ORCID Profile
0000-0002-9025-4236
Current Organisations
CSIRO
,
Monash University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
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.
Electrochemistry | Analytical Chemistry | Catalytic Process Engineering | Catalysis and Mechanisms of Reactions | Physical Chemistry of Materials | Separation Science | Synthesis of Materials | Photodetectors, Optical Sensors and Solar Cells | Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels) | Causes and Prevention of Crime | Physical Chemistry (Incl. Structural) | Chemical Engineering | Nanomaterials | Forensic Chemistry | Functional Materials | Nanotechnology | Materials Engineering | Composite and Hybrid Materials
Hydrogen Production from Renewable Energy | Expanding Knowledge in the Chemical Sciences | Expanding Knowledge in Engineering | Emerging Defence Technologies | Chemical Fertilisers | National Security | Hydrogen Storage | Hydrogen Distribution | Energy Storage (excl. Hydrogen) | Solar-Photovoltaic Energy | Industrial Chemicals and Related Products not elsewhere classified |
Publisher: Elsevier BV
Date: 11-2018
Publisher: Elsevier BV
Date: 05-2020
Publisher: Springer Science and Business Media LLC
Date: 23-01-2014
DOI: 10.1038/NCHEM.1846
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3EY00046J
Abstract: Modification of the manganese–antimony oxide nanocomposites with lead produces an active and highly robust electrocatalyst for anodes of hydrogen-generating water electrolysers with proton conducting electrolytes.
Publisher: Elsevier BV
Date: 12-2015
Publisher: Wiley
Date: 05-11-2021
Abstract: While perovskite solar cell (PSC) efficiencies are soaring at a laboratory scale, these are most commonly achieved with evaporated gold electrodes, which would present a significant expense in large‐scale production. This can be remedied through the use of significantly cheaper carbon electrodes that, in contrast to metals, also do not migrate through the device. To this end, the present work investigates simple‐to‐prepare aluminum‐supported carbon electrodes derived from commercially available, inexpensive materials that can be applied onto various hole‐transporting materials and enable photovoltaic performances on par with those provided by gold electrodes. Successful integration of the new carbon‐based electrode into flexible devices produced by a roll‐to‐roll printing technology by both pressing and lamination is demonstrated. However, temperature cycling durability tests reveal that the use of carbon electrodes based on commercial pastes is hindered by incompatibility of adhesive additives with the key components of the PSCs under heating. Resolving this issue, tailor‐made graphite electrodes devoid of damaging additives are introduced, which improve the PSC stability under temperature cycling test protocol to the level provided by benchmark gold electrodes. The study highlights current challenges in developing laminated carbon electrodes in PSCs and proposes strategies toward the resolution thereof.
Publisher: Wiley
Date: 31-05-2016
Publisher: Elsevier BV
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 25-10-2019
Publisher: American Chemical Society (ACS)
Date: 21-08-2017
Publisher: Wiley
Date: 30-11-2015
Abstract: We report that films screen printed from nickel oxide (NiO) nanoparticles and microballs are efficient electrocatalysts for water oxidation under near-neutral and alkaline conditions. Investigations of the composition and structure of the screen-printed films by X-ray diffraction, X-ray absorption spectroscopy, and scanning electron microscopy confirmed that the material was present as the cubic NiO phase. Comparison of the catalytic activity of the microball films to that of films fabricated by using NiO nanoparticles, under similar experimental conditions, revealed that the microball films outperform nanoparticle films of similar thickness owing to a more porous structure and higher surface area. A thinner, less-resistive NiO nanoparticle film, however, was found to have higher activity per Ni atom. Anodization in borate buffer significantly improved the activity of all three films. X-ray photoelectron spectroscopy showed that during anodization, a mixed nickel oxyhydroxide phase formed on the surface of all films, which could account for the improved activity. Impedance spectroscopy revealed that surface traps contribute significantly to the resistance of the NiO films. On anodization, the trap state resistance of all films was reduced, which led to significant improvements in activity. In 1.00 m NaOH, both the microball and nanoparticle films exhibit high long-term stability and produce a stable current density of approximately 30 mA cm(-2) at 600 mV overpotential.
