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0000-0001-6453-0447
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The university of Wollonggong
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Publisher: CRC Press
Date: 12-07-2017
Publisher: American Chemical Society (ACS)
Date: 13-05-2008
DOI: 10.1021/CG701251J
Publisher: Elsevier BV
Date: 04-2019
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 2022
Publisher: Informa UK Limited
Date: 05-03-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3EE24134C
Publisher: Elsevier BV
Date: 07-2005
Publisher: Elsevier BV
Date: 07-2022
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 06-2018
Publisher: IOP Publishing
Date: 13-07-2009
DOI: 10.1088/0957-4484/20/31/315303
Abstract: A general sonochemical process is reported for the replication of photonic structures from Morpho butterfly wings in several hours. By selecting appropriate precursors, we can achieve exact replications of photonic structures in a variety of transparent metal oxides, such as titania, tin oxide and silica. The exact replications at the micro- and nanoscales were characterized by a combination of FE-SEM, TEM, EDX and Raman measurements. The optical properties of the replicas were investigated by using reflectance spectroscopy, and it was found that the interesting chromaticity of the reflected light could be adjusted simply by tuning the replica materials. An ultrasensitive SnO(2)-based chemical sensor was prepared from the SnO(2) replica. The sensor has a sensitivity of 35.3-50 ppm ethanol at 300 degrees C, accompanied by a rapid response and recovery (around 8-15 s), owing to its large surface area and photonic structure. Thus, this process could be developed to produce photonic structural ceramics which could be used in many passive and active infrared devices, especially high performance optical components and sensors.
Publisher: Springer Science and Business Media LLC
Date: 06-09-2018
DOI: 10.1186/S40759-018-0037-5
Abstract: Graphene has been reported to be a promising nanofiller in fabricating advanced metal matrix composites. Graphene nanosheets (GNSs) have been incorporated into an aluminium matrix composite using mechanical milling and hot pressing in the current study. The SEM observation shows that aluminium particles are firstly flattened into flakes, and then fractured/ rewelded into equiaxed particles as the ball milling progresses. The crystalline size is decreased and the lattice strain is increased during the ball milling, which are also intensified by the added GNSs. The hardness of the composite is increased by 115.1% with the incorporation of 1.0 vol. % GNSs. The local stress induced by the hard GNSs accelerates the milling process. The X-Ray diffraction patterns show that the intensity ratio of (111) to (200) can reflect the preferred orientation of the particle mixture, and the evolution of I(111)/I(200) agrees well with the observed results using SEM. The increased hardness is mainly attributed to the refined microstructure and Orowan strengthening.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA00047J
Abstract: 3D holey-graphene networks were constructed with a generalized ex situ method for various electroactive nanoparticles to expedite Li + /electron migration.
Publisher: Iron and Steel Institute of Japan
Date: 15-07-2019
Publisher: Springer Science and Business Media LLC
Date: 12-06-2017
DOI: 10.1038/S41598-017-03603-1
Abstract: Inspired by nature, herein we designed a novel construction of SnO 2 anodes with an extremely high lithium storage performance. By utilizing small sheets of graphene oxide, the partitioned-pomegranate-like structure was constructed (SnO 2 @C@half-rGO), in which the porous clusters of SnO 2 nanoparticles are partially supported by reduced graphene oxide sheets while the rest part is exposed (half-supported), like partitioned pomegranates. When served as anode for lithium-ion batteries, SnO 2 @C@half-rGO exhibited considerably high specific capacity (1034.5 mAh g −1 after 200 cycles at 100 mA g −1 ), superior rate performance and remarkable durability (370.3 mAh g −1 after 10000 cycles at 5 A g −1 ). When coupled with graphitized porous carbon cathode for lithium-ion hybrid capacitors, the fabricated devices delivered a high energy density of 257 Wh kg −1 at ∼200 W kg −1 and maintained 79 Wh kg −1 at a super-high power density of ∼20 kW kg −1 within a wide voltage window up to 4 V. This facile and scalable approach demonstrates a new architecture for graphene-based composite for practical use in energy storage with high performance.
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 07-2018
Publisher: Elsevier BV
Date: 2018
Publisher: Oxford University Press (OUP)
Date: 08-2005
Publisher: Elsevier BV
Date: 09-2015
Publisher: Elsevier BV
Date: 06-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9RA01924C
Abstract: Adsorption has been the focus of research on the treatment of heavy metal mercury pollution since it is among the most toxic heavy metals in existence.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CP05186J
Abstract: Activated g-C 3 N 4 with a distinct and efficient degradation process under visible-light irradiation was fabricated by using a chemical activation method.
Publisher: Elsevier BV
Date: 03-2011
Publisher: American Chemical Society (ACS)
Date: 30-07-2018
Abstract: Perovskite quantum dots (PeQDs) have emerged as a new kind of nanomaterial in various applications, especially light-emitting diodes (LEDs). However, the synthesis of PeQDs is relatively complicated and the electron transport layer (ETL) is usually fabricated in a vacuum because of the dissolution of PeQDs films in organic solvents, which will increase the difficulty and cost in mass production. Here, a simple one-step "ultrasonic bath" treatment to synthesis PeQDs is adopted and applied into the PeQDs-LEDs. Meanwhile, an all-solution process is developed to fabricate PeQDs-LEDs based on the solvent engineering strategy. By using methyl acetate (MeOAc) as the solvent of ETL, the all-solution-processed PeQDs-LEDs exhibit bright luminance with the maximum current efficiency of 3.26 cd/A. This work is simple and easy to be scaled up, which will pave a new way to the low-cost all-solution processable PeQDs-LEDs.
