ORCID Profile
0000-0003-1985-0884
Current Organisation
University of Technology Sydney
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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.
Materials Engineering | Composite and Hybrid Materials | Materials Engineering not elsewhere classified | Nanomaterials | Functional Materials | Catalytic Process Engineering | Environmental Technologies | Fertilisers and Agrochemicals (Application etc.) | Environmental Engineering | Electrochemistry
Hydrogen Storage | Hydrogen-based Energy Systems (incl. Internal Hydrogen Combustion Engines) | Environmentally Sustainable Energy Activities not elsewhere classified | Expanding Knowledge in Technology | Renewable Energy not elsewhere classified | Energy Storage (excl. Hydrogen) | Preparation and Production of Energy Sources not elsewhere classified | Organic Fertilisers | Expanding Knowledge in Engineering |
Publisher: American Chemical Society (ACS)
Date: 16-11-2009
DOI: 10.1021/JZ900043C
Publisher: American Chemical Society (ACS)
Date: 17-08-2010
DOI: 10.1021/IC101543V
Abstract: A simple and efficient way to synthesize unsolvated sodium octahydrotriborate has been developed. This method avoids the use of dangerous starting materials and significantly simplifies the reaction setup, thus enabling convenient large-scale synthesis. The structure of the unsolvated compound has been determined through powder X-ray diffraction.
Publisher: Thomas Telford Ltd.
Date: 08-2021
Abstract: Carbon- and oxygen-doped hexagonal boron nitrides (BCNOs) with good chemical stability and photoresponsiveness to visible light are found to be promising metal-free catalysts for degradation of Rhodamine B (RhB). By doping with heteroatoms of carbon and oxygen, insulating hexagonal boron nitride was transformed into semiconducting BCNO. The BCNO photocatalyst presents photodegradation performance towards RhB, with degradation rates up to 1.39 h −1 (0.05 wt% catalyst loading). The active species involved in the photoreaction were demonstrated to be superoxide anion radical (˙O 2 − ) and holes (h + ), as opposed to ˙OH in the most studied titanium dioxide. The stability of BCNO in highly acidic environments was exploited for catalyst regeneration, as is necessary after long-term use and poisoning. This work demonstrates that BCNO is a promising low-cost and metal-free photocatalyst for environmental pollution remediation.
Publisher: Springer Science and Business Media LLC
Date: 08-10-2006
Publisher: Elsevier BV
Date: 03-2019
Publisher: Wiley
Date: 30-04-2014
Abstract: Attempts to synthesize solvent-free MgB12H12 by heating various solvated forms (H2O, NH3, and CH3OH) of the salt failed because of the competition between desolvation and dehydrogenation. This competition has been studied by thermogravimetric analysis (TGA) and temperature-programmed desorption (TPD). Products were characterized by IR, solution- and solid-state NMR spectroscopy, elemental analysis, and single-crystal or powder X-ray diffraction analysis. For hydrated salts, thermal decomposition proceeded in three stages, loss of water to form first hexahydrated then trihydrated, and finally loss of water and hydrogen to form polyhydroxylated complexes. For partially ammoniated salts, two stages of thermal decomposition were observed as ammonia and hydrogen were released with weight loss first of 14 % and then 5.5 %. Thermal decomposition of methanolated salts proceeded through a single step with a total weight loss of 32 % with the release of methanol, methane, and hydrogen. All the gaseous products of thermal decomposition were characterized by using mass spectrometry. Residual solid materials were characterized by solid-state (11)B magic-angle spinning (MAS) NMR spectroscopy and X-ray powder diffraction analysis by which the molecular structures of hexahydrated and trihydrated complexes were solved. Both hydrogen and dihydrogen bonds were observed in structures of [Mg(H2O)6B12H12]⋅6 H2O and [Mg(CH3OH)6B12H12]⋅6 CH3OH, which were determined by single-crystal X-ray diffraction analysis. The structural factors influencing thermal decomposition behavior are identified and discussed. The dependence of dehydrogenation on the formation of dihydrogen bonds may be an important consideration in the design of solid-state hydrogen storage materials.
Publisher: Elsevier BV
Date: 06-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2EE23039A
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA01362K
Abstract: This work demonstrates a simple approach to the development of NiCo 2 O 4 and nanoporous carbon composites for high-performance supercapacitor application.
Publisher: Elsevier BV
Date: 09-2006
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA04876A
Abstract: Nb-doped anatase TiO 2 anode materials with high reversible sodium storage capacities, excellent cycling stability and rate capability were synthesized by a sol–gel method.