Publisher: Springer Science and Business Media LLC
Date: 19-08-2019
Publisher: Wiley
Date: 28-08-2017
Abstract: Influence of the conditions for aerobic oxidation of Mn2+(aq) catalysed by the MnxEFG protein complex on the morphology, structure and reactivity of the resulting biogenic manganese oxides (MnO
Publisher: Elsevier BV
Date: 05-2015
Publisher: Wiley
Date: 06-02-2019
Abstract: Manganese oxide (MnO
Publisher: Wiley
Date: 14-12-2018
Publisher: American Chemical Society (ACS)
Date: 06-06-2023
Publisher: American Chemical Society (ACS)
Date: 09-02-2022
Publisher: American Chemical Society (ACS)
Date: 19-05-2022
Publisher: AIP Publishing
Date: 07-03-2016
DOI: 10.1063/1.4942976
Abstract: Beyond conventional electrically-driven neuronal stimulation methods, there is a growing interest in optically-driven approaches. In recent years, nitrogen-doped ultrananocrystalline diamond (N-UNCD) has emerged as a strong material candidate for use in electrically-driven stimulation electrodes. This work investigates the electrochemical activity of N-UNCD in response to pulsed illumination, to assess its potential for use as an optically-driven stimulation electrode. Whilst N-UNCD in the as-grown state exhibits a weak photoresponse, the oxygen plasma treated film exhibits two orders of magnitude enhancement in its sub-bandgap open circuit photovoltage response. The enhancement is attributed to the formation of a dense network of oxygen-terminated diamond nanocrystals at the N-UNCD surface. Electrically connected to the N-UNCD bulk via sub-surface graphitic grain boundaries, these diamond nanocrystals introduce a semiconducting barrier between the sub-surface graphitic semimetal and the electrolyte solution, leading to a photovoltage under irradiation with wavelengths of λ = 450 nm and shorter. Within the safe optical exposure limit of 2 mW mm−2, charge injection capacity of 0.01 mC cm−2 is achieved using a 15 × 15 μm electrode, meeting the requirements for extracellular and intercellular stimulation. The nanoscale nature of processes presented here along with the diamond's biocompatibility and biostability open an avenue for the use of oxygen treated N-UNCD as optically driven stimulating electrodes.
Publisher: SAE International
Date: 24-10-2016
DOI: 10.4271/2016-01-9076
Publisher: Springer Science and Business Media LLC
Date: 13-05-2019
Publisher: Elsevier BV
Date: 06-2017
Publisher: Wiley
Date: 14-06-2018
Publisher: Elsevier BV
Date: 11-2018
Publisher: Wiley
Date: 06-02-2019
Publisher: American Chemical Society (ACS)
Date: 21-07-2019
DOI: 10.1021/ACS.JPCLETT.9B01783
Abstract: Chemical doping is a ubiquitously applied strategy to improve the charge-transfer and conductivity characteristics of spiro-OMeTAD, a hole-transporting material (HTM) used widely in solution-processed perovskite solar cells (PSCs). Cobalt(III) complexes are commonly employed HTM dopants, whose major role is to oxidize spiro-OMeTAD to provide
Publisher: Wiley
Date: 15-06-2021
Abstract: The instability and expense of anodes for water electrolyzers with acidic electrolytes can be overcome through the implementation of a cobalt‐iron‐lead oxide electrocatalyst, [Co–Fe–Pb]O x , that is self‐healing in the presence of dissolved metal precursors. However, the latter requirement is pernicious for the membrane and especially the cathode half‐reaction since Pb 2+ and Fe 3+ precursors poison the state‐of‐the‐art platinum H 2 evolving catalyst. To address this, we demonstrate the invariably stable operation of [Co–Fe–Pb]O x in acidic solutions through a cobalt‐selective self‐healing mechanism without the addition of Pb 2+ and Fe 3+ and investigate the kinetics of the process. Soft X‐ray absorption spectroscopy reveals that low concentrations of Co 2+ in the solution stabilize the catalytically active Co(Fe) sites. The highly promising performance of this system is showcased by steady water electrooxidation at 80±1 °C and 10 mA cm −2 , using a flat electrode, at an overpotential of 0.56±0.01 V on a one‐week timescale.
Publisher: Springer Science and Business Media LLC
Date: 08-04-2022
DOI: 10.1007/S00216-022-04027-1
Abstract: Sarin is a highly toxic nerve agent classified by the Chemical Weapon Convention as a Schedule 1 chemical with no use other than to kill or injure. Moreover, in recent times, chemical warfare agents have been deployed against both military and civilian populations. Chemical warfare agents always contain minor impurities that can provide important chemical attribution signatures (CAS) that can aid in forensic investigations. In order to understand the trace molecular composition of sarin, various analytical approaches including GC-MS, LC-MS and NMR were used to determine the chemical markers of a set of sarin s les. Precursor materials were studied and the full characterisation of a synthetic process was undertaken in order to provide new insights into potential chemical attribution signatures for this agent. Several compounds that were identified in the precursor were also found in the sarin s les linking it to its method of preparation. The identification of these CAS contributes critical information about a synthetic route to sarin, and has potential for translation to related nerve agents.