Publisher: American Chemical Society (ACS)
Date: 10-06-2014
DOI: 10.1021/AM502343S
Abstract: Sodium-ion batteries can be the best alternative to lithium-ion batteries, because of their similar electrochemistry, nontoxicity, and elemental abundance and the low cost of sodium. They still stand in need of better cathodes in terms of their structural and electrochemical aspects. Accordingly, the present study reports the first ex le of the preparation of Na2/3(Fe1/2Mn1/2)O2 hierarchical nanofibers by electrospinning. The nanofibers with aggregated nanocrystallites along the fiber direction have been characterized structurally and electrochemically, resulting in enhanced cyclability when compared to nanoparticles, with initial discharge capacity of ∼195 mAh g(-1). This is attributed to the good interconnection among the fibers, with well-guided charge transfers and better electrolyte contacts.
Publisher: MDPI AG
Date: 11-05-2023
Abstract: At present, Al matrix composites (AMCs) have drawn much attention owing to their light weight, high specific strength, high thermal conductivity, and superior excellent wear resistance, which endows them with great potential in the aerospace, automobile and military industries. In this study, AMCs with different Ti contents (0, 5 and 10 vol.%) were prepared by powder metallurgy. During the sintering, Al3Ti particles were in situ formed in the Al matrix. It was found that the Ti completely reacted with the Al matrix and formed fine in situ Al3Ti particles in Al-10Ti, while some large Ti-Al3Ti core-shell formed in Al-5Ti due to the incomplete reaction between the Ti and the Al matrix. Furthermore, the hardness of the composites was significantly improved by the in situ formed Al3Ti particles, reaching 143.3 HV in Al-5Ti and the highest value at 331.2 HV in Al-10Ti, respectively. The wear resistance of the composites is remarkably enhanced by Al3Ti particles compared to the unreinforced Al. Al-5Ti has the highest wear resistance among the s les. The wear resistance of the Al-10Ti composite becomes slightly deteriorated compared to Al-5Ti due to the brittle nature of Al3Ti, which leads to a three-body abrasive wear.
Publisher: Elsevier BV
Date: 03-2007
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4NR00477A
Abstract: A magnetite film with photonic structures, which possess spatial optical anisotropy properties and can be tuned by an external magnetic field, has been successfully fabricated by a simple sol–gel process.
Publisher: Trans Tech Publications, Ltd.
Date: 02-0009
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.15-17.762
Abstract: Surface graphitization is a well known defect that occurs when low carbon steel strip is batch annealed. A small addition of chromium (about 0.04 wt %) can be used to minimize the surface graphitization. However chromium and some other alloy elements, such as manganese used in this class of steel, have higher affinities for oxygen than iron. Therefore it is possible for them to be oxidized during batch annealing in a reducing environment to iron. Selective oxidation of these two elements gives rise to a risk of forming different surface defects that may affect the quality of the tinned surface. The edge defect is characterized as a region of low reflectivity on the tin plate product caused by grain boundary precipitates. A porous tin coating with a dull appearance is produced in the affected areas. Not only are the aesthetical values of the finished tin plate product affected but the corrosion resistance is also reduced. In this investigation surface oxides formed at grain boundary of low carbon steels annealed at 700°C in 5% hydrogen 95% nitrogen atmosphere were characterized using scanning electron microscopy and transmission electron microscopy. Two different oxide particles (Fe,Mn)O and MnCr2O4 were observed at the grain boundaries with the former five-fold coarser than the latter. It was found at the annealing temperature of 700°C, that the mean particle size of the (Fe,Mn)O depends on the manganese content, while the mean particle size, and distribution of the MnCr2O4 was dependent on chromium, but independent of manganese. The coarse (Fe,Mn)O precipitates pose no potential risks to electrolytic tinning as they will be removed by the pickling operation prior to tinning. Controlling the chromium content of the steel can minimize the potential risks posed by the MnCr2O4 to the quality of electrolytic tinning.
Publisher: Elsevier BV
Date: 02-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1RA00621E
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1RA00500F
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA02296D
Abstract: Li ion hybrid supercapacitors are summarized with an emphasis on the use of nitrogen doped graphene and activated carbons.
Publisher: IOP Publishing
Date: 17-05-2011
DOI: 10.1088/0957-4484/22/26/265401
Abstract: Spray pyrolysis was used to produce hollow hematite (α-Fe(2)O(3)) nanosphere (HHNS)/carbon nanotube (CNT) composite on a large scale. The method offers simplicity, high productivity, versatility, low cost, and suitability for industry. The structure is composed of hollow nanospheres in a network of CNTs. The possible formation mechanism of hollow α-Fe(2)O(3) nanospheres is due to the rapid evaporation of water and the super-hydrophobicity of the CNT surface. The electrochemical tests show that the HHNS/CNT composite is a promising lithium storage material in terms of high capacity (∼700 mAh g(-1)), good high-rate capability, and good cycle life (up to 150 cycles). The materials improve both lithium ion and electron transport, which are limiting factors on the high-rate capability of lithium-ion batteries. The production method can be easily adapted to produce a wide range of hollow metal oxide nanosphere/CNT composites.
Publisher: Royal Society of Chemistry (RSC)
Date: 12-11-2014
DOI: 10.1039/C4RA10967H
Publisher: IOP Publishing
Date: 07-06-2018
Abstract: Fibers with self-assembled photonic structures are of special interest due to their unique photonic properties and potential applications in the smart textile industry. Inspired by nature, the photonic-structured fibers were fabricated through the self-assembly of chiral nematic cellulose nanocrystals (CNCs) and the fibers showed tunably brilliant and selectively reflected colors under crossed-polarization. A simple wet-spinning method was applied to prepare composite fibers of the mixed CNC matrix and polyvinyl alcohol (PVA) additions. During the processing, a cholesteric CNC phase formed photonic fibers through a self-assembly process. The selective color reflection of the composite fibers in the polarized condition showed a typical red-shift tendency with an increase in the PVA content, which was attributed to the increased helical pitch of the CNC. Furthermore, the polarized angle could also alter the reflected colors. Owing to their excellent selective reflection properties under the polarized condition, CNC-based photonic fibers are promising as the next-generation of smart fibers, applied in the fields of specific display and sensing.