Publisher: American Chemical Society (ACS)
Date: 20-11-2018
Abstract: Controlled propulsion of liquid droplets on a solid surface offers important applications in various fields, including fog harvesting, heat transfer, microfluidics, and microdevice technologies. The propulsion of the liquid droplet is realized only if the driven force exceeds the resistance force. Sometimes the directional propulsion of droplets only takes place at the Leidenfrost state to achieve enough lubrication for a vapor cushion. The thick vapor cushions levitate liquid droplets to reduce resistance force. However, it is still challenging to reduce the vapor cushion thickness and simultaneously realize the directional droplet's motion, especially below the Leidenfrost temperature. Here, a structurally hydrophobic boron nitride nanosheet (BNNS) grid surface was constructed with a two-direction topographical gradient, i. e., the perpendicular altitude gradient and the horizontal density gradient. The polar nature of the B-N bonds results in intrinsic hydrophilicity of the boron nitride layer, which increases the Leidenfrost point and facilitates wetting even at high temperature. Much thinner vapor-lubricating layers are competent in the droplet's directional motion below the Leidenfrost temperature of the BNNS grid surface because the air gap trapped within boron nitride nanosheet grids acts as a part of the lubrication layer.
Publisher: Elsevier BV
Date: 12-2006
Publisher: International Union of Crystallography (IUCr)
Date: 12-12-2009
Publisher: Wiley
Date: 05-05-2021
Abstract: Lithium borohydride (LiBH 4 ) has been attracting extensive attention as an exemplary high‐capacity complex hydride for solid‐state hydrogen storage applications because of its high hydrogen capacities (18.5 wt% and 121 kg H 2 m −3 ). However, the strong and highly directional covalent and ionic bonds within LiBH 4 structure induce high desorption temperatures, slow kinetics, and poor reversibility, which make large‐scale application impractical. To improve its hydrogen cycling performance, several strategies including cation/anion substitution, catalyst doping, reactive compositing, and nanoengineering, have been developed to tailor the thermodynamics and kinetics of hydrogen storage process. For ex le, largely reduced operation temperatures and remarkably improved hydrogen storage reversibility under moderate conditions have been achieved by the synergistic effect of nanostructuring and nanocatalysis. Herein, the state‐of‐the‐art development of LiBH 4 ‐based hydrogen storage materials is summarized, including the basic physical and chemical properties, the principles of thermodynamic and kinetic manipulation and the strategies to improve hydrogen storage properties. The remaining challenges and the main directions of future research are also discussed.
Publisher: American Chemical Society (ACS)
Date: 11-08-2020
Publisher: American Scientific Publishers
Date: 03-2006
DOI: 10.1166/JNN.2006.083
Abstract: Single-walled carbon nanotube (SWNT) papers were successfully prepared by dispersing SWNTs in Triton X-100 solution, then filtered by PVDF membrane (0.22 μ m pore size). The electrochemical behavior and the reversible hydrogen storage capacity of single-walled carbon nanotube (SWNT) papers have been investigated in alkaline electrolytic solutions (6 N KOH) by cyclic voltammetry, linear micropolarization, and constant current charge/discharge measurements. The effect of thickness and the addition of carbon black on hydrogen adsorption/desorption were also investigated. It was found that the electrochemical charge–discharge mechanism occurring in SWNT paper electrodes is somewhere between that of carbon nanotubes (physical process) and that of metal hydride electrodes (chemical process), and consists of a charge-transfer reaction (Reduction/Oxidation) and a diffusion step (Diffusion).
Publisher: Elsevier BV
Date: 03-2022
Publisher: Wiley
Date: 06-2015
Abstract: One of the limitations to the widespread use of hydrogen as an energy carrier is its storage in a safe and compact form. Herein, recent developments in effective high-capacity hydrogen storage materials are reviewed, with a special emphasis on light compounds, including those based on organic porous structures, boron, nitrogen, and aluminum. These elements and their related compounds hold the promise of high, reversible, and practical hydrogen storage capacity for mobile applications, including vehicles and portable power equipment, but also for the large scale and distributed storage of energy for stationary applications. Current understanding of the fundamental principles that govern the interaction of hydrogen with these light compounds is summarized, as well as basic strategies to meet practical targets of hydrogen uptake and release. The limitation of these strategies and current understanding is also discussed and new directions proposed.
Publisher: Elsevier BV
Date: 08-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6RA27088C
Abstract: A nitrogen-doped three-dimensional carbon framework is synthesized, and shows good Na + storage performance with excellent rate capability.
Publisher: Elsevier BV
Date: 2007
Publisher: Elsevier BV
Date: 10-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7CC01612C
Abstract: An efficient Fe 3 BO 6 anode with high capacity and excellent rate capability is studied, for the first time, for sodium-ion batteries.
