A5008865748- Minerals Flotation and Separation Techniques
- Polymer Surface Interaction Studies
- Surfactants and Colloidal Systems
- Metal Extraction and Bioleaching
- Pickering emulsions and particle stabilization
- Fluid Dynamics and Mixing
- Iron oxide chemistry and applications
- Proteins in Food Systems
- Molecular Junctions and Nanostructures
- Force Microscopy Techniques and Applications
- Mineral Processing and Grinding
- Electrochemical Analysis and Applications
- Advanced Chemical Physics Studies
- Ionic liquids properties and applications
- Hydrogels: synthesis, properties, applications
- Extraction and Separation Processes
- Coagulation and Flocculation Studies
- Electrostatics and Colloid Interactions
- Gold and Silver Nanoparticles Synthesis and Applications
- Spectroscopy and Quantum Chemical Studies
- Mine drainage and remediation techniques
- Calcium Carbonate Crystallization and Inhibition
- Food Chemistry and Fat Analysis
- Marine Biology and Environmental Chemistry
- Conducting polymers and applications
University of South Australia
2016-2025
ARC Centre of Excellence for Enabling Eco-Efficient Beneficiation of Minerals
2021-2025
AstraZeneca (United Kingdom)
2019
Great Lakes Institute of Management
2017
The University of Adelaide
2015
The University of Sydney
2008
University of Oxford
2000-2007
University of Edinburgh
1996-2002
Andover Eye Associates
1955
Carboxymethyl cellulose (CMC), in solution and adsorbed on the surface of talc, has been studied with ATR FTIR spectroscopy as a function pH. The spectra enable calculation extent ionization polymer (due to protonation deprotonation carboxyl group) at various pH values, yielding value 3.50 for pKapp1/2 (pH which half all groups are ionized) simple electrolyte 3.37 solutions containing magnesium ions (3.33 × 10−4 M). layer reveal that CMC interacts talc through chemical complexation...
Silica has been frequently studied using infrared and Raman spectroscopy due to its importance in many practical contexts where surface chemistry plays a vital role. The majority of these studies have utilized chemical-vapor-deposited films vacuo after high-temperature calcination. However, room-temperature hydration dehydration thin silica particle not well characterized spite the such as substrates for polymer surfactant adsorption. present study ATR-IR exposed varying humidity clearly...
Abstract While shear emulsification is a well understood industrial process, geometrical confinement in microfluidic systems introduces fascinating complexity, so far prohibiting complete understanding of droplet formation. The size confined droplets controlled by the ratio between and capillary forces when both are same order, regime known as jetting, while being surprisingly insensitive to this orders magnitude smaller than forces, squeezing. Here, we reveal that further reduction...
Abstract An antimicrobial peptide, nisin Z, was embedded within polyelectrolyte multilayers (PEMs) composed of natural polysaccharides in order to explore the potential forming a multilayer with properties. Using attenuated total reflection Fourier transform infrared spectroscopy (ATR FTIR), formation carrageenan/chitosan and inclusion Z two different configurations investigated. Approximately 0.89 µg cm −2 contained 4.5 bilayer film. The properties these films were also peptide containing...
Hypothesis: Naturally extracted polysaccharides, such as guar gum, are promising candidates for environmentally friendly flotation reagents. It is hypothesized that the kinetics of collision sub- to millimeter gas bubbles with a hydrophobic graphite surface, and stability thin liquid film formed between bubble surface affected by an adsorbed layer gum. Experiments: A combination gravimetric (quartz crystal microbalance dissipation) imaging (atomic force microscopy) techniques was used...
We present strong evidence for the oxidation of conjugated polymers in formation polymer dots (CPdots) using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Although recent studies show that folding chain into a compact 3D structure is involved these nanoparticles, process by which intrinsically hydrophobic nanoscale particles circumvent aggregation water still not well understood. Zeta potential results have negatively charged surface at neutral pH, with zeta...
The velocity of bubbles rising in pure liquids is affected by the boundary conditions at liquid–air interface, with fastest when bubble surface fully mobile. presence even very small amounts surface-active molecules causes tangential immobility interface and subsequently results slower rise velocity. existing literature on velocities air high-purity water does not provide a conclusive picture whether or water–air immobile, most discrepancies reported for bubbles. This paper presents first...
Metal-organic frameworks (MOFs) with ratiometric sensing properties are desirable for many applications due to their intrinsic self-calibration. We report the re-assessment of a MOF, originally reported as containing europium(III) and 2-hydroxyterephtalic acid, having fluorescent iron(III) properties. Synchrotron single-crystal X-ray diffraction proton nuclear magnetic resonance (1H NMR) spectroscopy revealed that MOF is composed 2-methoxyterephthalate, not 2-hydroxyterephthalate reported....
A new approach for the attachment of vertically-aligned shortened carbon nanotube architectures to a silicon (100) substrate by chemical anchoring directly surface has been demonstrated first time. The ordered assembly single-walled nanotubes (SWCNTs) was accomplished hydroxylating followed condensation reaction with carboxylic acid functionalised SWCNTs. This nanostructure characterised X-ray photoelectron, Raman and Fourier transform infrared (FTIR) spectroscopy as well scanning electron...
Despite the existence of many single ion sorption studies on iron and aluminum oxides, fewer have been reported that describe cosorption reactions. In this work, we present an in situ ATR FTIR study synergistic adsorption sulfate (SO4) copper (Cu) goethite, which is representative minerals ions mine wastes, acid soils, other industrial agricultural settings. Sulfate was studied as a function varying pH, increasing concentration absence presence Cu. The Cu solution had complex effect ability...