ORCID Profile
0000-0003-0169-6479
Current Organisation
University of Western Australia
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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.
Chemical Engineering | Materials Engineering | Metals and Alloy Materials | Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels) | Materials Engineering not elsewhere classified | Functional Materials | Composite and Hybrid Materials | Geology | Chemical Sciences not elsewhere classified | Chemical Engineering not elsewhere classified | Mineralogy and Crystallography | Chemical Engineering Design | Composite Materials | Structural Chemistry and Spectroscopy | Structural Geology | Optical Physics not elsewhere classified | Industrial Chemistry | Manufacturing Processes and Technologies (excl. Textiles) | Soil Chemistry (excl. Carbon Sequestration Science) | Fluidisation and Fluid Mechanics | Carbon Sequestration Science | Technology not elsewhere classified | Condensed Matter Physics—Structural Properties |
Fabricated Metal Products not elsewhere classified | Biofuel (Biomass) Energy | Semi-Finished Metal Products | Expanding Knowledge in Engineering | Energy Transformation not elsewhere classified | Climate Change Mitigation Strategies | Preparation and Production of Energy Sources not elsewhere classified | Other | Organic Industrial Chemicals (excl. Resins, Rubber and Plastics) | Primary Mining and Extraction of Mineral Resources not elsewhere classified | Ceramics, Glass and Industrial Mineral Products not elsewhere classified | Integrated circuits and devices | Machined products | Energy transformation not elsewhere classified | Energy Storage (excl. Hydrogen) | Rehabilitation of Degraded Mining Environments | Energy Conservation and Efficiency in Transport | Energy not elsewhere classified | Rubber and Synthetic Resins | Cement and concrete materials | Expanding Knowledge in the Earth Sciences | Management of Solid Waste from Manufacturing Activities | Manufactured products not elsewhere classified | Environmentally Sustainable Transport not elsewhere classified
Publisher: American Chemical Society (ACS)
Date: 02-01-2018
Abstract: A rapid method to high-yield synthesis of modified graphite by microwave irradiation of partially oxidized graphite (oxidized by H
Publisher: Elsevier BV
Date: 10-2006
Publisher: Elsevier BV
Date: 02-2021
Publisher: The Electrochemical Society
Date: 2001
DOI: 10.1149/1.1373377
Publisher: Wiley
Date: 10-1905
Publisher: Elsevier BV
Date: 11-1993
Publisher: Elsevier BV
Date: 02-2012
Publisher: Elsevier BV
Date: 10-2012
Publisher: Elsevier BV
Date: 02-2008
Publisher: Elsevier BV
Date: 2000
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 08-2016
Publisher: Elsevier BV
Date: 03-2007
Publisher: Elsevier BV
Date: 08-2016
Publisher: Elsevier BV
Date: 04-2004
Publisher: American Chemical Society (ACS)
Date: 10-01-2022
Publisher: Springer Science and Business Media LLC
Date: 14-01-2015
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 12-2022
Publisher: Elsevier BV
Date: 04-1995
Publisher: Elsevier BV
Date: 2015
DOI: 10.1016/J.CHEMOSPHERE.2015.06.079
Abstract: Biochar adsorption may lower concentrations of soluble metals in pore water of sulphidic Cu/Pb-Zn mine tailings. Unlike soil, high levels of salinity and soluble cations are present in tailing pore water, which may affect biochar adsorption of metals from solution. In the present study, removal of soluble copper (Cu) and zinc (Zn) ions by soft- (pine) and hard-wood (jarrah) biochars pyrolysed at high temperature (about 700 °C) was evaluated under typical ranges of pH and salinity conditions resembling those in pore water of sulphidic tailings, prior to their direct application into the tailings. Surface alkalinity, cation exchange capacity, and negative surface charge of biochars affected Cu and Zn adsorption capacities. Quantitative comparisons were provided by fitting the adsorption equilibrium data with either the homogeneous or heterogeneous surface adsorption models (i.e. Langmuir and Freundlich, respectively). Accordingly, the jarrah biochar showed higher Cu and Zn adsorption capacity (Qmax=4.39 and 2.31 mg/g, respectively) than the softwood pine biochar (Qmax=1.47 and 1.00 mg/g). Copper and Zn adsorption by the biochars was favoured by high pH conditions under which they carried more negative charges and Cu and Zn ions were predicted undergoing hydrolysis and polymerization. Within the tested range, salinity had relatively weak effects on the adsorption, which perhaps influenced the surface charge and induced competition for negative charged sites between Na(+) and exchangeable Ca(2+) and/or heavy metal ions. Large amounts of waste wood/timber at many mine sites present a cost-effective opportunity to produce biochars for remediation of sulphidic tailings and seepage water.