Publisher: American Chemical Society (ACS)
Date: 26-05-2016
DOI: 10.1021/ACS.INORGCHEM.5B02755
Abstract: Combined synchrotron and neutron powder diffraction indicates that A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) compounds crystallize with triclinic P1̅ symmetry. Lattice parameters expand as expected with successive increases in the ionic radius of the A(2+) ion. Cation disorder on the octahedral sites increases as the ionic radii of A(2+) ion decreases. Direct-current magnetic susceptibility measurements indicate that all compounds with magnetic A(2+) ions order anti-ferromagnetically with transition temperatures ranging from 12 to 15 K. Effective magnetic moments for A3V4(PO4)6 (A = Mg, Mn, Fe, Co, Ni) are 5.16, 11.04, 10.08, 9.76, and 7.96 μB per formula unit, respectively, in line with calculated values for high-spin transition metal ions. With the exception of Co3V4(PO4)6 the ultraviolet-visible spectra are dominated by d-d transitions of the V(3+) ions. The striking emerald green color of Co3V4(PO4)6 arises from the combined effects of d-d transitions involving both V(3+) and Co(2+).
Publisher: Springer Science and Business Media LLC
Date: 27-03-2015
DOI: 10.1038/SREP09547
Publisher: Elsevier BV
Date: 03-2022
Publisher: Springer Science and Business Media LLC
Date: 23-03-2007
Publisher: Wiley
Date: 12-04-2021
Abstract: Amine–borane complexes have been extensively studied as hydrogen storage materials. Herein, we report a new amine–borane system featuring a reversible dehydrogenation and regeneration at room temperature. In addition to high purity H 2 , the reaction between ethylenediamine bisborane (EDAB) and ethylenediamine (ED) leads to unique boron–carbon–nitrogen 5‐membered rings in the dehydrogenation product where one boron is tricoordinated by three nitrogen atoms. Owing to the unique cyclic structure, the dehydrogenation product can be efficiently converted back to EDAB by NaBH 4 and H 2 O at room temperature. This finding could lead to the discovery of new amine boranes with potential usage as hydrogen storage materials.
Publisher: American Chemical Society (ACS)
Date: 20-05-2011
DOI: 10.1021/JP200541K
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA03436B
Abstract: A compact and conductive solid-electrolyte interphase formed by NaDFOB enables high performance of sodium metal batteries.
Publisher: American Chemical Society (ACS)
Date: 23-03-2023
Publisher: American Chemical Society (ACS)
Date: 12-04-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA03721B
Abstract: Porous Ni nanofibers (NFs) were synthesized via a single-nozzle electrospinning technique with subsequent calcination and reduction.
Publisher: Wiley
Date: 06-04-2020
Abstract: Boron's unique position in the Periodic Table, that is, at the apex of the line separating metals and nonmetals, makes it highly versatile in chemical reactions and applications. Contemporary demand for renewable and clean energy as well as energy‐efficient products has seen boron playing key roles in energy‐related research, such as 1) activating and synthesizing energy‐rich small molecules, 2) storing chemical and electrical energy, and 3) converting electrical energy into light. These applications are fundamentally associated with boron's unique characteristics, such as its electron‐deficiency and the availability of an unoccupied p orbital, which allow the formation of a myriad of compounds with a wide range of chemical and physical properties. For ex le, boron's ability to achieve a full octet of electrons with four covalent bonds and a negative charge has led to the synthesis of a wide variety of borate anions of high chemical and electrochemical stability—in particular, weakly coordinating anions. This Review summarizes recent advances in the study of boron compounds for energy‐related processes and applications.
Publisher: Elsevier BV
Date: 03-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA00236F
Abstract: Nitrogen-doped carbon coated Co 3 O 4 nanoparticles (Co 3 O 4 @NC) with high Na-ion storage capacity and unprecedented long-life cycling stability are reported in this paper.
Publisher: American Chemical Society (ACS)
Date: 02-08-2023
Publisher: Wiley
Date: 10-02-2023
DOI: 10.1002/EEM2.12429
Abstract: The development of high‐performance binders is a simple but effective approach to address the rapid capacity decay of high‐capacity anodes caused by large volume change upon lithiation/delithiation. Herein, we demonstrate a unique organic/inorganic hybrid binder system that enables an efficient in situ crosslinking of aqueous binders (e.g., sodium alginate (SA) and carboxymethyl cellulose (CMC)) by reacting with an inorganic crosslinker (sodium metaborate hydrate (SMH)) upon vacuum drying. The resultant 3D interconnected networks endow the binders with strong adhesion and outstanding self‐healing capability, which effectively improve the electrode integrity by preventing fracturing and exfoliation during cycling and facilitate Li + ion transfer. SiO anodes fabricated from the commercial microsized powders with the SA/0.2SMH binder maintain 1470 mAh g −1 of specific capacity at 100 mA g −1 after 200 cycles, which is 5 times higher than that fabricated with SA binder alone (293 mAh g −1 ). Nearly, no capacity loss was observed over 500 cycles when limiting discharge capacity at 1500 mAh g −1 . The new binders also dramatically improved the performance of Fe 2 O 3 , Fe 3 O 4 , NiO, and Si electrodes, indicating the excellent applicability. This finding represents a novel strategy in developing high‐performance aqueous binders and improves the prospect of using high‐capacity anode materials in Li‐ion batteries.
