acetone, tetrahydrofuran, N-dimethylformamide, N-cyclohexyl-2-pyrrolidone, and a number of other organic solvents, many of which were not known to afford solvophobic self-assembly prior to this report. The LC behavior of the as-prepared GO sheets in organic solvents has enabled us to disperse and organize substantial amounts of aggregate-free single-walled carbon nanotubes (SWNTs, up to 10 wt %) without compromise in LC properties. The as-prepared LC GO-SWNT dispersions were employed to achieve self-assembled layer-by-layer multifunctional 3D hybrid architectures comprising SWNTs and GO with unrivalled superior mechanical properties (Young's modulus in excess of 50 GPa and tensile strength of more than 500 MPa).
Nanosize cobalt oxides as anode materials for lithium-ion batteries
Publisher: Elsevier BV
Date: 06-2002
A highly ordered titania nanotube array as a supercapacitor electrode
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CP02054K
Abstract: We report the synthesis of self-organized titania nanotubes and nanocrystalline titania powders employing an alternative and novel approach. Integrating these nanostructures in a binder-free working electrode improved the capacitance up to 911 μF cm(-2), which is around one to two orders of magnitude higher than the conventional electric double layer capacitors.
The effects of substitutions and type of substrates on the morphology of La0.8A0.2Cu0.5Mn0.5O3 (A = Ca, Sr, Ba) thin films
Publisher: Elsevier BV
Date: 06-1998
Preparation and properties of spherical LiNi0.75Co 0.25O2 as a cathode for lithium-ion batteries
Publisher: Elsevier BV
Date: 11-2004
Spray-pyrolyzed silicon/disordered carbon nanocomposites for lithium-ion battery anodes
Publisher: Elsevier BV
Date: 12-2007
Synthesis and electrochemical properties of V2O5 nanostructures prepared via a precipitation process for lithium-ion battery cathodes
Publisher: Elsevier BV
Date: 12-2007
Three dimensional cellular architecture of sulfur doped graphene: self-standing electrode for flexible supercapacitors, lithium ion and sodium ion batteries
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10933K
Abstract: Multifunctional cellular architecture of sulfur doped graphene paves the way for high performance flexible energy device application.
Investigation of cobalt oxides as anode materials for Li-ion batteries
Publisher: Elsevier BV
Date: 06-2002
Superconductivity in nearly single-phase Bi-Pb-Sr-Ca-Cu-O samples with different nominal compositions
Publisher: Springer Science and Business Media LLC
Date: 02-1993
DOI: 10.1007/BF00618505
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