Publisher: Elsevier BV
Date: 10-2022
Publisher: American Chemical Society (ACS)
Date: 11-12-2018
Publisher: Elsevier BV
Date: 06-2018
Publisher: MDPI AG
Date: 19-08-2021
Abstract: Guaiacol is a typical model compound used to investigate and understand the hydrodeoxygenation behaviour of bio-oils, which is critical to their application as an alternative to fossil resources. While extensive research has been carried out on developing catalysts for guaiacol hydrodeoxygenation, the true active sites in these catalysts are often illusive. This study investigated the effect of Au-loading on the catalytic activity of NiTiO3 for the hydrodeoxygenation of guaiacol. It showed that metallic Ni formed by the partial reduction in NiTiO3 was responsible for its catalytic activity. Au-loading in NiTiO3 effectively reduces the temperature required for the NiTiO3 reduction from 400 °C to 300 °C. Consequently, at an Au-loading of 0.86 wt%, the 0.86 Au/NiTiO3-300 °C catalyst was found to deliver a guaiacol conversion of ~32%, more than 6 times higher than that of the pure NiTiO3-300 °C catalyst.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 11-2003
Publisher: The Electrochemical Society
Date: 06-1992
DOI: 10.1149/1.2069471
Publisher: Elsevier BV
Date: 03-2008
Publisher: Elsevier BV
Date: 08-2016
Publisher: IOP Publishing
Date: 15-01-2007
Publisher: Elsevier BV
Date: 05-2023
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 2017
DOI: 10.1016/J.SCITOTENV.2016.10.119
Abstract: Biochar has the potential to mitigate nitrous oxide (N
Publisher: Springer Science and Business Media LLC
Date: 07-12-2021
Publisher: Elsevier BV
Date: 12-2010
Publisher: Elsevier BV
Date: 11-2022
Publisher: Elsevier BV
Date: 12-2011
Publisher: Springer Science and Business Media LLC
Date: 05-01-2012
Abstract: 5-Hydroxymethylfurfural [HMF] is an important intermediate compound for fine chemicals. It is often obtained via hydrothermal treatment of biomass-derived carbohydrates, such as fructose, glucose and sucrose. This study investigates the formation of carbonaceous spheres from HMF created by dehydration of fructose under hydrothermal conditions. The carbonaceous spheres, ranging between 0.4 and 10 μm in diameter, have granulated morphologies both on the surface and in the interior. The residual solution is found to contain a massive number of primary nanoparticles. The chemical structure of the carbonaceous spheres was characterised by means of FTIR and NMR spectroscopies. Based on these observations, a mechanism involving the formation and aggregation of the nanoparticles is proposed. This mechanism differs considerably from the conventional understanding in the open literature.