Publisher: Elsevier BV
Date: 02-2011
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 12-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1JM14290A
Publisher: Elsevier BV
Date: 04-2011
Publisher: Springer Science and Business Media LLC
Date: 02-07-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TA05101E
Abstract: Aqueous zinc ion batteries (ZIBs) are emerging as a highly promising alternative technology for grid-scale applications where high safety, environmental-friendliness, and high specific capacities are needed.
Publisher: Elsevier BV
Date: 07-2010
Publisher: American Chemical Society (ACS)
Date: 22-02-2017
DOI: 10.1021/JACS.6B12185
Abstract: Potassium-ion batteries (PIBs) are interesting as one of the alternative metal-ion battery systems to lithium-ion batteries (LIBs) due to the abundance and low cost of potassium. We have herein investigated Sn
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CP24062A
Abstract: A composite cathode material for lithium ion battery applications, Mo-doped LiFePO(4)/C, is obtained through a facile and fast microwave-assisted synthesis method. Rietveld analysis of LiFePO(4)-based structural models using synchrotron X-ray diffraction data shows that Mo-ions substitute onto the Fe sites and displace Fe-ions to the Li sites. Supervalent Mo(6+) doping can act to introduce Li ion vacancies due to the charge compensation effect and therefore facilitate lithium ion diffusion during charging/discharging. Transmission electron microscope images demonstrate that the pure and doped LiFePO(4) nanoparticles were uniformly covered by an approximately 5 nm thin layer of graphitic carbon. Amorphous carbon on the graphitic carbon-coated pure and doped LiFePO(4) particles forms a three-dimensional (3D) conductive carbon network, effectively improving the conductivity of these materials. The combined effects of Mo-doping and the 3D carbon network dramatically enhance the electrochemical performance of these LiFePO(4) cathodes. In particular, Mo-doped LiFePO(4)/C delivers a reversible capacity of 162 mA h g(-1) at a current of 0.5 C and shows enhanced capacity retention compared to that of undoped LiFePO(4)/C. Moreover, the electrode exhibits excellent rate capability, with an associated high discharge capacity and good electrochemical reversibility.
Publisher: IOP Publishing
Date: 02-09-2019
Abstract: Flexible supercapacitors based on fiber shaped electrodes exhibit great potential for practical applications in smart fabrics owing to their light weight, good flexibility, and excellent weaveability. Herein, manganosite/carbonized cellulose nanocrystal/reduced graphene oxide (MnO/CNC/rGO) ternary composite fibers were fabricated from liquid crystal spinning dopes through a continuous one-process method. The assembly of CNC and manganese oxide nanoparticles in GO aqueous dispersion not only prevents GO nanosheets from restacking, but also ensures a uniform intercalation of nanoparticles. After a chemical and thermal reduction, the carbonized CNC contributes for additional electrical double layer capacitance while the MnO for faradaic pseudocapacitance. A fiber supercapacitor was assembled by arranging two MnO/CNC/rGO ternary composite fibers coated with PVA/H
Publisher: Springer Science and Business Media LLC
Date: 27-03-2015
DOI: 10.1038/SREP09547
Publisher: IOP Publishing
Date: 06-11-2009
DOI: 10.1088/0957-4484/20/49/495502
Abstract: Using super-hydrophobic butterfly wings as templates, we developed an aqueous sol-gel soakage process assisted by ethanol-wetting and followed by calcination to fabricate well-organized porous hierarchical SnO(2) with connective hollow interiors and thin mesoporous walls. The exquisite hierarchical architecture of SnO(2) is faithfully replicated from the lightweight skeleton of butterfly wings at the level from nano- to macro-scales. On the basis of the self-assembly of SnO(2) nanocrystallites with diameter around 7.0 nm, the interconnected tubes (lamellas), the fastigiated hollow tubers (pillars) and the double-layered substrates further construct the biomorphic hierarchical architecture. Benefiting from the small grain size and the unique hierarchical architecture, the biomorphic SnO(2) as an ethanol sensor exhibits high sensitivity (49.8 to 50 ppm ethanol), and fast response/recovery time (11/31 s to 50 ppm ethanol) even at relatively low working temperature (170 degrees C).
Publisher: IOP Publishing
Date: 06-11-2009
DOI: 10.1088/0957-4484/20/49/495501
Abstract: A simple room-temperature solution chemical route for bulk synthesis of high quality alpha-Bi(2)O(3) nanowires has been demonstrated. The nanowires have a diameter of about 50 nm and a length in the range of several to tens of micrometers. It was found that oleic acid played an important role in directing the growth of alpha- Bi(2)O(3) nanowires along the [102] direction, and the diameter of the nanowires increased with an increase of the reaction temperature. Furthermore, the Bi(2)O(3) nanowire sensors are highly sensitive to ppm-levels of NO(2) in ambient air with fast response, good selectivity and stability, indicating their potential applications for environmental monitoring and pollution control.
Publisher: Iron and Steel Institute of Japan
Date: 2007
Publisher: Wiley
Date: 27-02-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4DT03615H
Abstract: A Fe/Fe 3 O 4 /N-carbon composite consisting of a porous carbon matrix containing a highly conductive N-doped graphene-like network and Fe/Fe 3 O 4 nanoparticles was prepared.
Publisher: Elsevier BV
Date: 03-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B912057B
Publisher: Elsevier BV
Date: 04-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA11833A
Publisher: Elsevier BV
Date: 10-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B911101H
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0JM03873C
Publisher: Elsevier BV
Date: 2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0EE00527D
Publisher: Wiley
Date: 07-12-2009
Abstract: Three-dimensional (3D) reticular SnO(2) thin films deposited on copper and stainless steel substrates were prepared by the electrostatic spray deposition (ESD) technique. The 3D reticular SnO(2) film exhibit a high reversible capacity near 300 mAh g(-1) up to the 50th cycle.
