A5062527388- Force Microscopy Techniques and Applications
- Synthesis and properties of polymers
- Mechanical and Optical Resonators
- Microplastics and Plastic Pollution
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- Carbon Nanotubes in Composites
- Recycling and Waste Management Techniques
- Conducting polymers and applications
- 2D Materials and Applications
- Advanced Photocatalysis Techniques
- Near-Field Optical Microscopy
- Integrated Circuits and Semiconductor Failure Analysis
- Nanowire Synthesis and Applications
- Nanomaterials for catalytic reactions
- Catalytic Processes in Materials Science
- Metal Extraction and Bioleaching
- Graphene and Nanomaterials Applications
- Biosensors and Analytical Detection
- TiO2 Photocatalysis and Solar Cells
- MXene and MAX Phase Materials
- Nanopore and Nanochannel Transport Studies
- Advanced Sensor and Energy Harvesting Materials
- Ion-surface interactions and analysis
- Supercapacitor Materials and Fabrication
Flinders University
2016-2025
The University of Adelaide
2015-2025
Dana-Farber Cancer Institute
2023
Konkuk University
2017
Iowa State University
2017
Ames National Laboratory
2017
Swinburne University of Technology
2017
University of Strathclyde
2011
University of Birmingham
2005-2007
University of Derby
2007
Graphene has emerged as a material with vast variety of applications. The electronic, optical and mechanical properties graphene are strongly influenced by the number layers present in sample. As result, dimensional characterization films is crucial, especially continued development new synthesis methods A techniques exist to determine thickness including contrast, Raman scattering scanning probe microscopy techniques. Atomic force (AFM), particular, used extensively since it provides...
A novel nitrogen doped hybrid material composed of in situ-formed graphene natively grown on hierarchical ordered porous carbon is prepared, which successfully combines the advantages both materials, such as high surface area, mass transfer, and conductivity. The outstanding structural properties resultant render it an excellent metal-free catalyst for electrochemical oxygen reduction.
A polysulfide material was synthesized by the direct reaction of sulfur and d-limonene, by-products petroleum citrus industries, respectively. The resulting processed into functional coatings or molded solid devices for removal palladium mercury salts from water soil. binding mercury(II) to sulfur-limonene resulted in a color change. These properties motivate application next-generation environmental remediation sensing.
Abstract Mercury pollution threatens the environment and human health across globe. This neurotoxic substance is encountered in artisanal gold mining, coal combustion, oil gas refining, waste incineration, chloralkali plant operation, metallurgy, areas of agriculture which mercury‐rich fungicides are used. Thousands tonnes mercury emitted annually through these activities. With Minamata Convention on entering force this year, increasing regulation imminent. It therefore critical to provide...
Abstract Graphene oxide is extensively compounded with polymers toward a wide variety of applications. Less studied are few‐layer or multi‐layer highly crystalline graphene, both which herein named as graphene platelets. This article aims to provide the most recent advancements platelets and their polymer composites. A first focus lies on cost‐effective fabrication strategies – intercalation exfoliation work in relative mass scale, e.g., 5.3 g h −1 . As no heavy oxidization involved, have...
A direct, accurate and convenient procedure for calibrating the spring constants of probes used force microscopy/spectroscopy is described. It amounts to deflecting an `unknown' cantilever with a `standard' lever, where standard lever has been precalibrated. The absolute relative accuracies are - 30% 20%, respectively; former limited by uncertainties in determination constant as well that `unknown'. method differs from others static deflection variety its exploitation routine features...
Abstract Crude oil and hydrocarbon fuel spills are a perennial threat to aquatic environments. Inexpensive sustainable sorbents needed mitigate the ecological harm of this pollution. To address need, study features low‐density polysulfide polymer that is prepared by direct reaction sulfur used cooking oils. Because both oils hydrophobic, has an affinity for hydrocarbons such as crude diesel can rapidly remove them from seawater. Through simple mechanical compression, be recovered reused in...