Publisher: Elsevier BV
Date: 06-2017
Publisher: No publisher found
Date: 2013
Publisher: Elsevier BV
Date: 07-2020
Publisher: Elsevier BV
Date: 02-2019
Publisher: Elsevier BV
Date: 03-2015
Publisher: American Chemical Society (ACS)
Date: 05-2018
DOI: 10.1021/ACS.NANOLETT.8B00427
Abstract: Freestanding nanomaterials (such as nanowires, nanoribbons, and nanotubes) are known to exhibit ultralarge elastic strains and ultrahigh strengths. However, harnessing their superior intrinsic mechanical properties in bulk composites has proven to be difficult. A recent breakthrough has overcome this difficulty by using a martensitic phase transforming matrix in which ultralarge elastic strains approaching the theoretical limit is achieved in Nb nanowires embedded in the matrix. This discovery, breaking a long-standing challenge, still limits our ability of harnessing the exceptional properties of nanomaterials and developing ultrahigh strength bulk materials to a narrow selection of phase transforming alloy matrices. In this study, we investigated the possibility to harness the intrinsic mechanical properties of nanoinclusions in conventional dislocation slip matrix based on a principle of synergy between the inclusion and the matrix. The small spacing between the densely populated hard and dislocation-impenetrable nanoinclusions departmentalize the plastic matrix into small domains to effectively impede dislocation motion within the matrix, inducing significant strengthening and large local elastic strains of the matrix, which in turn induced large elastic strains in the nanoinclusions. This dual phase synergy is verified in a Ti
Publisher: Elsevier BV
Date: 09-2018
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 08-2005
Publisher: Springer Science and Business Media LLC
Date: 1988
DOI: 10.1557/PROC-135-319
Abstract: Poly(ethylene oxide) is a non-aqueous solvent which can dissolve high concentrations of a wide variety of monovalent and alent cation salts. The resulting solutions are generally heterogeneous mixtures of crystalline and amorphous regions. The amorphous components have relatively high ionic conductivities, and PEO ‘quasi-solid’ electrolytes and related polymer materials are arguably a new class of electrolyte, with properties in between those of true solids and true liquids. This paper briefly discusses the preparation and properties of PEO electrolytes containing Mg(II), Zn(II), and Pb(II) salts.
Publisher: American Chemical Society (ACS)
Date: 15-12-2020
Publisher: Elsevier BV
Date: 08-2011
Publisher: Springer Science and Business Media LLC
Date: 03-2017
Publisher: IOP Publishing
Date: 08-04-2015
Publisher: Springer Science and Business Media LLC
Date: 12-09-2017
DOI: 10.1007/S10653-016-9873-6
Abstract: A wide range of waste biomass/waste wood feedstocks abundantly available at mine sites provide the opportunity to produce biochars for cost-effective improvement of mine tailings and contaminated land at metal mines. In the present study, soft- and hardwood biochars derived from pine and jarrah woods at high temperature (700 °C) were characterized for their physiochemical properties including chemical components, electrical conductivity, pH, zeta potential, cation-exchange capacity (CEC), alkalinity, BET surface area and surface morphology. Evaluating and comparing these characteristics with available data from the literature have affirmed the strong dictation of precursor type on the physiochemical properties of the biochars. The pine and jarrah wood feedstocks are mainly different in their proportions of cellulose, hemicellulose and lignin, resulting in biochars with heterogeneous physiochemical properties. The hardwood jarrah biochar exhibits much higher microporosity, alkalinity and electrostatic capacity than the softwood pine. Correlation analysis and principal component analysis also show a good correlation between CEC-BET-alkalinity, and alkalinity-ash content. These comprehensive characterization and analysis results on biochars' properties from feedstocks of hardwood (from forest land clearance at mine construction) and waste pine wood (from mining operations) will provide a good guide for tailoring biochar functionalities for remediating metal mine tailings. The relatively inert high-temperature biochars can be stored for a long term at mine closure after decades of operations.
Publisher: Elsevier BV
Date: 12-2011
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 2017
Publisher: Elsevier BV
Date: 09-2022
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 2023
Publisher: IOP Publishing
Date: 24-10-2016
Publisher: Elsevier BV
Date: 10-2019
Publisher: Elsevier BV
Date: 02-2015
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5RA11057B
Abstract: ZSM-5 products with inter-crystalline mesopores originating from the SI-ONSs can be produced in the ternary composition domain established.
