ORCID Profile
0000-0002-8480-5994
Current Organisation
The University of Newcastle
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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.
Composite and Hybrid Materials | Catalytic Process Engineering | Functional Materials | Materials Engineering
Hydrogen Production from Renewable Energy | Renewable Energy not elsewhere classified |
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1MA00934F
Abstract: The photoactivity of rhombic dodecahedral Cu 2 O with dominant {110} facets is superior to that of cubic Cu 2 O with {100} surfaces partly owing to the improved charge separation and carrier mobility.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA01180K
Abstract: A comprehensive survey on preparation methods of powdered or thin-film Bi-based photocatalysts is provided, comparing he erse approaches and their advantages and limitations in the context of photocatalytic and photoelectrochemical applications.
Publisher: Wiley
Date: 25-06-2021
Abstract: Copper‐based chalcogenides have been considered as potential photocathode materials for photoelectrochemical (PEC) CO 2 reduction due to their excellent photovoltaic performance and favorable conduction band alignment with the CO 2 reduction potential. However, they suffer from low PEC efficiency due to the sluggish charge transfer kinetics and poor selectivity, resulting from random CO 2 reduction reaction pathways. Herein, a facile heat treatment (HT) of a Cu 2 ZnSnS 4 (CZTS)/CdS photocathode is demonstrated to enable significant improvement in the photocurrent density (−0.75 mA cm −2 at −0.6 V vs RHE), tripling that of pristine CZTS, as a result of the enhanced charge transfer and promoted band alignment originating from the elemental inter‐diffusion at the CZTS/CdS interface. In addition, rationally regulated CO 2 reduction selectivity toward CO or alcohols can be obtained by tailoring the surficial sulfur vacancies by HT in different atmospheres (air and nitrogen). Sulfur vacancies replenished by O‐doping is shown to favor CO adsorption and the CC coupling pathway, and thereby produce methanol and ethanol, whilst the CdS surface with more S vacancies promotes CO desorption capability with higher selectivity toward CO. The strategy in this work rationalizes the interface charge transfer optimization and surface vacancy engineering simultaneously, providing a new insight into PEC CO 2 reduction photocathode design.
Publisher: American Chemical Society (ACS)
Date: 15-10-2021
Publisher: Elsevier BV
Date: 09-2019
Publisher: Wiley
Date: 11-06-2022
Abstract: Ammonia is a key chemical feedstock for industry as well as future carbon‐free fuel and transportable vector for renewable energy. Photoelectrochemical (PEC) ammonia synthesis from NO x reduction reaction (NO x RR) provides not only a promising alternative to the energy‐intensive Haber–Bosch process through direct solar‐to‐ammonia conversion, but a sustainable solution for balancing the global nitrogen cycle by restoring ammonia from wastewater. In this work, selective ammonia synthesis from PEC NO x RR by a kesterite (Cu 2 ZnSnS 4 [CZTS]) photocathode through loading defect‐engineered TiO x cocatalyst on a CdS/CZTS photocathode (TiO x /CdS/CZTS) is demonstrated. The uniquely designed photocathode enables selective ammonia production from NO x RR, yielding up to 89.1% Faradaic efficiency (FE) (0.1 V vs reversible hydrogen electrode (RHE)) with a remarkable positive onset potential (0.38 V vs RHE). By tailoring the amount of surface defective Ti 3+ species, the adsorption of reactant NO 3 − and * NO 2 intermediate is significantly promoted while the full coverage of TiO x also suppresses NO 2 − liberation as a by‐product, contributing to high ammonia selectivity. Further attempts on PEC ammonia synthesis from simulated wastewater show good FE of 64.9%, unveiling the potential of using the kesterite‐based photocathode for sustainably restoring ammonia from nitrate‐rich wastewater.
Publisher: American Chemical Society (ACS)
Date: 14-01-2020
Abstract: Metal and metal-oxide particles are commonly photodeposited on photocatalysts by reduction and oxidation reactions, respectively, consuming charges that are generated under illumination. This study reveals that amorphous MoO
Publisher: American Chemical Society (ACS)
Date: 13-04-2018
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CS00025F
Abstract: This review covers the sustainable development of advanced improvements in CO 2 capture and utilization.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0EE02550J
Abstract: This work demonstrates that the layer structured Magnèli titanium oxides possess co-existing functionalities, which can be applied to both energy harvesting and water treatment using one material.
Publisher: Elsevier BV
Date: 06-2020
Publisher: American Chemical Society (ACS)
Date: 07-10-2020
Publisher: Springer Science and Business Media LLC
Date: 07-08-2022
DOI: 10.1007/S43630-022-00282-4
Abstract: Photoreforming has been shown to accelerate the H 2 evolution rate compared to water splitting due to thermodynamically favorable organic oxidation. In addition, the potential to simultaneously produce solar fuel and value-added chemicals is a significant benefit of photoreforming. To achieve an efficient and economically viable photoreforming process, the selection and design of an appropriate photocatalyst is essential. Carbon nitride is promising as a metal-free photocatalyst with visible light activity, high stability, and low fabrication cost. However, it typically exhibits poor photogenerated charge carrier dynamics, thereby resulting in low photocatalytic performance. Herein, we demonstrate improved carrier dynamics in urea-functionalized carbon nitride with in situ photodeposited Ni cocatalyst (Ni/Urea-CN) for ethanol photoreforming. In the presence of 1 mM Ni 2+ precursor, an H 2 evolution rate of 760.5 µmol h −1 g −1 and an acetaldehyde production rate of 888.2 µmol h −1 g −1 were obtained for Ni/Urea-CN. The enhanced activity is ascribed to the significantly improved carrier dynamics in Urea-CN. The ability of oxygen moieties in the urea group to attract electrons and to increase the hole mobility via a positive shift in the valence band promotes an improvement in the overall carrier dynamics. In addition, high crystallinity and specific surface area of the Urea-CN contributed to accelerating charge separation and transfer. As a result, the electrons were efficiently transferred from Urea-CN to the Ni cocatalyst for H 2 evolution while the holes were consumed during ethanol oxidation. The work demonstrates a means by which carrier dynamics can be tuned by engineering carbon nitride via edge functionalization. Graphical abstract
Publisher: American Chemical Society (ACS)
Date: 22-04-2022
Publisher: American Chemical Society (ACS)
Date: 02-04-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA05407D
Abstract: This review paper focuses on assessing recent publications that used metal sulfide photoelectrodes for PEC applications, with the aim of evaluating the vital parameters required for the design of metal sulfide photocathodes and photoanodes.
