ORCID Profile
0000-0001-8964-9452
Current Organisation
University of South Australia
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Nanoscale characterisation | Materials engineering | Nanofabrication growth and self assembly | Functional materials
Publisher: Elsevier BV
Date: 05-2022
Publisher: Elsevier BV
Date: 08-2022
Publisher: Wiley
Date: 11-10-2011
Publisher: Wiley
Date: 22-05-2017
Publisher: Wiley
Date: 13-04-2012
Abstract: Pt-Co alloy nanoparticle networks (NNs) with adjustable composition are synthesized by co-reduction of H(2) PtCl(6) and CoCl(2) with NaBH(4) in an ethylene glycol assisted cetyltrimethylammonium bromide/water/chloroform system at room temperature. Electrochemical measurements indicate that the as-prepared spongelike Pt-Co NNs exhibit composition-dependent electrocatalytic activities and CO tolerance with better durability toward methanol and formic acid oxidation than commercially available Pt/C catalyst. In particular, Pt(3) Co NNs show the highest specific activity, while Pt(2) Co NNs exhibit optimal mass activity among Pt-Co alloy NNs with different composition. These Pt-Co alloy NNs may be promising supportless anode catalysts for the direct methanol and direct formic acid fuel cells.
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2019
Publisher: IOP Publishing
Date: 08-2018
Publisher: Elsevier BV
Date: 12-2021
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2019
Publisher: SPIE
Date: 23-04-2017
DOI: 10.1117/12.2263428
Publisher: American Chemical Society (ACS)
Date: 09-03-2020
Publisher: Wiley
Date: 08-02-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TA03280G
Abstract: Inspired by a kerosene oil l , a highly efficient solar-evaporation system with the evaporation surface located above the bulk water surface is realized.
Publisher: Wiley
Date: 14-03-2023
Abstract: Improving interfacial solar evaporation performance is crucial for the practical application of this technology in solar‐driven seawater desalination. Lowering evaporation enthalpy is one of the most promising and effective strategies to significantly improve solar evaporation rate. In this study, a new pathway to lower vaporization enthalpy by introducing heterogeneous interactions between hydrophilic hybrid materials and water molecules is developed. 2D MoN 1.2 nanosheets are synthesized and integrated with rGO nanosheets to form stacked MoN 1.2 ‐rGO heterostructures with massive junction interfaces for interfacial solar evaporation. Molecular dynamics simulation confirms that atomic thick 2D MoN 1.2 and rGO in the MoN 1.2 ‐rGO heterostructures simultaneously interact with water molecules, while the interactions are remarkably different. These heterogeneous interactions cause an imbalanced water state, which easily breaks the hydrogen bonds between water molecules, leading to dramatically lowered vaporization enthalpy and improved solar evaporation rate (2.6 kg m −2 h −1 ). This study provides a promising strategy for designing 2D‐2D heterostructures to regulate evaporation enthalpy to improve solar evaporate rate for clean water production.
Publisher: Wiley
Date: 14-02-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5NR02329G
Abstract: 3D hierarchical nanosheet-based ZnSe microspheres with improved photocatalytic performance were synthesized via a facile chemical conversion strategy of 2D inorganic–organic hybrid ZnSe–DETA nanosheets.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C8SE00538A
Abstract: Highly efficient nanocatalysts which can selectively decompose hydrous hydrazine for hydrogen production are introduced.
Publisher: Elsevier BV
Date: 10-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2TA03004G
Abstract: An affordable and easy-to-fabricate solar evaporation-based crystallizer (SEC) was developed to implement interfacial brine evaporation towards zero liquid discharge (ZLD).
Publisher: American Chemical Society (ACS)
Date: 06-06-2016
Publisher: Tsinghua University Press
Date: 06-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA08539A
Abstract: An interfacial gelation coating method is developed to selectively coat photothermal materials on 3D substrate surfaces which dramatically reduces the consumption of photothermal materials while delivering superior performance in solar evaporation.