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 02-2013
Publisher: Elsevier BV
Date: 03-2021
Publisher: Japan Institute of Metals
Date: 2002
Publisher: Elsevier BV
Date: 10-2023
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 10-2023
Publisher: Springer Science and Business Media LLC
Date: 23-01-2016
Publisher: IntechOpen
Date: 07-10-2020
Publisher: American Chemical Society (ACS)
Date: 04-2022
Abstract: Soft actuators that respond to external stimuli like moisture, magnetism, light, and temperature have received tremendous attention owing to their promising potential in many frontier applications, including smart switches, soft robots, sensors, and artificial muscles. However, most of the conventional actuators can only be triggered by a solo stimulus and demand advanced manufacturing techniques that utilize expensive, hazardous, and synthetic raw materials. Herein, we design and fabricate a multiple stimuli-responsive actuator using graphene oxide, Fe
Publisher: American Physical Society (APS)
Date: 06-07-2021
Publisher: Elsevier BV
Date: 11-2021
Publisher: Springer Science and Business Media LLC
Date: 27-09-2011
Publisher: Elsevier BV
Date: 02-1999
Publisher: Elsevier BV
Date: 12-2018
Publisher: Elsevier BV
Date: 10-2011
Publisher: Springer Science and Business Media LLC
Date: 12-09-2014
Publisher: Elsevier BV
Date: 08-2012
Publisher: Wiley
Date: 25-08-2022
Abstract: Photoreduction of CO 2 to C 2+ solar fuel is a promising carbon‐neutral technology for renewable energy. This strategy is challenged by its low productivity due to low efficiency in multielectron utilization and slow C−C coupling kinetics. This work reports a dual‐metal photocatalyst consisting of atomically dispersed indium and copper anchored on polymeric carbon nitride (InCu/PCN), on which the photoreduction of CO 2 delivered an excellent ethanol production rate of 28.5 μmol g −1 h −1 with a high selectivity of 92 %. Coupled experimental investigation and DFT calculations reveal the following mechanisms underpinning the high performance of this catalyst. Essentially, the In−Cu interaction enhances the charge separation by accelerating charge transfer from PCN to the metal sites. Indium also transfers electrons to neighboring copper via Cu−N−In bridges, increasing the electron density of copper active sites. Furthermore, In−Cu dual‐metal sites promote the adsorption of *CO intermediates and lower the energy barrier of C−C coupling.
Publisher: Springer Science and Business Media LLC
Date: 30-10-2023
Publisher: Springer Science and Business Media LLC
Date: 25-07-2012
DOI: 10.1038/NATURE11318
Abstract: The rapid disruption of tropical forests probably imperils global bio ersity more than any other contemporary phenomenon. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental stresses. As pressures mount, it is vital to know whether existing reserves can sustain their bio ersity. A critical constraint in addressing this question has been that data describing a broad array of bio ersity groups have been unavailable for a sufficiently large and representative s le of reserves. Here we present a uniquely comprehensive data set on changes over the past 20 to 30 years in 31 functional groups of species and 21 potential drivers of environmental change, for 60 protected areas stratified across the world’s major tropical regions. Our analysis reveals great variation in reserve ‘health’: about half of all reserves have been effective or performed passably, but the rest are experiencing an erosion of bio ersity that is often alarmingly widespread taxonomically and functionally. Habitat disruption, hunting and forest-product exploitation were the strongest predictors of declining reserve health. Crucially, environmental changes immediately outside reserves seemed nearly as important as those inside in determining their ecological fate, with changes inside reserves strongly mirroring those occurring around them. These findings suggest that tropical protected areas are often intimately linked ecologically to their surrounding habitats, and that a failure to stem broad-scale loss and degradation of such habitats could sharply increase the likelihood of serious bio ersity declines.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6SC03533G
Abstract: A type B radical-SAM methylase homologue catalyses thiazoline C-methylation as the final step of watasemycin biosynthesis in Streptomyces venezuelae ATCC10712.