Publisher: Elsevier BV
Date: 02-2007
Publisher: Elsevier BV
Date: 06-2011
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE03160G
Abstract: Non-confined MgH 2 nanoparticles of 4–5 nm diameter enable reversible storage of hydrogen up to 6.7 wt% at 30 °C.
Publisher: Elsevier BV
Date: 05-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1TA09562E
Abstract: The lack of stability hinders the applications of pristine borophene. Functionalization imparts both stability and tunable properties allowing for wide application. This review focuses on the applications of functionalized 2D boron nanosheets.
Publisher: Frontiers Media SA
Date: 04-09-2020
Publisher: Wiley
Date: 12-04-2021
Abstract: Amine–borane complexes have been extensively studied as hydrogen storage materials. Herein, we report a new amine–borane system featuring a reversible dehydrogenation and regeneration at room temperature. In addition to high purity H 2 , the reaction between ethylenediamine bisborane (EDAB) and ethylenediamine (ED) leads to unique boron–carbon–nitrogen 5‐membered rings in the dehydrogenation product where one boron is tricoordinated by three nitrogen atoms. Owing to the unique cyclic structure, the dehydrogenation product can be efficiently converted back to EDAB by NaBH 4 and H 2 O at room temperature. This finding could lead to the discovery of new amine boranes with potential usage as hydrogen storage materials.
Publisher: American Chemical Society (ACS)
Date: 21-02-2023
Publisher: Wiley
Date: 12-12-2017
Abstract: Dendritic Pt nanospheres of 20 nm diameter are synthesized by using a highly concentrated surfactant assembly within the large-sized cage-type mesopores of mesoporous silica (LP-FDU-12). After diluting the surfactant solution with ethanol, the lower viscosity leads to an improved penetration inside the mesopores. After Pt deposition followed by template removal, the arrangement of the Pt nanospheres is a replication from that of the mesopores in the original LP-FDU-12 template. Although it is well known that ordered LLCs can form on flat substrates, the confined space inside the mesopores hinders surfactant self-organization. Therefore, the Pt nanospheres possess a dendritic porous structure over the entire area. The distortion observed in some nanospheres is attributed to the close proximity existing between neighboring cage-type mesopores. This new type of nanoporous metal with a hierarchical architecture holds potential to enhance substance diffusivity/accessibility for further improvement of catalytic activity.
Publisher: American Chemical Society (ACS)
Date: 15-08-2023
Publisher: Wiley
Date: 26-05-2021
Abstract: A significant obstacle in the large‐scale applications of sodium borohydride (NaBH 4 ) for hydrogen storage is its high cost. Herein, we report a new method to synthesize NaBH 4 by ball milling hydrated sodium tetraborate (Na 2 B 4 O 7 ⋅ 10H 2 O) with low‐cost Al or Al 88 Si 12 , instead of Na, Mg or Ca. An effective strategy is developed to facilitate mass transfer during the reaction by introducing NaH to enable the formation of NaAlO 2 instead of dense Al 2 O 3 on Al surface, and by using Si as a milling additive to prevent agglomeration and also break up passivation layers. Another advantage of this process is that hydrogen in Na 2 B 4 O 7 ⋅ 10H 2 O serves as a hydrogen source for NaBH 4 generation. Considering the low cost of the starting materials and simplicity in operation, our studies demonstrate the potential of producing NaBH 4 in a more economical way than the commercial process.
Publisher: Springer Science and Business Media LLC
Date: 09-2022
Publisher: American Chemical Society (ACS)
Date: 02-07-2019
Publisher: Elsevier BV
Date: 05-2021
Publisher: Elsevier BV
Date: 2022
Publisher: American Chemical Society (ACS)
Date: 09-12-2014
DOI: 10.1021/CG401230A
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC02901E
Abstract: Compatible with various common solvents, a new electrolyte salt NaDFOB has been studied, which enables excellent reversible capacity and high rate capability when used in Na/Na 0.44 MnO 2 half cells.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4CC08774G
Abstract: Commercial TiO 2 in a compatible electrolyte of 0.5 mol L −1 Mg(BH 4 ) 2 /LiBH 4 /TG ([LiBH 4 ] = 1.5 mol L −1 ) delivers high specific capacity, and excellent cycling stability and rate capability. This work opens up a new alternative for the development of rechargeable magnesium batteries.