Publisher: Elsevier BV
Date: 05-2011
Publisher: Elsevier BV
Date: 05-2011
Publisher: Elsevier BV
Date: 03-2008
Publisher: Elsevier BV
Date: 09-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1RA00510C
Publisher: American Chemical Society (ACS)
Date: 31-08-2010
DOI: 10.1021/JP1063403
Publisher: Springer Science and Business Media LLC
Date: 08-2010
Abstract: SnO 2 @carbon nanofibers were synthesized by a combination of electrospinning and subsequent thermal treatments in air and then in argon to demonstrate their potential use as an anode material in lithium ion battery applications. The as-prepared SnO 2 @carbon nanofibers consist of SnO 2 nanoparticles/nanocrystals encapsulated in a carbon matrix and contain many mesopores. Because of the charge pathways, both for the electrons and the lithium ions, and the buffering function provided by both the carbon encapsulating the SnO 2 nanoparticles and the mesopores, which tends to alleviate the volumetric effects during the charge/discharge cycles, the nanofibers display a greatly improved reversible capacity of 420 mAh/g after 100 cycles at a constant current of 100 mA/g, and a sharply enhanced reversible capacity at higher rates (0.5, 1, and 2 C) compared with pure SnO 2 nanofibers, which makes it a promising anode material for lithium ion batteries.
Publisher: Elsevier BV
Date: 07-2010
Publisher: Elsevier BV
Date: 05-2010
Publisher: Informa UK Limited
Date: 18-12-2016
Publisher: Elsevier BV
Date: 11-2013
Publisher: Springer Science and Business Media LLC
Date: 06-05-2010
Publisher: Elsevier BV
Date: 04-2013
Publisher: Elsevier BV
Date: 12-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM14852H
Publisher: Elsevier BV
Date: 05-2018
Publisher: Springer Science and Business Media LLC
Date: 11-07-2018
Publisher: Elsevier BV
Date: 03-2021
Publisher: Trans Tech Publications, Ltd.
Date: 03-2015
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMR.1095.130
Abstract: High-speed steels are successfully manufactured to make work rolls in hot rolling steel mills. An understanding of their oxidation behaviour is crucial to the degradation of work rolls and the surface quality of rolled strip. In this paper, the high temperature oxidation behaviour of a work roll with high-speed steel material was investigated under isothermal conditions from 550 to 750 °C for 30 min in 20% humid air. The results indicate that molybdenum-rich carbides M 2 C are oxidised and protrude out of the surface, vanadium-rich carbides MC and iron and chromium-rich carbides are easily identified and less influenced, but the oxides grown on the matrix are relatively even at 550 and 600 °C. However, at higher temperature, MC carbides are severely oxidised and extend to their nearby areas, whereas M 7 C 3 zones can still be recognised but with more small particles grown on them.
Publisher: American Chemical Society (ACS)
Date: 26-08-2015
Abstract: A facile bottom-up method is reported here for the fabrication of N-doped graphene for oxygen reduction. It consists of a two-step calcination strategy and uses α-hydroxy acids (AHAs) as carbon source and melamine as nitrogen source. Three different AHAs, malic acid, tartaric acid, and citric acid, were chosen as the carbon sources. The prepared N-doped graphenes have a typical thin layered structure with a large specific surface area. It was found that the N content in the obtained N-doped graphenes varies from 4.12 to 8.11 at. % depending on the AHAs used. All of the s les showed high performance in oxygen reduction reaction (ORR). The N-doped graphene prepared from citric acid demonstrated the highest electrocatalytic activity, which is comparable to the commercial Pt/C and exhibited good durability, attributing to the high pyridinic N content in the composite.
Publisher: Elsevier BV
Date: 03-2020
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA04271A
Abstract: Potential use of Li 1+x (Mn 1/3 Ni 1/3 Fe 1/3 )O 2 hierarchical nanofibers as a cathode material in both lithium-ion and sodium-ion batteries.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 04-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B925287H
Publisher: Elsevier BV
Date: 03-2014
Publisher: Wiley
Date: 23-07-2014
Publisher: Elsevier BV
Date: 08-2013
DOI: 10.1016/J.WATRES.2012.10.056
Abstract: A newly designed N-doped porous carbon with magnetic nanoparticles formed in situ (RHC-mag-CN) was fabricated through simple impregnation then polymerization and calcination. The doped nitrogen in RHC-mag-CN was in the form of graphite-type layers with the composition of CN. The resultant nanocomposite maintained a high surface area of 1136 m(2) g(-1) with 18.5 wt% magnetic nanoparticles (Fe3O4 and Fe) inside, which showed a saturation magnetization (Ms) of 22 emu/g. When used as an adsorbent, the RHC-mag-CN demonstrated a very quick adsorption property for the removal of Cr(VI), during which 92% of Cr(VI) could be removed within 10 min for dilute solutions at 2 g L(-1) adsorbent dose. The high adsorption capacity (16 mg g(-1)) is related to the synergetic effects of physical adsorption from the surface area and chemical adsorption from complexation reactions between Cr(VI) and Fe3O4. Importantly, the basic CNs in RHC-mag-CN increase its negative charge density and simultaneously increase the adsorption of metallic cations, such as Cr(3+) formed in the acid solution from the reduction of Cr(VI). The formation of magnetic nanoparticles inside not only supplies complexing sites for the adsorption of Cr(VI), but also shows perfect magnetic separation performance from aqueous solution.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B920277C
Abstract: Restacked MoS(2) with enlarged c lattice parameter and surface area was prepared by exfoliation and restacking process, exhibiting high reversible lithium storage capacity and superior rate capability as anode material for lithium ion batteries.