Publisher: Elsevier BV
Date: 12-2023
Publisher: Elsevier BV
Date: 10-2016
Publisher: Elsevier BV
Date: 12-2008
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 03-1995
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 08-2010
Publisher: Elsevier BV
Date: 07-2018
Publisher: Elsevier BV
Date: 12-2019
Publisher: Elsevier BV
Date: 2012
Publisher: Elsevier BV
Date: 02-2020
Publisher: Springer Science and Business Media LLC
Date: 04-1998
Publisher: Elsevier BV
Date: 03-2022
Publisher: Elsevier BV
Date: 09-2023
Publisher: Wiley
Date: 04-04-2021
DOI: 10.1002/AIC.17261
Abstract: A thorough experimental investigation on the kinetic behavior of liquid‐phase propylene epoxidation over TS‐1 and tetrapropylammonium hydroxide (TPAOH) treated TS‐1 catalysts was conducted in a fixed‐bed reactor. The amounts of different coordinated Ti species in the catalysts were quantified by spectroscopies, and their catalytic performances of the epoxidation and alcoholysis of propylene oxide were measured by kinetic modeling. The study shows that the TPAOH treatment converted some of the tetrahedrally coordinated Ti to octahedrally coordinated Ti, and both species were active for the epoxidation and alcoholysis. The superior catalytic performance observed over the TPAOH treated TS‐1 is due to two factors, the increased percentage of active sites, and reduced energy barrier for epoxidation on the octahedrally coordinated Ti. In addition, as the H 2 O 2 conversion increases, the adsorption equilibrium constant of propylene oxide plays a more decisive role than the activation energy for the selectivity of propylene glycol monomethyl ethers.
Publisher: American Chemical Society (ACS)
Date: 13-07-2022
Publisher: Elsevier BV
Date: 02-2012
Publisher: Elsevier BV
Date: 08-1990
Publisher: Elsevier BV
Date: 10-2015
Publisher: Elsevier BV
Date: 03-2008
Publisher: Springer Science and Business Media LLC
Date: 19-05-2011
DOI: 10.1557/JMR.2011.54
Publisher: IEEE
Date: 05-2011
Publisher: American Scientific Publishers
Date: 2013
Publisher: Elsevier BV
Date: 07-2014
Publisher: Elsevier BV
Date: 05-2017
Publisher: Elsevier BV
Date: 02-2023
Publisher: Elsevier BV
Date: 02-2008
Publisher: Elsevier BV
Date: 08-2009
Publisher: Elsevier BV
Date: 04-2022
Publisher: Informa UK Limited
Date: 03-2013
Publisher: Elsevier BV
Date: 10-2011
Publisher: Elsevier BV
Date: 04-2011
Publisher: AIP Publishing
Date: 07-02-2011
DOI: 10.1063/1.3554423
Abstract: This letter reports on an alloy design of Mn50Ni37In10Co3 based on the principle of Mn-Mn ferromagnetic coupling via Co doping. The alloy is shown to exhibit a metamagnetic martensitic transformation and a high saturation magnetization of 118 emu/g in its austenitic state. The transformation generates a large magnetization difference of 89 emu/g, more than 200% of what is reported in the literature for similar alloys. A complete magnetic field induced martensitic transformation was achieved at 170 K. Such a high magnetization difference provides a strong driving force for magnetic-field-induced transformation, making this material a promising candidate for magnetic actuation applications.