Publisher: Elsevier
Date: 2015
Publisher: American Chemical Society (ACS)
Date: 09-03-2016
Abstract: Mg(2+)/Li(+) hybrid batteries have recently been constructed combining a Mg anode, a Li(+)-intercalation electrode, and an electrolyte containing both Mg(2+) and Li(+). These batteries have been reported to outperform all the previously reported magnesium batteries in terms of specific capacity, cycling stability, and rate capability. Herein, we report the outstanding electrochemical performance of Mg(2+)/Li(+) hybrid batteries consisting of a one-dimensional mesoporous TiO2(B) cathode, a Mg anode, and an electrolyte consisting of 0.5 mol L(-1) Mg(BH4)2 + 1.5 mol L(-1) LiBH4 in tetraglyme. A highly synergetic interaction between Li(+) and Mg(2+) ions toward the pseudo-capacitive reaction is proposed. The hybrid batteries show superior rate performance with 130 mAh g(-1) at 1 C and 115 mAh g(-1) at 2 C, together with excellent cyclability up to 6000 cycles.
Publisher: MDPI AG
Date: 29-06-2021
Abstract: The hybrid ion capacitor (HIC) is a hybrid electrochemical energy storage device that combines the intercalation mechanism of a lithium-ion battery anode with the double-layer mechanism of the cathode. Thus, an HIC combines the high energy density of batteries and the high power density of supercapacitors, thus bridging the gap between batteries and supercapacitors. Two-dimensional (2D) carbon materials (graphite, graphene, carbon nanosheets) are promising candidates for hybrid capacitors owing to their unique physical and chemical properties, including their enormous specific surface areas, abundance of active sites (surface and functional groups), and large interlayer spacing. So far, there has been no review focusing on the 2D carbon-based materials for the emerging post-lithium hybrid capacitors. This concept review considers the role of 2D carbon in hybrid capacitors and the recent progress in the application of 2D carbon materials for post-Li (Na+, K+, Zn2+) hybrid capacitors. Moreover, their challenges and trends in their future development are discussed.
Publisher: American Chemical Society (ACS)
Date: 21-04-2022
DOI: 10.1021/JACS.1C13581
Abstract: BN/CC isosterism has been widely investigated as a strategy to expand carbon-based compounds. The introduction of BN units in organic molecules always results in novel properties. In this work, we reported the first synthesis and characterization of 1,6 ,3-bis-BN cyclohexane, an isostere of cyclohexane with two adjacent BN pairs. Its ring flipping barrier is similar to that of cyclohexane. Protic hydrogens on N in 1,6 ,3-bis-BN cyclohexane show higher reactivity than its isomeric bis-BN cyclohexane. This compound exhibits an appealing hydrogen storage capability of >9.0 wt %, nearly twice as much as the 1,2 ,5-bis-BN cyclohexane.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/B923829H
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3RA22836C
Publisher: Wiley
Date: 06-04-2020
Abstract: Direkt an der Grenze zwischen Metallen und Nichtmetallen angesiedelt, nimmt das Element Bor eine einzigartige Position im Periodensystem ein. Diese besondere Stellung ermöglicht eine enorme Vielfalt an chemischen Reaktionen und Anwendungen. Auch in Hinblick auf die stetig steigende Nachfrage an erneuerbaren und sauberen Energien bzw. energieeffizienten Prozessen ist das Element Bor mehr und mehr in den Fokus der energiebezogenen Forschung gerückt und umfasst mittlerweile Bereiche wie 1) die Aktivierung und Synthese kleiner energiereicher Moleküle, 2) die Speicherung von chemischer und elektrischer Energie und 3) die Umwandlung von elektrischer Energie zu Licht. Diese Anwendungen basieren hierbei auf den besonderen Eigenschaften des Elements Bor, d. h. vor allem auf dessen Elektronenmangel in Verbindung mit der Gegenwart eines unbesetzten p‐Orbitals, was die Ausbildung unzähliger Verbindungen mit gezielt beeinflussbaren chemischen und physikalischen Eigenschaften ermöglicht. So erreicht Bor beispielsweise mit vier kovalenten Bindungen und einer negativen Ladung relativ einfach ein Elektronenoktett, wodurch die Verbindungsklasse der Boratanionen zugänglich wird, welche eine außergewöhnlich hohe chemische und elektrochemische Stabilität aufweisen. Besonders hervorzuheben ist in diesem Zusammenhang die synthetisch wertvolle Klasse der schwach‐koordinierenden Anionen. Dieser Aufsatz soll die Bedeutung von Borverbindungen für energiebezogene Prozesse und Anwendungen verdeutlichen und fasst die Fortschritte der letzten Jahre auf diesem Gebiet zusammen.