Publisher: American Chemical Society (ACS)
Date: 17-01-2019
Publisher: American Chemical Society (ACS)
Date: 02-02-2023
Publisher: American Chemical Society (ACS)
Date: 13-01-2023
Publisher: American Chemical Society (ACS)
Date: 07-04-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA10665J
Abstract: A ZnO photocatalyst decorated with platinum nanoparticles and a thin, uniform layer of phenol-derived polymer demonstrated enhanced transportation of photogenerated charge.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D0EE03116J
Abstract: This review appraises recent literature and provides guidelines for the rational design of photocatalytic system for selective photoreforming reaction.
Publisher: Wiley
Date: 11-09-2018
Abstract: Cuprous Oxide (Cu
Publisher: MDPI AG
Date: 08-04-2020
Abstract: Herein, we demonstrate a method used to tune the selectivity of LaNiO3 (LNO) perovskite catalysts through the substitution of La with K cations. LNO perovskites were synthesised using a simple sol-gel method, which exhibited 100% selectivity towards the methanation of CO2 at all temperatures investigated. La cations were partially replaced by K cations to varying degrees via control of precursor metal concentration during synthesis. It was demonstrated that the reaction selectivity between CO2 methanation and the reverse water gas shift (rWGS) could be tuned depending on the initial amount of K substituted. Tuning the selectivity (i.e., ratio of CH4 and CO products) between these reactions has been shown to be beneficial for downstream hydrocarbon reforming, while valorizing waste CO2. Spectroscopic and temperature-controlled desorption characterizations show that K incorporation on the catalyst surface decrease the stability of C-based intermediates, promoting the desorption of CO formed via the rWGS prior to methanation.
Publisher: Wiley
Date: 09-12-2020
Abstract: Photocatalytic and photoelectrochemical processes are two key systems in harvesting sunlight for energy and environmental applications. As both systems are employing photoactive semiconductors as the major active component, strategies have been formulated to improve the properties of the semiconductors for better performances. However, requirements to yield excellent performances are different in these two distinctive systems. Although there are universal strategies applicable to improve the performance of photoactive semiconductors, similarities and differences exist when the semiconductors are to be used differently. Here, considerations on selected typical factors governing the performances in photocatalytic and photoelectrochemical systems, even though the same type of semiconductor is used, are provided. Understanding of the underlying mechanisms in relation to their photoactivities is of fundamental importance for rational design of high-performing photoactive materials, which may serve as a general guideline for the fabrication of good photocatalysts or photoelectrodes toward sustainable solar fuel generation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA03744K
Abstract: Hierarchically porous N-doped carbon nanofibers anchored with low-loaded FeCo sites (FeCo@PCNFs) were fabricated via the facile electrospinning method followed by carbonization, showing excellent performance for the ORR and primary zinc–air battery.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA00629G
Abstract: An ultrathin amorphous ZnO layer is introduced on Cu 2 O by pulsed electrodeposition, which helps stabilise the Cu 2 O photocathode for water splitting.
Publisher: Elsevier BV
Date: 09-2023
Publisher: American Chemical Society (ACS)
Date: 08-03-2016
Abstract: Ambient fine particulate matter (PM) affects both human health and climate. To reduce the PM2.5 (mass of particles below 2.5 μm in diameter) concentration of an in idual's living environment, ionic liquid-modified polyacrylonitrile (PAN) nanofibers with superior PM2.5 capture capacity were prepared by electrospinning. Ionic liquid diethylammonium dihydrogen phosphate (DEAP) with high viscosity and hydrophilicity was involved during the electrospinning process. Observations by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and water contact angle measurement suggested that the modification of DEAP on PAN effectively altered the morphology (roughness) and surface properties (hydrophilicity) of the PAN nanofibers. The PM2.5 capture measurement was performed in a closed and static system, which mimicked the static hazy weather without wind flow. As a result, DEAP-modified PAN nanofibers exhibited significantly enhanced PM2.5 capture capacity compared to that of the bare PAN nanofibers. This can be attributed to the improved surface roughness (i.e., improved adsorption sites), hydrophilicity, and dipole moment of PAN upon DEAP modification.
Publisher: Wiley
Date: 24-08-2018
Abstract: Pulsed electrodeposition has been introduced to deposit ultrathin flakes of Co
Start Date: 02-2021
End Date: 01-2025
Amount: $521,318.00
Funder: Australian Research Council
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