Publisher: AIP Publishing
Date: 28-03-2011
DOI: 10.1063/1.3548831
Abstract: Co3O4 mesoporous nanowires with average single crystalline grain sizes of about 8 nm, 12nm, 25 nm, and 45 nm were synthesized by sintering of microwave-assisted hydrothermal processed belt-Co(OH)2 precursors at 300–500 °C for 2 h. Microstructure analysis was conducted by x-ray diffraction, x-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM), field emission SEM (FESEM), transmission electron microscopy (TEM), and high resolution TEM (HRTEM) to confirm the composition, structure, and orientation in the nanowires. Systematic magnetic measurements have also been conducted on the nanowires. It was found that the size and orientation have significant effects on the magnetic and exchange bias properties. The interesting finding was made that room temperature ferromagnetism appeared at 350 °C in the high orientation s les. Systematic comparison and analysis of the relationships among the grain size, microstructure, orientation (texture), surface electric structure (O vacancies), and defects with magnetic properties (ferromagnetism, coercive field, exchange bias, etc.) are presented in this work.
Publisher: Springer Science and Business Media LLC
Date: 16-05-2016
DOI: 10.1038/SREP25829
Abstract: Construction of metal oxide nanoparticles as anodes is of special interest for next-generation lithium-ion batteries. The main challenge lies in their rapid capacity fading caused by the structural degradation and instability of solid-electrolyte interphase (SEI) layer during charge/discharge process. Herein, we address these problems by constructing a novel-structured SnO 2 -based anode. The novel structure consists of mesoporous clusters of SnO 2 quantum dots (SnO 2 QDs), which are wrapped with reduced graphene oxide (RGO) sheets. The mesopores inside the clusters provide enough room for the expansion and contraction of SnO 2 QDs during charge/discharge process while the integral structure of the clusters can be maintained. The wrapping RGO sheets act as electrolyte barrier and conductive reinforcement. When used as an anode, the resultant composite (MQDC-SnO 2 /RGO) shows an extremely high reversible capacity of 924 mAh g −1 after 200 cycles at 100 mA g −1 , superior capacity retention (96%), and outstanding rate performance (505 mAh g −1 after 1000 cycles at 1000 mA g −1 ). Importantly, the materials can be easily scaled up under mild conditions. Our findings pave a new way for the development of metal oxide towards enhanced lithium storage performance.
Publisher: IOP Publishing
Date: 05-04-2005
Publisher: Wiley
Date: 05-04-2012
Publisher: IOP Publishing
Date: 21-10-2014
DOI: 10.1088/0957-4484/25/21/215401
Abstract: A H2O2-mediated hydrothermal method was developed for the fabrication of hydrophilic Ta2O5/graphene composite. The composite shows a superior H2 productivity, up to 30 mmol g(-1) h(-1) when used as a photocatalyst for water splitting, corresponding to an apparent quantum efficiency of 33.8% at 254 nm. This superior performance is due to the hydrophilic nature of the composite and more importantly due to the ultrafine Ta2O5 nanoparticles (about 4.0 ± 1.5 nm) which are covalently bonded with the conductive graphene. The hydrophilic property of the composite is attributed to the use of H2O2 in the hydrothermal process. The ultrafine size of the Ta2O5 particles which are covalently bonded with the graphene sheets is attributed to the use of sonication in the synthesis process. Furthermore, the hydrophilic Ta2O5/Gr composite is durable, which is beneficial to long term photocatalysis. The strategy reported here provides a new approach to designing photocatalysts with superior performance for H2 production.
Publisher: American Chemical Society (ACS)
Date: 18-03-2014
DOI: 10.1021/LA500299S
Abstract: We present a new type of electrochemical supercapacitors based on graphene nanowires. Graphene oxide (GO) olypyrrole (PPy) nanowires are prepared via electrodepostion of GO/PPy composite into a micoroporous Al2O3 template, followed by the removal of template. PPy is electrochemically doped by oxygen-containing functional groups of the GO to enhance the charging/discharging rates of the supercapacitor. A high capacitance 960 F g(-1) of the GO/PPy nanowires is obtained due to the large surface area of the vertically aligned nanowires and the intimate contact between the nanowires and the substrate electrode. The capacitive performance remains stable after charging and discharging for 300 cycles. To improve the thermal stability and long-term charge storage, GO is further electrochemically reduced into graphene and PPy is subsequently thermally carbonized, leading to a high capacitance of 200 F g(-1) for the resultant pure reduced graphene oxide/carbon based nanowire supercapacitor. This value of capacitance (200 F g(-1)) is higher than that of conventional porous carbon materials while the reduced graphene oxide/carbon nanowires show a lower Faraday resistance and higher thermal stability than the GO/PPy nanowires.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0JM01341B
Publisher: Wiley
Date: 18-06-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 24-11-2014
DOI: 10.1039/C4RA12260G
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 04-2011
Publisher: Elsevier BV
Date: 03-2011
Publisher: Elsevier BV
Date: 11-2020
Publisher: Elsevier BV
Date: 11-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6NR01875K
Abstract: Hierarchical photonic structures in nature are of special interest because they can be used as templates for fabrication of stimuli-responsive photonic crystals (PCs) with unique structures beyond man-made synthesis. The current stimuli-responsive PCs templated directly from natural PCs showed a very weak external stimuli response and poor durability due to the limitations of natural templates. Herein, we tackle this problem by chemically coating functional polymers, polyacrylamide, on butterfly wing scales which have hierarchical photonic structures. As a result of the combination of the strong water absorption properties of the polyacrylamide and the PC structures of the butterfly wing scales, the designed materials demonstrated excellent humidity responsive properties and a tremendous colour change. The colour change is induced by the refractive index change which is in turn due to the swollen nature of the polymer when the relative humidity changes. The butterfly wing scales also showed an excellent durability which is due to the chemical bonds formed between the polymer and wing scales. The synthesis strategy provides an avenue for the promising applications of stimuli-responsive PCs with hierarchical structures.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0RA05779G
Abstract: g-C 3 N 4 -based photocatalysts for photocatalytic CO 2 reduction.