Publisher: Springer Science and Business Media LLC
Date: 31-01-2017
DOI: 10.1038/SREP41895
Abstract: We present a new type of fiber-coupled photodetector with a thermal-based optical sensor head, which enables it to operate even in the presence of strong electro-magnetic interference and in electrically sensitive environments. The optical sensor head consists of three cascaded Fabry-Perot interferometers. The end-face surface is coated with copper-oxide micro-particles embedded in hydrogel, which is a new photo-thermal coating that can be readily coated on many different surfaces. Under irradiation, photons are absorbed by the photo-thermal coating, and are converted into heat, changing the optical path length of the probing light and induces a resonant wavelength shift. For white-light irradiation, the photodetector exhibits a power sensitivity of 760 pm/mW, a power detection limit of 16.4 μW (i.e. specific detectivity of 2.2 × 10 5 cm.√Hz/W), and an optical damage threshold of ~100 mW or ~800 mW/cm 2 . The response and recovery times are 3.0 s (~90% of change within 100 ms) and 16.0 s respectively.
Publisher: Elsevier BV
Date: 08-2020
Publisher: Wiley
Date: 11-03-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0TA03799K
Abstract: Ni 1 Co 3 @PDA nanosheets were utilized as photothermal materials in a kerosene l -like evaporator for solar steam generation. A high evaporation rate of 2.42 kg m −2 h −1 with a corresponding energy efficiency beyond the theoretical limit was achieved.
Publisher: Elsevier BV
Date: 06-2022
Publisher: Wiley
Date: 18-06-2021
Abstract: Interfacial solar steam generation offers a promising and cost‐effective way for saline water desalination. However, salt accumulation and deposition on photothermal materials during saline and brine evaporation is detrimental to the stability and sustainability of solar evaporation. Although several antisalt strategies are developed, it is difficult to simultaneously achieve high evaporation rates ( 2.0 kg m −2 h −1 ) and energy efficiencies. In this study, a self‐rotating photothermal evaporator with dual evaporation zones (i.e., high‐temperature and low‐temperature evaporation zones) is developed. This photothermal evaporator is sensitive to weight imbalance ( 15 mg) thus is able to quickly respond to salt accumulation by rotation to refresh the evaporation surface, while the dual evaporation zones optimize the energy nexus during solar evaporation, simultaneously realizing excellent salt‐resistant performance and high evaporation rate (2.6 kg m −2 h −1 ), which can significantly contribute to the real‐world application of solar steam generation technology.
Publisher: Wiley
Date: 07-11-2023
DOI: 10.1002/EOM2.12302
Abstract: Direct conversion of low‐grade heat into electricity by thermal electrochemical cells is a promising strategy for energy generation. For stable heat‐to‐electricity conversion, maintaining a low‐grade heat induced temperature difference between the cell electrodes is essential. Here, a thermogalvanic cell consisting of a cellulose fiber‐based porous aerogel, a liquid electrolyte, a reduced graphene oxide light absorber, and carbon nanotube‐based electrodes is designed for low‐grade thermal energy harvesting and conversion. The low thermal conductivity of the porous cellulose aerogel enables limited heat transfer from the hot side to the cold side, and thermal energy management effectively reduces heat loss from the hot side to the environment. Thus, a sustainable temperature difference between the electrodes is maintained and a corresponding maximum power output of 6.94 mW m −2 is achieved under natural solar irradiation. The obtained thermal electrochemical cells are also integrated into an enclosed interfacial solar evaporation device to harvest the latent heat released from vapor condensation for electricity generation. In addition, the thermal electrochemical cells can be regenerated after 18 months of storage and show no performance degradation. This design thus offers a novel alternative strategy for practical low‐grade heat harvesting. image
Publisher: Springer Science and Business Media LLC
Date: 11-08-2017
DOI: 10.1038/S41598-017-08562-1
Abstract: Real-time measurement of the relative humidity of air has applications ranging from process control to safety. By using a microfiber form-factor, we demonstrate a miniature and fast-response hygrometer with the shortest-ever response time (3 ms). The sensor head consists of an optical microfiber of 10 µm diameter and 2 mm length configured to form a compact U-shaped probe, and functionalized with a polyelectrolyte multilayer coating of 1.0 bilayer. The sensing mechanism is primarily water-absorption-based optical loss. We have measured a response time of 3 ms and a recovery time of 36 ms. The sensitivity is as high as 0.4%/%RH, and the detection limit is as low as 1.6%RH. The maximum relative humidity is 99%RH, before reaching a recoverable dew-point.