Publisher: American Chemical Society (ACS)
Date: 08-12-2014
DOI: 10.1021/IE5036308
Publisher: Elsevier BV
Date: 08-2020
Publisher: Springer Science and Business Media LLC
Date: 10-1993
DOI: 10.1007/BF00367844
Publisher: World Scientific Pub Co Pte Lt
Date: 02-2017
DOI: 10.1142/S1793604717400112
Abstract: Owing to geometrical non-uniformity, geometrically graded shape memory alloy (SMA) structures by design have the ability to exhibit different and novel thermal and mechanical behaviors compared to geometrically uniform conventional SMAs. This paper reports a study of the pseudoelastic behavior of geometrically graded NiTi plates. This geometrical gradient creates partial stress gradient over stress-induced martensitic transformation, providing enlarged stress controlling interval for shape memory actuation. Finite element modeling framework has been established to predict the deformation behavior of such structures in tensile loading cycles, which was validated by experiments. The modeling results show that the transformation mostly propagates along the gradient direction as the loading level increases.
Publisher: Wiley
Date: 10-07-2022
Abstract: Actuators triggered by water evaporation have found potential applications in a wide range of emerging fields, including smart structures, power generators, artificial muscles, and soft robots. In addition to poor mechanical performance, conventional actuators raise major economic and environmental concerns due to their expensive and complex synthesis processes with hazardous chemicals and high ecological footprint. Herein, a nacre‐inspired moisture‐responsive actuator is fabricated using graphene oxide (GO) and tapioca starch (TS), a water‐soluble, low‐cost, and eco‐friendly natural polymer. The resultant TS/GO nanocomposite film has excellent mechanical properties and exhibits rapid and autonomous locomotion under moisture attack. Moreover, the actuator demonstrates a bending speed of ≈60° s −1 and has the potential to lift a load up to ten times its own weight. Based on these features, a novel moisture detection alarm system with control and operating circuits is assembled using the TS/GO film. Furthermore, the TS/GO actuator shows that it is capable of mimicking biological structures like flowers and can undergo locomotion even for nonwater vapors like isopropyl alcohol, ethanol, and chloroform.
Publisher: Elsevier BV
Date: 03-2019
Publisher: Springer Science and Business Media LLC
Date: 1993
DOI: 10.1007/BF00420530
Publisher: Elsevier BV
Date: 2014
Publisher: IOP Publishing
Date: 02-10-2018
Publisher: IOP Publishing
Date: 05-2010
Publisher: The Electrochemical Society
Date: 2002
DOI: 10.1149/1.1420705
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 05-2012
Publisher: Elsevier BV
Date: 06-2018
Publisher: Springer Science and Business Media LLC
Date: 03-2017
Publisher: Elsevier BV
Date: 03-2008
Publisher: Elsevier BV
Date: 04-2011
Publisher: Elsevier BV
Date: 07-2020
Publisher: AIP Publishing
Date: 17-02-1992
DOI: 10.1063/1.106529
Abstract: The effect of mechanical milling on the structure of the Nd2Fe14B intermetallic has been investigated using x-ray diffraction and electron microscopy. The milling resulted in the decomposition of Nd2Fe14B into α-Fe and an amorphous phase. Attempts to mechanically alloy Fe and Nd powders resulted in a nanocrystalline mixture of the same two phases.
Publisher: Elsevier BV
Date: 11-2011
Publisher: Elsevier BV
Date: 03-2023
Publisher: American Chemical Society (ACS)
Date: 17-09-2021
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 08-2017
Publisher: Springer Science and Business Media LLC
Date: 15-11-2014
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 06-2010
Publisher: IOP Publishing
Date: 07-02-2020
Publisher: Wiley
Date: 19-09-2019
Abstract: Nanosized materials are known to have the ability to withstand ultralarge elastic strains (4-10%) and to have ultrahigh strengths approaching their theoretical limits. However, it is a long-standing challenge to harnessing their exceptional intrinsic mechanical properties in bulk forms. This is commonly known as "the valley of death" in nanocomposite design. In 2013, a breakthrough was made to overcome this challenge by using a martensitic phase transforming matrix to create a composite in which ultralarge elastic lattice strains up to 6.7% are achieved in Nb nanoribbons embedded in it. This breakthrough was enabled by a novel concept of phase transformation assisted lattice strain matching between the uniform ultralarge elastic strains (4-10%) of nanomaterials and the uniform crystallographic lattice distortion strains (4-10%) of the martensitic phase transformation of the matrix. This novel concept has opened new opportunities for developing materials of exceptional mechanical properties or enhanced functional properties that are not possible before. The work in progress in this research over the past six years is reported.