Publisher: Elsevier BV
Date: 12-2010
Publisher: IOP Publishing
Date: 02-03-2018
Abstract: Nanoparticles, having the ability to self-assemble into an ordered structure in their suspensions, analogous to liquid crystals, have attracted extensive attention. Herein, we report a new type of colloidal gel with an ordered crystal structure assembled from 1D and 2D nanoparticles. The material has high elasticity and, more interestingly, it shows significant photoelasticity. Its refractive index can be tuned under external stress and exhibits an ultra-wide dynamic range (Δn) of the order of 10
Publisher: Elsevier BV
Date: 02-2019
Publisher: Elsevier BV
Date: 09-2011
DOI: 10.1016/J.ULTSONCH.2011.03.021
Abstract: Using ultrasonication we succeed in a controlled incorporation of TiO(2) nanoparticles on the graphene layers homogeneously in a few hours. The average size of the TiO(2) nanoparticles was controlled at around 4-5 nm on the sheets without using any surfactant, which is attributed to the pyrolysis and condensation of the dissolved TiCl(4) into TiO(2) by ultrasonic waves. The photocatalytic activity of the resultant graphene-TiO(2) composites containing 25 wt.% TiO(2) is better than that of commercial pure TiO(2). This is partly due to the extremely small size of the TiO(2) nanoparticles and partly due to the graphene-TiO(2) composite structure consisting of homogeneous dispersion of crystalline TiO(2) nanoparticles on the graphene sheets. As the graphene in the composites has a very good contact with the TiO(2) nanoparticles it enhances the photo-electron conversion of TiO(2) by reducing the recombination of photo-generated electron-hole pairs.
Publisher: Elsevier BV
Date: 06-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1NR10837A
Abstract: TiO(2)(B)@SnO(2)/carbon hybrid nanowires have been synthesized by two simple hydrothermal processes and subsequent heat treatment in argon. The composite has a unique architecture, as its morphology consists of particles having a TiO(2)(B) nanowire core and a porous SnO(2)/carbon nanoparticle shell layer. The unique core/shell structure and chemical composition will be useful for many potential applications, including the lithium ion battery. The electrochemical results on the composite are presented to demonstrate the superior cycling performance and rate capability of the TiO(2)(B)@SnO(2)/carbon nanowires. This composite exhibits a high reversible capacity of ∼669mAhg(-1), and excellent cycling stability, indicating that the composite is a promising anode material for Li-ion batteries.
Publisher: American Scientific Publishers
Date: 2011
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM34590K
Publisher: Institution of Engineering and Technology (IET)
Date: 2010
Publisher: Elsevier BV
Date: 08-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0NR00009D
Abstract: Novel plum-branch-like carbon nanofibers (CNFs) decorated with SnO2 nanocrystals have been synthesized by electrospinning and subsequent thermal treatment in an Ar/H2O atmosphere. The morphologies of the as-synthesized SnO2/CNF composites and the contents of carbon and SnO2 can be controlled by adjusting the heat treatment temperature. It is proposed that the growth of SnO2/CNF composites follows the outward diffusion of tin composites from the as-spun tin composite olyacrylonitrile (PAN) nanofibers, pyrolysis of PAN and oxidation of tin composites, and then formation of SnO2 nanocrystals around the CNFs. This novel 1D SnO2/CNF composite may have potential application in nanobatteries, nano fuel cells, and nanosensors. A preliminary result has revealed that the SnO2/CNF composite presents favourable electrochemical performance in lithium-ion batteries.
Publisher: Elsevier BV
Date: 03-2015
Publisher: Elsevier BV
Date: 07-2010
Publisher: Elsevier BV
Date: 04-2010
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA07946H
Abstract: A CNC composite film with a highly ordered structure on both the microscale (crystalline chain of cellulose) and macroscale (highly compacted lamella structure adjusted under an external magnetic field) presents a very high through-plane thermal conductivity of 0.798 W m −1 K −1 .
Publisher: Elsevier BV
Date: 04-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2009
DOI: 10.1039/B913993A
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM32822D
Publisher: Elsevier BV
Date: 03-2015
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 06-2014
Publisher: MDPI AG
Date: 09-04-2018
Publisher: Elsevier BV
Date: 10-2014
Publisher: American Chemical Society (ACS)
Date: 09-01-2020
Abstract: Highly efficient light-emitting electrochemical cells (LECs) have attracted tremendous interest because of their simple structures and low-cost fabrication processing, showing great potential for full-color displays and solid-state lighting. In this work, we rationally designed and synthesized two red-emitting cationic Ir(III) complexes, [Ir(tBuPBI)
Publisher: Elsevier BV
Date: 03-2014
DOI: 10.1016/J.ULTSONCH.2013.09.001
Abstract: Mesoporous titanium dioxide (TiO2) has been assembled inside the macropores of diatom frustules by sonochemical condensation of titania precursor, and then thermal treated at an elevated temperature. The resulting hierarchical macro/mesoporous-structures of the TiO2 inside diatom were confirmed by characterizations of X-ray diffraction (XRD) and transmission electron microscopy (TEM). The amount of TiO2 inside the periodic macropores of diatom was controlled by varying the sonication time. It was found that the resultant composite with only 30 wt% TiO2 loading delivered a high photocatalytic performance, even better than that of pure P25. This is attributed to its hierarchical macro/mesoporous structure as it provides a large number of accessible active sites for efficient transportations of guest species to framework binding sites. Other macro/mesoporous structures with a nearly endless variety of functional chemistries and shapes are expected to be produced, leading to a range of novel applications in remediation, molecular transportation and environmental field by using this facile strategy.
Publisher: American Chemical Society (ACS)
Date: 11-06-2018
Abstract: The development of high-performance thermal management materials to dissipate excessive heat both in plane and through plane is of special interest to maintain efficient operation and prolong the life of electronic devices. Herein, we designed and constructed a graphene-based composite film, which contains chiral liquid crystals (cellulose nanocrystals, CNCs) inside graphene oxide (GO). The composite film was prepared by annealing and compacting of self-assembled GO-CNC, which contains chiral smectic liquid crystal structures. The helical arranged nanorods of carbonized CNC act as in-plane connections, which bridge neighboring graphene sheets. More interestingly, the chiral structures also act as through-plane connections, which bridge the upper and lower graphene layers. As a result, the graphene-based composite film shows extraordinary thermal conductivity, in both in-plane (1820.4 W m
Publisher: Springer Science and Business Media LLC
Date: 08-08-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C5CC09348A
Abstract: Few-layered porous boron nitride nanosheets prepared using MgB 2 as a dynamic template show good CO 2 adsorption selectivity.
