A5046169189- Metal Extraction and Bioleaching
- Minerals Flotation and Separation Techniques
- Mine drainage and remediation techniques
- Bauxite Residue and Utilization
- Extraction and Separation Processes
- Clay minerals and soil interactions
- X-ray Diffraction in Crystallography
- Electron and X-Ray Spectroscopy Techniques
- Iron oxide chemistry and applications
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- ZnO doping and properties
- Tailings Management and Properties
- Electronic and Structural Properties of Oxides
- Mineral Processing and Grinding
- Advanced X-ray Imaging Techniques
- Semiconductor materials and devices
- Copper-based nanomaterials and applications
- Corrosion Behavior and Inhibition
- TiO2 Photocatalysis and Solar Cells
- Pigment Synthesis and Properties
- Coagulation and Flocculation Studies
- Metal and Thin Film Mechanics
- Crystallization and Solubility Studies
University of South Australia
2009-2018
Australian Synchrotron
2008
King's College London
2006
The King's College
1999
King's College Hospital
1999
University of London
1999
Universidad de Londres
1999
University of Strathclyde
1990-1991
Abstract Quantitative chemical state X‐ray photoelectron spectroscopic analysis of mixed nickel metal, oxide, hydroxide and oxyhydroxide systems is challenging due to the complexity Ni 2p peak shapes resulting from multiplet splitting, shake‐up plasmon loss structures. Quantification states qualitative determination low concentrations Ni(III) species are demonstrated via an approach based on standard spectra quality reference samples (Ni, NiO, Ni(OH) 2 , NiOOH), subtraction these spectra,...
This paper reviews evidence for the assignments of components S 2p XPS spectra from sulphide mineral surfaces under different conditions preparation, oxidation and reaction. Evidence other techniques confirming assignment high-binding-energy to metal-deficient surfaces, polysulphides, elemental sulphur electronic defect structures is considered specific cases. Reliable 2p3/2 at 163.6–164.0 eV Sn0 can be confirmed by evaporative loss 295 K and/or observation S–S bonding x-ray absorption fine...
Bulk properties of the isostructural oxides MgO, NiO, and CoO have been calculated quantum chemically with periodic models compared experimental data from literature. Ab initio Hartree-Fock, gradient-corrected density-functional methods, hybrid approaches used for calculation lattice constants, heats atomization, electronic structures. General trends effects electron correlation treatment exchange on are observed. None standard methods considered provided results in agreement all properties....
The electronic properties of stoichiometric, defective, and aluminum-doped rutile $\mathrm{Ti}{\mathrm{O}}_{2}$ have been investigated theoretically with periodic quantum-chemical calculations. Theoretical results obtained the Perdew-Wang density functional method [Phys. Rev. B 45, 13244 (1992)] a functional-Hartree-Fock hybrid are compared. Occupied defect states observed in band gap due to presence oxygen vacancies, which is accord previous theoretical studies experimentally coloring. For...
Acid and metalliferous release occurring when sulfide (principally pyrite)-containing rock from mining activities natural environments is exposed to the elements acknowledged as a major environmental problem. drainage (ARD) management both challenging costly for operating legacy mine sites. Current technological solutions are expensive focused on treating ARD rather than preventing it at source. We describe here viable, practical mechanism reduced through formation of silicate-stabilized...