Publisher: Elsevier BV
Date: 03-2014
Publisher: IOP Publishing
Date: 05-09-2011
DOI: 10.1088/0022-3727/44/38/385403
Abstract: This study investigated the effect of Co substitution for Ni in Mn 50 Ni 42 Sn 8 alloy with the aim of increasing the magnetic driving force for inducing its martensitic transformation. The martensitic transformation temperatures, enthalpy and entropy changes were found to decrease progressively with increasing Co content, while the transformation hysteresis increased. Co substitution for Ni also significantly increased the magnetization of the austenite, but with negligible effect on that of the martensite. A large magnetization difference 109 emu g −1 was achieved across the transformation in a Mn 50 Ni 34 Sn 8 Co 8 alloy. The large magnetization difference between the two phases provides enhanced thermodynamic driving force for the transformation. Consequently, the martensitic transformation was induced by the application of a magnetic field in Mn 50 Ni 36 Sn 8 Co 6 and Mn 50 Ni 34 Sn 8 Co 8 alloys. The effect of Co substitution for Ni on the magnetic interaction among the constituents for the austenite and martensite was clarified in this study, which provides a guide for alloy design for magnetoactuation applications.
Publisher: Springer Science and Business Media LLC
Date: 10-07-2018
Publisher: Elsevier BV
Date: 10-2019
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE25420D
Publisher: MDPI AG
Date: 30-04-2021
DOI: 10.3390/MA14092339
Abstract: Isothermal annealing of a eutectic dual phase Ni–Mn–Sn–Fe alloy was carried out to encourage grain growth and investigate the effects of grain size of the γ phase on the martensitic transformation behaviour and mechanical properties of the alloy. It is found that with the increase of the annealing time, the grain size and volume fraction of the γ phase both increased with the annealing time predominantly by the inter-diffusion of Fe and Sn elements between the γ phase and the Heusler matrix. The isothermal anneals resulted in the decrease of the e/a ratio and suppression of the martensitic transformation of the matrix phase. The fine γ phase microstructure with an average grain size of 0.31 μm showed higher fracture strength and ductility values by 28% and 77% compared to the coarse-grained counterpart with an average grain size of 3.31 μm. The fine dual phase microstructure shows a quasi-linear superelasticity of 4.2% and very small stress hysteresis during cyclic loading, while the coarse dual phase counterpart presents degraded superelasticity of 2.6% and large stress hysteresis. These findings indicate that grain size refinement of the γ phase is an effective approach in improving the mechanical and transformation properties of dual phase Heusler alloys.
Publisher: Royal Society of Chemistry (RSC)
Date: 2020
DOI: 10.1039/D0CY00970A
Abstract: The stability of TS-1 extrudates in 1-butene epoxidation was significantly improved by introducing different substances with high heat conductive rates.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 05-1994
Publisher: Elsevier BV
Date: 07-2022
Publisher: World Scientific Pub Co Pte Lt
Date: 03-2011
DOI: 10.1142/S1793604711001683
Abstract: Mild chemical bath route at 60–80°C led to the redox reaction between MnSO 4 and KMnO 4 to form MnO 2 . The as-synthesized MnO 2 was a mixture of both α- and δ-phases, which has enhanced electrochemical capacitance performances. Pure α-, δ- and γ- MnO 2 were also chemically prepared in the current solution system. The electrochemical performances of the as-prepared MnO 2 s les were evaluated as an electrode for supercapacitor by recording cyclic voltammograms and galvanostatic charge-discharge curves. The crystallographic structure of MnO 2 was found to be determined by the chemical bath reaction temperature and time. In the current work, we purposefully designed the optimum reaction parameters to synthesize high performance mixed-phase MnO 2 through mild chemical bath route, ultimately for enhancing the capacitance of powder-based electrodes.