Publisher: American Chemical Society (ACS)
Date: 13-07-2016
Abstract: Reduced graphene oxide, an intensively investigated material for Li-ion batteries, has shown mostly unsatisfactory performance in Na-ion batteries, since its d-spacing is believed to be too small for effective insertion/deinsertion of Na(+) ions. Herein, a facile method was developed to produce boron-functionalized reduced graphene oxide (BF-rGO), with an enlarged interlayer spacing and defect-rich structure, which effectively accommodates the sodiation/desodiation and provides more active sites. The Na/BF-rGO half cells exhibit unprecedented long cycling stability, with ∼89.4% capacity retained after 5000 cycles (0.002% capacity decay per cycle) at 1000 mA·g(-1) current density. High specific capacity (280 mAh·g(-1)) and great rate capability were also delivered in the Na/BF-rGO half cells.
Publisher: Informa UK Limited
Date: 06-10-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7TA07034A
Abstract: Mesostructured manganese phosphonate (MnP) with a uniform nanorod morphology has been prepared through an easy surfactant-mediated procedure.
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 04-2023
Publisher: Wiley
Date: 05-07-2023
Abstract: Garnet‐type oxide Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) features superior ionic conductivity and good stability toward lithium (Li) metal, but requires high‐temperature sintering (≈1200 °C) that induces high fabrication cost, poor mechanical processability, and high interface resistance. Here, a novel high‐performance tricomponent composite solid electrolyte (CSE) comprising LLZTO−4LiBH 4 / x Li 3 BN 2 H 8 is reported, which is prepared by ball milling the LLZTO−4LiBH 4 mixture followed by hand milling with Li 3 BN 2 H 8 . Green pellets fabricated by heating the cold‐pressed CSE powders at 120 °C offer ultrafast room‐temperature ionic conductivity (≈1.73 × 10 −3 S cm −1 at 30 °C) and ultrahigh Li‐ion transference number (≈0.9999), which enable the Li|Li symmetrical cells to cycle over 1600 h at 30 °C with only 30 mV of overpotential. Moreover, the Li|CSE|TiS 2 full cells deliver 201 mAh g −1 of capacity with long cyclability. These outstanding performances are due to the low open porosity in the electrolyte pellets as well as the high intrinsic ionic conductivity and easy deformability of Li 3 BN 2 H 8 .
Publisher: American Chemical Society (ACS)
Date: 19-07-2019
Publisher: Elsevier BV
Date: 05-2023
Publisher: American Chemical Society (ACS)
Date: 26-07-2021
Publisher: Springer Science and Business Media LLC
Date: 13-08-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2SC21100A
Publisher: Elsevier BV
Date: 11-2006
Publisher: American Scientific Publishers
Date: 08-2018
Abstract: An efficient and targeted treatment for tumor cells is demonstrated. This targeting is based upon the strong affinity between hydroxyl-functional groups on graphene and acidic tumors. The hydroxylated graphene (GOH) with a unique 2D architecture further improve the targeting capacity of the system via an enhanced permeability and retention (EPR) process. Polyethylene glycol (PEG) was employed for better biocompatibility and the antitumor drug doxorubicin (DOX) was then incorporated. These additions created a biocompatible system with a superior pH-dependent drug release property. Its proficiency was due to its ability to pass through cell membranes via a process of endocytosis and exocytosis. The results from a Transwell co-culture system discovered that the PEG-GOH-DOX system had a large impact on tumor cell viability (less than 10% survived after treatment) and little influence on normal cells (more than 80% survived). An in vitro 3D tumor model study demonstrated that the size of the PEG-GOH-DOX treated tumor was 50% less than that of the pristine DOX treated tumor. In vivo data indicated that the PEG-GOH-DOX system was able to inhibit the size of tumors by a factor of 6.5 when compared to the untreated tumors.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2DT31365K
Abstract: In an effort to broaden the search for high-capacity hydrogen storage materials, three triborane compounds, NaB(3)H(8), NH(3)B(3)H(7), and NH(4)B(3)H(8), were studied. In addition to hydrogen, thermal decomposition also releases volatile boranes, and the relative amounts and species depend on the cations (Na(+), NH(4)(+)) and the Lewis base (NH(3)). Static-s le hydrogen NMR is used to probe molecular motion in the three solids. In each case, the line width decreases from low temperatures to room temperature in accordance with a model of isotropic or nearly isotropic reorientations. Such motions also explain a deep minimum in the relaxation time T(1). Translational diffusion never appears to be rapid on the 10(-5) s time scale of NMR.
