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Electrochemically Driven Molybdoenzyme Catalysis. Enzymes that catalyse oxidation and reduction reactions need to exchange electrons with their substrate and this supply of electrons needs to be sustained. Artificially reconstituted systems can be developed where the enzyme is coupled with an electrode and the current (electrons) exchanged during the reaction are measured directly. In this project we will reveal whether some unusual and unexplained electrochemical phenomena seen before are relat ....Electrochemically Driven Molybdoenzyme Catalysis. Enzymes that catalyse oxidation and reduction reactions need to exchange electrons with their substrate and this supply of electrons needs to be sustained. Artificially reconstituted systems can be developed where the enzyme is coupled with an electrode and the current (electrons) exchanged during the reaction are measured directly. In this project we will reveal whether some unusual and unexplained electrochemical phenomena seen before are related to the properties of the enzymes themselves or the ways in which their experiments have been conducted.Read moreRead less
The flotation of oxide minerals using hydroxamate collectors. Australian and world mineral resources are declining in quality as we exploit the richest sulfidic ore deposits. This is increasing our reliance on concentration and beneficiation processes to improve the economics of the selective recovery of minerals from lower grade and, increasingly, oxide or lateritic ore bodies. In addition, greater emphasis is being placed on our environmental stewardship and the need to remove hazardous mater ....The flotation of oxide minerals using hydroxamate collectors. Australian and world mineral resources are declining in quality as we exploit the richest sulfidic ore deposits. This is increasing our reliance on concentration and beneficiation processes to improve the economics of the selective recovery of minerals from lower grade and, increasingly, oxide or lateritic ore bodies. In addition, greater emphasis is being placed on our environmental stewardship and the need to remove hazardous material from the concentrate streams. This proposal will develop improved methods and techniques that will facilitate better, cleaner separations and recovery of the valuable oxide mineral components using Australian-developed flotation reagents.Read moreRead less
New Synthetic Routes to the Immobilisation of Mixed Valence Transition Metal Complexes on Conducting Metal Oxides. Highly coloured, electrochemically active transition metal dyes may find application electrochromic devices, where they may switch between contrasting coloured forms through a simple redox reaction. A prerequisite is that the dye be immobilised onto a solid conducting support whilst preserving the electrochemical and optical properties of the dye found in solution. This project tack ....New Synthetic Routes to the Immobilisation of Mixed Valence Transition Metal Complexes on Conducting Metal Oxides. Highly coloured, electrochemically active transition metal dyes may find application electrochromic devices, where they may switch between contrasting coloured forms through a simple redox reaction. A prerequisite is that the dye be immobilised onto a solid conducting support whilst preserving the electrochemical and optical properties of the dye found in solution. This project tackles this problem through a combination of organic and inorganic synthesis to develop new electrochromic dyes that may be attached to mesoporous titania.Read moreRead less