Publisher: Springer Science and Business Media LLC
Date: 12-2011
Publisher: Elsevier BV
Date: 09-2013
Publisher: American Chemical Society (ACS)
Date: 29-11-2011
DOI: 10.1021/JP2061128
Publisher: Springer Science and Business Media LLC
Date: 21-11-2012
Publisher: Wiley
Date: 23-08-2012
Publisher: Elsevier BV
Date: 05-2007
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7RA05770A
Abstract: AgBr nanoparticles on boron-doped reduced graphene oxide aerogels (AgBr/B-RGO) are synthesized by a facile hydrothermal method, showing a superior performance in the photoreduction of toxic hexavalent chromium in aqueous media under visible light.
Publisher: Elsevier BV
Date: 2011
Publisher: American Chemical Society (ACS)
Date: 20-05-2008
DOI: 10.1021/LA7037153
Abstract: A novel method for duplicating the hierarchical structures of biological substances at nanometer resolution in manganese oxides has been developed. This innovation uses natural biomorphic specimens, such as butterfly wing, cotton, and wood as templates. The biotemplates were first treated with either HCl/NaOH or HCl/H2O2/NaOH and then mixed with an aqueous solution of KMnO4. The treated biological materials were then ultrasonically irradiated, and finally, the biological templates were removed by calcination in air at temperatures between 500 and 800 degrees C. The structures of the resulting manganese oxides were characterized by a combination of XRD, FE-SEM, TEM and EDS. It was found that the fine hierarchical structures of the biological templates down to the nanometer scale were faithfully duplicated, and the duplication was positive. A mechanism for the positive replication is proposed and discussed in terms of the effects of the sonochemical reaction as well as the surface modification prior to the sonochemical reaction. The same sonochemical method can be extended to the duplication of intricate hierarchical structures of other biological forms in a large range of metal oxides.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0NR00487A
Abstract: The hydrothermal synthesis of well-soluble 1T′-MoS 2 sheets and the assembly of 1T′-MoS 2 /graphene oxide fibers from liquid crystals endow excellent electrochemical properties.
Publisher: Wiley
Date: 16-07-2015
Abstract: Herein, a facile strategy for the controllable synthesis of BiVO4@C core-shell nanoparticles on reduced graphene oxide (RGO) is reported. The BiVO4 particle size can be controlled in the process by adjusting the volume ratio of glycerol in the sol-gel solution. The glycerol layers adsorbed on BiVO4 (BiVO4@glycerol) made it possible to form hydrogen bonds between BiVO4@glycerol and graphene oxide with the assistance of ultrasound. After thermal treatment, glycerol adsorbed on the BiVO4 particles formed amorphous carbon shells to link the particles and RGO. As a result, the obtained RGO-BiVO4@C nanocomposite showed a five times higher rate in O2 evolution from water under visible-light irradiation. Also, it demonstrated a six times higher photocatalytic performance enhancement than that of pure BiVO4 in the degradation of Rhodamine B. The enhanced performance is attributed to the carbon shells that restrict the growth of BiVO4 , the reduced graphene oxide that improves the electronic conductivity of the composite, and importantly, the bonds formed between the carbon shells and RGO that reduce the recombination loss of photogenerated charges effectively. The strategy is simple, effective, and can be extended to other ternary oxides with controlled size and high performance.
Publisher: Elsevier BV
Date: 09-2011
DOI: 10.1016/J.ULTSONCH.2010.12.015
Abstract: Hierarchy structure of granum in chloroplast was replicated onto titania using a simple and tactical sonochemical method and calcination. The structures of TiO(2) replicas were characterized by XRD, FE-SEM and TEM and the pore structures were characterized by N(2) adsorption/desorption. As a comparison, the preparation without sonication by using impregnation then calcination method was conducted, which shows the efficiency of the ultrasound on the exact replication of granum from micrometers down to nanometers. The optical properties of the TiO(2) replica, the chloroplast and the commercial pure TiO(2) powder together with the compared replica were measured by absorbance spectroscopy. It was found that the absorbance intensity of the TiO(2) replica made by ultrasonication is much better than the soaked one, and is twice of that of the pure TiO(2) powder in ultraviolet - visible light range. The excellent light harvesting performance of the TiO(2) is attributed to the combination of the functionality from the inorganic oxide and the fine hierarchical biological structures.
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0NR00103A
Abstract: In this contribution, the subtle periodic nanostructures in butterfly wings and peacock feathers are applied as natural PhC matrices to in situ embed CdS nanocrystallites (nano-CdS) on the structure surface via a convenient solution process. The resulting nano-CdS/natural PhCs nanocomposites show typical 1D, quasi 1D and 2D PhC structures at the nanoscale, which is inherited from the corresponding natural periodic bio-matrices. Moreover, their reflection properties are investigated and show dependence on PhC type, structure parameter, loading amount, as well as collecting angle. This work suggests that natural periodic bio-structures could be perfect matrices to construct novel nanocomposite PhCs, whose photonic band structures are tunable and thus achieve controllable optical properties. Related ideas could inspire the design and synthesis of future nanocomposite PhCs.