Publisher: Elsevier BV
Date: 10-2015
Publisher: Wiley
Date: 26-10-2015
Abstract: Upon flowing hot steam over hexagonal boron nitride (h-BN) bulk powder, efficient exfoliation and hydroxylation of BN occur simultaneously. Through effective hydrogen bonding with water and N-isopropylacrylamide, edge-hydroxylated BN nanosheets dramatically improve the dimensional change and dye release of this temperature-sensitive hydrogel and thereby enhance its efficacy in bionic, soft robotic, and drug-delivery applications.
Publisher: Elsevier BV
Date: 09-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA05008C
Abstract: This review highlights recent research advances in functionalised hexagonal boron nitride for energy conversion and storage applications.
Publisher: Elsevier BV
Date: 10-2023
Publisher: Springer Science and Business Media LLC
Date: 12-07-2018
Publisher: Elsevier BV
Date: 11-2023
Publisher: Informa UK Limited
Date: 05-11-2014
Publisher: Elsevier BV
Date: 03-2015
Publisher: American Chemical Society (ACS)
Date: 04-2015
DOI: 10.1021/CM5044599
Publisher: Elsevier BV
Date: 12-2006
Publisher: Elsevier BV
Date: 06-2004
Publisher: Elsevier BV
Date: 06-2007
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA01158B
Abstract: Guanidinium octahydrotriborate, with a melting point of −10 °C, releases wt% high purity hydrogen below 100 °C.
Publisher: American Chemical Society (ACS)
Date: 14-06-2016
Abstract: Pristine and boron-doped anatase TiO2 were prepared via a facile sol-gel method and the hydrothermal method for application as anode materials in sodium-ion batteries (SIBs). The sol-gel method leads to agglomerated TiO2, whereas the hydrothermal method is conducive to the formation of highly crystalline and discrete nanoparticles. The structure, morphology, and electrochemical properties were studied. The crystal size of TiO2 with boron doping is smaller than that of the nondoped crystals, which indicates that the addition of boron can inhibit the crystal growth. The electrochemical measurements demonstrated that the reversible capacity of the B-doped TiO2 is higher than that for the pristine s le. B-doping also effectively enhances the rate performance. The capacity of the B-doped TiO2 could reach 150 mAh/g at the high current rate of 2C and the capacity decay is only about 8 mAh/g over 400 cycles. The remarkable performance could be attributed to the lattice expansion resulting from B doping and the shortened Li(+) diffusion distance due to the nanosize. These results indicate that B-doped TiO2 can be a good candidate for SIBs.
Publisher: Wiley
Date: 24-09-2204
Abstract: Sodium borohydride (NaBH 4 ) is among the most studied hydrogen storage materials because it is able to deliver high‐purity H 2 at room temperature with controllable kinetics via hydrolysis however, its regeneration from the hydrolytic product has been challenging. Now, a facile method is reported to regenerate NaBH 4 with high yield and low costs. The hydrolytic product NaBO 2 in aqueous solution reacts with CO 2 , forming Na 2 B 4 O 7 ⋅10 H 2 O and Na 2 CO 3 , both of which are ball‐milled with Mg under ambient conditions to form NaBH 4 in high yield (close to 80 %). Compared with previous studies, this approach avoids expensive reducing agents such as MgH 2 , bypasses the energy‐intensive dehydration procedure to remove water from Na 2 B 4 O 7 ⋅10 H 2 O, and does not require high‐pressure H 2 gas, therefore leading to much reduced costs. This method is expected to effectively close the loop of NaBH 4 regeneration and hydrolysis, enabling a wide deployment of NaBH 4 for hydrogen storage.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA05345E
Abstract: A new approach is used to synthesize MoO 2 @C with excellent capacity, rate capability and cycle stability for LIBs.
Publisher: Elsevier BV
Date: 09-2022
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: American Chemical Society (ACS)
Date: 15-03-2011
DOI: 10.1021/IC2000987
Abstract: A metathesis reaction between unsolvated NaB(3)H(8) and NH(4)Cl provides a simple and high-yield synthesis of NH(4)B(3)H(8). Structure determination through X-ray single crystal diffraction analysis reveals weak N-H(δ+)---H(δ-)-B interaction in NH(4)B(3)H(8) and strong N-H(δ+)---H(δ-)-B interaction in NH(4)B(3)H(8)·18-crown-6·THF adduct. Pyrolysis of NH(4)B(3)H(8) leads to the formation of hydrogen gas with appreciable amounts of other volatile boranes below 160 °C. Hydrolysis experiments show that upon addition of catalysts, NH(4)B(3)H(8) releases up to 7.5 materials wt % hydrogen.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9SE01271K
Abstract: Cobalt diselenide (CoSe 2 ), a representative transition-metal chalcogenide (TMC), is attracting intensive interest as an anode material for lithium ion batteries (LIBs), in view of its high specific capacity based on the conversion reaction mechanism.