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 05-2023
Publisher: Wiley
Date: 23-05-2017
Publisher: Wiley
Date: 24-04-2019
Publisher: AIP Publishing
Date: 12-2019
DOI: 10.1063/1.5127275
Abstract: Perovskite solar cells (PSCs) with a novel hybrid electrode structure, in which a single device can operate with either a vertical (sandwich) or lateral (back-contact) configuration of contacts, are demonstrated in this work. The hybrid structure was achieved by depositing an additional anode on top of a prefabricated back-contact PSC device, giving a final device with three electrodes—one shared cathode and two anodes. Device performances are tested and evaluated for both operation modes, and a semianalytical model along with coupled optoelectronic simulations is used to rationalize the experimental results. It is determined that due to the intrinsically narrow depletion region near the contact interfaces, the charge collection efficiency in the back-contact device structure appears to be significantly lower compared to the sandwich device structure. This finding provides an insight into the cause of the performance disparity between these two architectures.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8EE00754C
Abstract: A facile method to produce metal halide perovskite solar cells with improved stability and efficiency.
Publisher: Wiley
Date: 19-06-2018
Abstract: Invited for this month's cover are the groups of Prof. Dr. Udo Bach, Prof. Dr. Yi-Bing Cheng, and Prof. Dr. Leone Spiccia (Monash University, Australia), and Dr. Mingkui Wang (Huazhong University of Science and Technology, China). The cover picture shows the charge-transfer processes between a novel porphyrin dye adsorbed on nickel oxide and tris(acetylacetonato) iron(III/II) redox mediator after excitation by sunlight. Read the full text of the article at 10.1002/cplu.201800104.
Publisher: American Chemical Society (ACS)
Date: 15-07-2022
Publisher: Wiley
Date: 02-05-2017
Abstract: Design of novel efficient light-harvesters for p-type dye-sensitised solar cells (DSSCs) is indispensable for further advances in this photovoltaic technology. Herein, a novel D-π-A (D=donor, π=π-conjugated linker, A=acceptor) sensitiser, ZnP1, featuring an electron acceptor, perylenemonoimide (PMI), connected to an electron donor, di(p-carboxyphenyl)amine (DCPA), through fluorene and a zinc(II) porphyrin with alkyl chains as a π-conjugated bridge is introduced. Spectroscopic and electrochemical characterisation of this dye along with a newly synthesised PMI-free reference dye ZnP0 has been undertaken to demonstrate strong electron coupling between the DCPA donor and PMI acceptor subunits through the porphyrin ring in ZnP1, which redshifts the light absorption onset to the near-IR region. When integrated into p-DSSCs based on a mesoporous nickel(II) oxide semiconductor electrode and a tris(acetylacetonato) iron(III/II) redox mediator, ZnP1 exhibits an onset of the incident photon-to-current conversion efficiency at 800 nm and a power conversion efficiency of up to 0.92 % under simulated 100 mW cm
Publisher: American Chemical Society (ACS)
Date: 11-10-2202
Publisher: Wiley
Date: 15-06-2021
Abstract: The instability and expense of anodes for water electrolyzers with acidic electrolytes can be overcome through the implementation of a cobalt‐iron‐lead oxide electrocatalyst, [Co–Fe–Pb]O x , that is self‐healing in the presence of dissolved metal precursors. However, the latter requirement is pernicious for the membrane and especially the cathode half‐reaction since Pb 2+ and Fe 3+ precursors poison the state‐of‐the‐art platinum H 2 evolving catalyst. To address this, we demonstrate the invariably stable operation of [Co–Fe–Pb]O x in acidic solutions through a cobalt‐selective self‐healing mechanism without the addition of Pb 2+ and Fe 3+ and investigate the kinetics of the process. Soft X‐ray absorption spectroscopy reveals that low concentrations of Co 2+ in the solution stabilize the catalytically active Co(Fe) sites. The highly promising performance of this system is showcased by steady water electrooxidation at 80±1 °C and 10 mA cm −2 , using a flat electrode, at an overpotential of 0.56±0.01 V on a one‐week timescale.
Publisher: American Chemical Society (ACS)
Date: 20-04-2017
Publisher: American Chemical Society (ACS)
Date: 15-02-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA07293E
Abstract: Stability of the anode catalysts for PEM water electrolysers can be substantially improved by combining the catalytic component with antimony oxides. However, the mechanisms of the catalyst stabilisation differ depending on the active element used.