Atomic force microscope (AFM) users often calibrate the spring constants of cantilevers using functionality built into individual instruments. This is performed without reference to a global standard, which hinders robust comparison measurements reported by different laboratories. In this article, we describe virtual instrument (an internet-based initiative) whereby from all laboratories can instantly and quantitatively compare their calibration those others - standardising AFM...
Polymers made by inverse vulcanization can be assembled, repaired, and recycled at room temperature through nucleophile-catalyzed S–S metathesis.
Sulfur is an underused by-product of the petrochemicals industry. Recent research into inverse vulcanization has shown how this excess sulfur can be transformed functional polymers, by stabilization with organic crosslinkers. For these interesting new materials to realize their potential for applications, more understanding and control physical properties needed. Here we report four terpolymers prepared from two distinct alkene monomers that predictively tuned in glass transition, molecular...
Inverse vulcanization provides dynamic and responsive materials made from elemental sulfur unsaturated cross-linkers. These polymers have been used in a variety of applications such as energy storage, infrared optics, repairable materials, environmental remediation, precision fertilizers. In spite these advances, there is need for methods to recycle reprocess polymers. this study, prepared by inverse are shown undergo reactive compression molding. process, the interfaces brought into contact...
A polymer prepared by co-polymerisation of sulfur and canola oil removed Fe<sup>3+</sup> from water. Microwave irradiation was convenient in promoting the polymerisation.
With increasing interest in high sulfur content polymers, there is a need to develop new methods for their synthesis that feature improved safety and control of structure. In this report, electrochemically initiated ring-opening polymerization norbornene-based cyclic trisulfide monomers delivered well-defined, linear poly(trisulfides), which were solution processable. Electrochemistry provided controlled initiation step obviates the hazardous chemical initiators. The temperatures required...
Herein, we demonstrate the fabrication of a novel nano-hybrid material based on diatom silica microparticles from diatomaceous earth (DE) and graphene oxide (GO). Two different approaches for nano-hybrids were used, including covalent coupling GO sheets onto surface electrostatic attachment. Covalent attachment was carried out through facile amine strategy via activation carboxyl groups GO, followed by to terminal 3-aminopropyl-triethoxysilane (APTES) functionalized DE particles....
Abstract High‐quality, few‐layer black‐phosphorus (BP) flakes are prepared in a common organic solvent with very short processing times using microwave‐assisted liquid‐phase exfoliation. A comprehensive range of analysis, combined density‐functional theory calculations, confirms that the product microwave technique is BP small‐ and large‐area flakes. The suspended exfoliated sheets show excellent stability, while samples dispersed onto silicon from suspensions exhibit low oxidation levels...
Black phosphorus quantum dots exhibit an impressive catalytic activity for oxygen evolution reaction.
Abstract A simple and fast “top‐down” protocol is introduced herein to prepare solution processable few‐layer phosphorene nanosheets using vortex fluidic mediated exfoliation under near‐infrared (NIR) pulsed laser irradiation. This novel shear‐exfoliation method requires short processing times produces highly crystalline, atomically thin (4.3 ± 0.4 nm). The as‐prepared are used as an effective electron transporting material (ETM) for low‐temperature processed, planar n‐i‐p perovskite solar...
Abstract With increasing use of infrared imaging in medical diagnostics, military and civilian surveillance, navigation autonomous vehicles, there is a need for low‐cost alternatives to traditional materials used optics such as germanium. Sulfur‐rich copolymers hold promise, they are made from feedstocks have high refractive index. In this report, cyclopentadiene copolymerized with sulfur provide plastic the highest long‐wave transparency reported date class materials. Diverse lens...
Research into efficient synthesis, fundamental properties, and potential applications of phosphorene is currently the subject intense investigation. Herein, solution-processed or few-layer black phosphorus (FL-BP) sheets are prepared using a microwave exfoliation method used in photoelectrochemical cells. Based on experimental theoretical (DFT) studies, FL-BP found to act as catalytically active sites show excellent electrocatalytic activity for triiodide reduction dye-sensitized solar...