Publisher: Wiley
Date: 11-01-2023
Abstract: This review focuses on the formation and preparation of defects, the dynamic evolution process of defects, and the influence of defect dynamic evolution on catalytic reactions. The summary of the current advances in the dynamic evolution process of defects in oxygen evolution reaction, hydrogen evolution reaction, nitrogen reduction reaction, oxygen reduction reaction, and carbon dioxide reduction reaction, and the given perspectives are expected to provide a more comprehensive understanding of defective electrocatalysts on the structural evolution process during electrocatalysis and the reaction mechanisms, especially for the defect dynamic evolution on the performance in catalytic reactions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EN00241A
Abstract: This research represents the first study of perfluorooctanoic acid (PFOA) decomposition using immobilized ZnO nanoparticles by electrophoretic deposition in photocatalysis and photoelectrocatalysis.
Publisher: Elsevier BV
Date: 09-2023
Publisher: Wiley
Date: 27-01-2021
Publisher: Springer Science and Business Media LLC
Date: 12-12-2014
Publisher: Wiley
Date: 24-09-2019
Publisher: Informa UK Limited
Date: 06-06-2022
Publisher: Elsevier BV
Date: 2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8NA00228B
Abstract: A novel structure of double carbon coated tentacle-like ZnO composite has been synthesized, which delivers remarkable Li + storage properties.
Publisher: Wiley
Date: 26-04-2016
Abstract: Ammonium aminodiboranate ([NH4 ][BH3 NH2 BH3 ]) is a long-sought isomer of diammoniate of diborane ([NH3 BH2 NH3 ][BH4 ]) and ammonia borane (NH3 BH3 ) dimer. Our results show that [NH4 ][BH3 NH2 BH3 ] is stable in tetrahydrofuran at -18 °C and decomposes rapidly to NH3 BH2 NH2 BH3 and H2 at elevated temperatures. The decomposition pathway is dictated by the dihydrogen bonding between H(δ+) on NH4 (+) and H(δ-) on BH3 , as confirmed by theoretical calculations. This is in contrast to the interconversion between [NH3 BH2 NH3 ][BH4 ] and (NH3 BH3 )2 , although all three have dihydrogen bonds and the same stoichiometry.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2CC04504D
Abstract: Phenylphosphonic acid (PPOA) has been proposed as a new additive for carbonate electrolytes, in which the complexation reaction between PPOA and Li
Publisher: Elsevier BV
Date: 04-2023
Publisher: Springer Science and Business Media LLC
Date: 06-2007
Publisher: American Chemical Society (ACS)
Date: 28-01-2011
DOI: 10.1021/JP110762S
Publisher: Informa UK Limited
Date: 03-07-2023
Publisher: American Chemical Society (ACS)
Date: 11-02-2020
Publisher: Wiley
Date: 05-01-2022
Abstract: The catalytic activity of oxygen functionalized hexagonal boron nitride (h‐BN) with B−O−O−B and B−O−B active sites at the zigzag edges for oxidative dehydrogenation (ODH) of light alkanes, specifically ethane (C 2 H 6 ), propane (C 3 H 8 ), butane (C 4 H 10 ), and isobutane (HC(CH 3 ) 3 ) is explored. It has been found that the reaction pathway involves two H atom transfer steps with small activation energies. We demonstrate that the synergy of two active sites, B−O−O−B and B−O−B , is crucial for the first and second H‐transfer, respectively. With the increase in molecular mass of the considered light alkanes, the ODH reaction temperature decreases. In the case of butane and isobutane, the ODH reaction occurs almost at the same temperature indicating that the reaction is independent of the shape of the isomer. The rate‐limiting nature of the first H‐transfer step is predicted. The charge redistribution during H‐transfers and localized oxygen atomic states in the conduction band are explored to suggest possible descriptors for the rational design of new catalysts. The universal action of the B−O−O−B and B−O−B active sites for ODH of the light alkanes paves the way for metal‐free BN‐based materials for future catalytic applications.
Publisher: Elsevier BV
Date: 03-2023
Publisher: Elsevier BV
Date: 2016
Publisher: Elsevier BV
Date: 12-2015
Publisher: International Union of Crystallography (IUCr)
Date: 28-04-2010
Publisher: American Chemical Society (ACS)
Date: 15-11-2018
Abstract: Improving the structural stability and the electron/ion diffusion rate across whole electrode particles is crucial for transition metal oxides as next-generation anodic materials in lithium-ion batteries. Herein, we report a novel structure of double carbon-coated Co
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End Date: 10-2024
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