Publisher: Elsevier BV
Date: 04-2022
DOI: 10.1016/J.WATRES.2022.118099
Abstract: Interfacial solar steam generation is an efficient way to produce freshwater from saline water. This technology was further harnessed here for simultaneous saline soil remediation and enhanced agricultural sustainability. An interfacial solar evaporation and planting system was designed that uses treated seawater for saline soil washing and agricultural irrigation. In outdoor experiments the evaporator realized high freshwater production (10.95 kg m
Publisher: Elsevier BV
Date: 06-2019
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 10-2017
Publisher: Elsevier BV
Date: 2021
Publisher: IEEE
Date: 07-2017
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 02-2019
Publisher: American Chemical Society (ACS)
Date: 09-12-2020
DOI: 10.1021/ACSSENSORS.9B01897
Abstract: A stronger absorption of pump robe light is desirable for maximizing the sensitivity to enable accurate measurements of trace chemical elements. We introduce a new sensing technique built on light-sheet excitation of skew rays in a multimode fiber with an additional enhancement of localized surface plasmon resonance (LSPR) and its evanescent-field hotspots between gold nanospheres on the coated fiber. A skewed light-sheet (i.e., a thin plane of light) can exploit the optimum ray group, producing enhanced and uniform interactions between light and matter for higher absorption/sensitivity and higher power threshold. The heightened evanescent field couples to the localized surface plasmon resonant modes to attain even greater sensitivity. We compared this excitation method with the previously demonstrated light-sheet skew ray-based sensor without LSPR and observed an enhancement in normalized attenuation of pump light up to seven orders of magnitude for low-concentration rhodamine B. The improvement in the normalized detection limit is almost three orders of magnitude. This new sensing technique uses a functionalized fiber rather than pairing a passive fiber with added functional particles in the analyte, which offers better area-selectivity. The potentially low-cost chemical sensors can be used on a range of sensing mechanisms such as pump robe light absorption.
Publisher: Springer Science and Business Media LLC
Date: 04-11-2020
Publisher: Elsevier BV
Date: 12-2020
Publisher: Wiley
Date: 05-09-2021
DOI: 10.1002/EOM2.12140
Abstract: Interfacial solar steam generation is a green and sustainable technology which has been intensively studied in the fields of seawater desalination and wastewater purification for clean water production. Here, this technology is further developed for soil remediation. A new photothermal evaporator is designed to accelerate the extraction of lead (Pb) from soil solution, thereby successfully rapidly remediating a Pb contaminated soil. Within 2 weeks, this solar‐driven evaporative remediation (SDER) simultaneously decreases the bioavailable Pb fraction by 38.4% (from 359 to 221 mg kg −1 ) with no excessive nutrient loss nor secondary pollution. Post remediation plant assay indicates that the treated soil is significantly less phytotoxic, with shoot/root Pb contents decreasing by 50%. Since SDER involves no external energy input other than solar irradiation ongoing operating costs are low leading to significant potential for sustainable practical applications. Overall, this study demonstrates for the first time that interfacial solar evaporation can be successfully applied to soil remediation. image
Publisher: Optica Publishing Group
Date: 2020
DOI: 10.1364/CLEOPR.2020.C6D_3
Abstract: A sensing platform transforming a light sheet into skew rays then localized surface plasmon resonances is presented, enabling giant enhancement in evanescent-wave-based chemical sensing in optical fiber.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8SC00678D
Abstract: Unconventionally, by placing hydrophilic particles in an oil phase before emulsification, the energy barrier is successfully eliminated and Pickering emulsions are easily formed.
Publisher: Wiley
Date: 22-04-2013
Abstract: Porous hybrid Cu2O olypyrrole nanoflakes have been synthesized from solid CuO nanoplate templates through the pyrrole-induced reductive transformation reaction at elevated temperature. The conversion mechanism involves the reductive transformation of CuO to Cu2O and the in situ oxidative polymerization of pyrrole to polypyrrole. In addition, the morphology of the as-converted nanohybrids depends on the shape of the CuO precursors. The strategy enables us to transform single-crystalline CuO nanosheets into hollow hybrid Cu2O olypyrrole nanoframes. The ability to transform CuO and an organic monomer into porous hybrid materials of conducting polymer and Cu2O with macrosized morphological retention opens up interesting possibilities to create novel nanostructures. Electrochemical examinations show that these porous hybrid Cu2O olypyrrole nanostructures exhibit efficient catalytic activity towards oxygen reduction reaction (ORR), excellent methanol tolerance ability, and catalytic stability in alkaline solution, thus making them promising nonprecious-metal-based catalysts for ORR in alkaline fuel cells and metal-air batteries.
Publisher: Elsevier BV
Date: 10-2022
Start Date: 2023
End Date: 12-2025
Amount: $415,380.00
Funder: Australian Research Council
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