Publisher: Elsevier BV
Date: 09-2012
Publisher: Elsevier BV
Date: 09-2009
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 26-06-2018
DOI: 10.1111/GCBB.12529
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2QI00686C
Abstract: The co-existence of (Pt + Ni) effectively inhibits the formation of low-carbon olefins during the alkylation of toluene with methanol via the dehydrogenation of methanol to carbon oxides and also the hydrogenation of olefins to paraffins.
Publisher: Elsevier BV
Date: 05-2022
Publisher: Springer Science and Business Media LLC
Date: 27-09-2016
DOI: 10.1038/SREP33252
Abstract: Mixing is an important method to improve the performance of surfactants due to their synergistic effect. The changes in bonding interaction and adsorption structure of IM and OP molecules before and after co-adsorbed on Fe(001) surface is calculated by DFTB+ method. It is found that mixture enable the inhibitor molecules with higher E HOMO donate more electrons while the inhibitor molecules with lower E LUMO accept more electrons, which strengthens the bonding interaction of both inhibitor agent and inhibitor additive with metal surface. Meanwhile, water molecules in the compact layer of double electric layer are repulsed and the charge transfer resistance during the corrosion process increases. Accordingly, the correlation between the frontier orbital (E HOMO and E LUMO of inhibitor molecules and the Fermi level of metal) and inhibition efficiency is determined. Finally, we propose a frontier orbital matching principle for the synergistic effect of inhibitors, which is verified by electrochemical experiments. This frontier orbital matching principle provides an effective quantum chemistry calculation method for the optimal selection of inhibitor mixture.
Publisher: American Scientific Publishers
Date: 06-2012
Publisher: Elsevier BV
Date: 12-2019
Publisher: Springer Science and Business Media LLC
Date: 30-01-2015
Publisher: American Chemical Society (ACS)
Date: 16-08-2021
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 07-2021
Publisher: Wiley
Date: 29-08-2022
DOI: 10.1002/AIC.17870
Abstract: A monolithic titanium silicalite‐1 (TS‐1) catalyst was prepared by coating TS‐1 onto a specially designed stainless‐steel support. The catalyst was used in 1‐butene epoxidation, a strong exothermic reaction, to produce butene oxide in a fixed‐bed reactor. Compared with the traditional extruded TS‐1, the monolithic catalyst demonstrates excellent catalytic stability and reusability. To understand the reason for this performance, heat conduction behaviors of the monolithic and extruded catalysts were studied and compared. This was accomplished by firstly developing a kinetic model to determine reaction kinetic parameters, and then simulating the temperature distribution within the reactor. It revealed a much lower temperature‐rise over the monolithic catalyst than over the extruded catalyst. This study demonstrates that the stainless‐steel support of the monolithic catalyst is effective in dissipating high reaction heat of 1‐butene epoxidation, thus limits local temperature‐rise within the reactor. This inhibits the formation of channel‐blocking byproducts and improves the catalytic stability.
Start Date: 05-2018
End Date: 12-2022
Amount: $408,011.00
Funder: Australian Research Council
View Funded ActivityStart Date: 10-2012
End Date: 08-2017
Amount: $230,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2019
End Date: 12-2019
Amount: $609,865.00
Funder: Australian Research Council
View Funded ActivityStart Date: 05-2016
End Date: 05-2019
Amount: $420,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2014
End Date: 05-2017
Amount: $400,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2011
End Date: 12-2011
Amount: $290,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2007
End Date: 12-2008
Amount: $500,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 11-2016
End Date: 12-2021
Amount: $750,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 09-2011
End Date: 12-2017
Amount: $2,500,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 05-2011
End Date: 05-2014
Amount: $300,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2013
End Date: 12-2014
Amount: $200,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 2010
End Date: 12-2012
Amount: $360,000.00
Funder: Australian Research Council
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