Publisher: Wiley
Date: 17-07-2022
Abstract: The search for lead‐free alternatives to lead‐halide perovskite photovoltaic materials resulted in the discovery of copper(I)‐silver(I)‐bismuth(III) halides exhibiting promising properties for optoelectronic applications. The present work demonstrates a solution‐based synthesis of uniform Cu x AgBiI 4+ x thin films and scrutinizes the effects of x on the phase composition, dimensionality, optoelectronic properties, and photovoltaic performance. Formation of pure 3D CuAgBiI 5 at x = 1, 2D Cu 2 AgBiI 6 at x = 2, and a mix of the two at 1 x 2 is demonstrated. Despite lower structural dimensionality, Cu 2 AgBiI 6 has broader optical absorption with a direct bandgap of 1.89 ± 0.05 eV, a valence band level at ‐5.25 eV, improved carrier lifetime, and higher recombination resistance as compared to CuAgBiI 5 . These differences are mirrored in the power conversion efficiencies of the CuAgBiI 5 and Cu 2 AgBiI 6 solar cells under 1 sun of 1.01 ± 0.06% and 2.39 ± 0.05%, respectively. The latter value is the highest reported for this class of materials owing to the favorable film morphology provided by the hot‐casting method. Future performance improvements might emerge from the optimization of the Cu 2 AgBiI 6 layer thickness to match the carrier diffusion length of ≈40–50 nm. Nonencapsulated Cu 2 AgBiI 6 solar cells display storage stability over 240 days.
Publisher: American Chemical Society (ACS)
Date: 20-08-2018
Publisher: Wiley
Date: 26-04-2022
Abstract: Aiming to design a catalyst for stable electrooxidation of water at low pH, the present work explores the properties and structural features of electrodeposited composite oxides based on Bi and Co, which were anticipated to provide stability and catalytical activity, respectively. Materials deposited as very thin ( ca 50 nm) films on F‐doped SnO 2 (FTO) substrate do not initially exhibit high activity in 0.1 M H 2 SO 4 , but are activated during operation through the electrooxidatively‐induced enrichment of the catalytic surface with Co and Sn oxides. The latter originate from the FTO support and are identified as an important component of the catalyst through control experiments with a Sn‐free substrate and with Sn 2+ intentionally added at the electrodeposition stage. A distinctive feature of the Co−Bi−Sn‐based electrocatalyst is the slow but persistent improvement in the activity during operation in 0.1 M H 2 SO 4 at both ambient and elevated (60 °C) temperatures, which contrasts with the continuously degrading behaviour of state‐of‐the‐art oxygen evolution catalysts at low pH. This is demonstrated by 9‐day‐long galvanostatic tests at 10 mA cm −2 , during which the Co−Bi−Sn‐based thin film catalyst shows no degradation and sustains stable water oxidation at ca 1.9 V vs . reversible hydrogen electrode. The effects of tin leaching from the support detected herein might have implications to other acidic water oxidation catalysts supported on high‐surface area doped SnO 2 materials.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/C9TA10422D
Abstract: Light harvesting capacity of caesium silver bismuth bromide double perovskite need to be enhanced to render this non-toxic and thermodynamically stable material suitable for photovoltaic applications, for ex le as a top layer in tandem solar cells.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SE00129D
Abstract: A rapid low-temperature microwave-assisted synthesis of nickel(iron) layered hydroxides and sulphides that exhibit robust catalytic activity for electrooxidation of alkaline water is introduced.
Publisher: Wiley
Date: 07-06-2016
Abstract: Measurement of contamination of marine and naval diesel fuels (arising from product mixing or adulteration) with biodiesel or fatty acid methyl esters can be problematic, especially at very low levels. A suitable solution for this task for trace amounts of in idual fatty acid methyl esters with resolution and quantification can be achieved by using a multidimensional gas chromatographic approach with electron and chemical ionization mass spectrometric detection. A unique column set comprising a 100 m methyl-siloxane nonpolar first dimension column and high-temperature ionic liquid column in the second dimension enabled identification of in idual fatty acid methyl esters at below the lowest concentrations required to be reported in a diesel fuel matrix. Detection limits for in idual fatty acid methyl esters compounds ranged from 0.5 to 5.0 mg/L, with excellent linearity up to 5000 mg/L and repeatability of the method from 1.3 to 3.2%. The method was applied to the analysis of diesel fuel s les with suspected biodiesel contamination. Contamination at 568 mg/L was calculated for an unknown s le and interpretation of the results permitted the determination of a likely source of the contamination.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C7EE02716H
Abstract: High faradaic efficiency reduction of N 2 to NH 3 is achieved in ionic liquid media under ambient conditions.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C7TC05711C
Abstract: Spray-deposited AgBiS 2 films are introduced as light-harvesters in planar solar cells that demonstrate up to 18 mA cm −2 short-circuit current density under 1 sun irradiation.
Location: Australia
Start Date: 06-2021
End Date: 06-2026
Amount: $4,920,490.00
Funder: Australian Research Council
View Funded ActivityStart Date: 11-2021
End Date: 06-2024
Amount: $368,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2021
End Date: 07-2023
Amount: $269,020.00
Funder: Australian Research Council
View Funded ActivityStart Date: 06-2019
End Date: 06-2020
Amount: $376,358.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2020
End Date: 04-2024
Amount: $450,000.00
Funder: Australian Research Council
View Funded Activity