Publisher: Wiley
Date: 25-10-2020
Publisher: American Chemical Society (ACS)
Date: 14-07-2014
DOI: 10.1021/NN503582C
Abstract: Structural phase transitions can be used to alter the properties of a material without adding any additional elements and are therefore of significant technological value. It was found that the hexagonal-SnS2 phase can be transformed into the orthorhombic-SnS phase after an annealing step in an argon atmosphere, and the thus transformed SnS shows enhanced sodium-ion storage performance over that of the SnS2, which is attributed to its structural advantages. Here, we provide the first report on a SnS@graphene architecture for application as a sodium-ion battery anode, which is built from two-dimensional SnS and graphene nanosheets as complementary building blocks. The as-prepared SnS@graphene hybrid nanostructured composite delivers an excellent specific capacity of 940 mAh g(-1)and impressive rate capability of 492 and 308 mAh g(-1) after 250 cycles at the current densities of 810 and 7290 mA g(-1), respectively. The performance was found to be much better than those of most reported anode materials for Na-ion batteries. On the basis of combined ex situ Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and ex situ X-ray diffraction, the formation mechanism of SnS@graphene and the synergistic Na-storage reactions of SnS in the anode are discussed in detail. The SnS experienced a two-structural-phase transformation mechanism (orthorhombic-SnS to cubic-Sn to orthorhombic-Na3.75Sn), while the SnS2 experienced a three-structural-phase transformation mechanism (hexagonal-SnS2 to tetragonal-Sn to orthorhombic-Na3.75Sn) during the sodiation process. The lesser structural changes of SnS during the conversion are expected to lead to good structural stability and excellent cycling stability in its sodium-ion battery performance. These results demonstrate that the SnS@graphene architecture offers unique characteristics suitable for high-performance energy storage application.
Publisher: American Chemical Society (ACS)
Date: 22-11-2013
DOI: 10.1021/AM4033444
Abstract: Hierarchical networks with highly interconnected V2O5 nanosheets (NSs) anchored on skeletons of carbon nanotubes (CNTs) are prepared by a facile hydrothermal treatment and a following calcination for the first time. Benefiting from these unique structural features, the as-prepared CNT@V2O5 material shows dramatically excellent electrochemical performance with remarkable long cyclability (137-116 mA h g(-1) after 400 cycles) at various high rates (20 C to 30 C) and very good rate capability for highly reversible lithium storage. The excellent electrochemical performance suggests its promising use as a cathode material for future lithium-ion batteries.
Publisher: Elsevier BV
Date: 05-2011
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA22765K
Publisher: The Electrochemical Society
Date: 2009
DOI: 10.1149/1.3154513
Publisher: Maney Publishing
Date: 03-05-2016
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 07-2010
Publisher: Elsevier BV
Date: 2023
Publisher: Elsevier BV
Date: 2011
Publisher: Elsevier BV
Date: 02-2017
Publisher: Wiley
Date: 24-06-2022
Abstract: Water splitting through photocatalysis and photoelectrochemical methods is a promising strategy for solar energy utilization. Graphene is widely used in solar‐driven overall water splitting because of its versatile properties. This review summarizes the preparation of graphene‐based photocatalysts and photoelectrodes and the functions of graphene, and highlights the challenges and prospects of the future applications of graphene in solar‐driven water splitting.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM30961K
Publisher: Informa UK Limited
Date: 10-1987
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA13324A
Publisher: Wiley
Date: 15-05-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2NR33223J
Abstract: A novel hierarchical star-like Co(3)O(4) was successfully synthesized from self-assembled hierarchical Co(OH)F precursors via a facile hydrothermal method and subsequent annealing in air. The morphological evolution process of the Co(OH)F precursors was investigated by examining the different reaction times during synthesis. First, hexagonal plates are formed, and then nanodiscs grow on the surface of the plates. Subsequently, dissolution and regrowth of Co(OH)F occur to form the star-like hierarchical structures. Co(3)O(4) obtained from thermal decomposition of the Co(OH)F precursor in air at 350 °C exhibited high reversible capacity as an anode material in lithium ion batteries. The specific charge capacity of 1036 mA h g(-1) was obtained in the first cycle at a current density of 50 mA g(-1), and after 100 cycles, the capacity retention was nearly 100%. When the current density was increased to 500 mA g(-1) and 2 A g(-1), the capacities were 995 and 641 mA h g(-1), respectively, after 100 cycles. In addition, a capacity of 460 mA h g(-1) was recorded at a current density of 10 A g(-1) in the rate capability test. The excellent electrochemical performance of the Co(3)O(4) electrodes can be attributed to the porous interconnected hierarchical nanostructures, which protect the small particles from agglomeration and buffer the volume change during the discharge-charge process.
Publisher: Elsevier BV
Date: 02-2015
Publisher: Elsevier BV
Date: 06-2011
Publisher: Wiley
Date: 10-11-2016
Abstract: Two-dimensional (2D) nanomaterials are one of the most promising types of candidates for energy-storage applications due to confined thicknesses and high surface areas, which would play an essential role in enhanced reaction kinetics. Herein, a universal process that can be extended for scale up is developed to synthesise ultrathin cobalt-/nickel-based hydroxides and oxides. The sodium and lithium storage capabilities of Co
Publisher: Elsevier BV
Date: 12-2015
Publisher: Springer Science and Business Media LLC
Date: 25-08-2012
Publisher: Elsevier BV
Date: 05-2017
Publisher: Trans Tech Publications, Ltd.
Date: 05-2018
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.923.8
Abstract: Graphene has been proved to be an excellent enhancer in metal matrix composites. Core-shell structured SiC nanoparticles and graphene nanosheets (GNSs) were fabricated and incorporated into aluminum matrix using ball milling in the current study. Graphite powder was exfoliated into thin GNSs, which are flexible to wrap SiC nanoparticles. The ductile aluminum particles were firstly flattened and then repeatedly welded and fractured into equalized particles during the ball milling of Al alloy-SiC-GNSs composite powder, which were observed using scanning electron microscopy and X-Ray diffraction. SiC-GNSs were embedded and dispersed into the aluminum matrix during the milling process.
Publisher: Elsevier BV
Date: 11-2015
Publisher: Springer Science and Business Media LLC
Date: 26-11-2010
Publisher: Springer Science and Business Media LLC
Date: 09-11-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0JM02113J
Location: United Kingdom of Great Britain and Northern Ireland
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