Reactions of Coordinated Dinitrogen. The program will develop novel metal-based catalysts and reagents that will transform nitrogen gas into ammonia and other nitrogen-containing compounds (nitrogen fixation). This fundamental chemical transformation underpins major chemical industries and this new approach using organometallic catalysts will significantly improve the efficiency of ammonia production and reduce the energy and harsh reaction conditions currently required. This program will desi ....Reactions of Coordinated Dinitrogen. The program will develop novel metal-based catalysts and reagents that will transform nitrogen gas into ammonia and other nitrogen-containing compounds (nitrogen fixation). This fundamental chemical transformation underpins major chemical industries and this new approach using organometallic catalysts will significantly improve the efficiency of ammonia production and reduce the energy and harsh reaction conditions currently required. This program will design catalysts with multiple complementary metal centres tailored to bind and activate nitrogen gas to facilitate its reaction with hydrogen or other reagents.Read moreRead less
From Nanostructured Functional Materials to Sustainable Processes. Nano-structured functional materials in the areas of catalysis and reversible hydrogen storage will be developed with the view to arrive at (a) sustainable processes and (b) the adoption of hydrogen as an energy carrier. These aims are driven by a global need to change the industrial paradigm due to environmental pressures and limited resources, particularly in terms of energy. Expected outcomes are new avenues to process intens ....From Nanostructured Functional Materials to Sustainable Processes. Nano-structured functional materials in the areas of catalysis and reversible hydrogen storage will be developed with the view to arrive at (a) sustainable processes and (b) the adoption of hydrogen as an energy carrier. These aims are driven by a global need to change the industrial paradigm due to environmental pressures and limited resources, particularly in terms of energy. Expected outcomes are new avenues to process intensification, leading to novel commercial routes, and a hydrogen storage technology which has the potential to play a strong part in the global economy.Read moreRead less
Metallographitic Discs as New Materials. Materials science plays a pivotal role in determining and improving economic performance and quality of life. While application of materials is the ultimate goal, basic understanding of a material's behaviour from the atomic/nano-level to macrostructural level is also of critical importance. This project builds upon the recent success of soluble, well-defined carbon discs in molecular electronics, through the preparation and study of metal-containing deri ....Metallographitic Discs as New Materials. Materials science plays a pivotal role in determining and improving economic performance and quality of life. While application of materials is the ultimate goal, basic understanding of a material's behaviour from the atomic/nano-level to macrostructural level is also of critical importance. This project builds upon the recent success of soluble, well-defined carbon discs in molecular electronics, through the preparation and study of metal-containing derivatives as new advanced crystalline and liquid crystalline materials. The possibility of enhanced electronic, optical and/or magnetic properties, along with good processability, make these materials potential candidates as the active component of future, technologically important devices.Read moreRead less
Photodegradation of Oestrogenic Pollutants in the aquatic environment. Recent media attention has highlighted the problem of oestrogenic pollutants in the aquatic environment. This research proposes to investigate Photocatalysis of oestrogens in water using the magnetic titanium dioxide particles developed at the Centre for Particle and Catalyst Technologies in the University of New South Wales, Sydney. The natural oestrogens 17b-oestradiol, oestrone and oestriol and the synthetic oestrogen 17a- ....Photodegradation of Oestrogenic Pollutants in the aquatic environment. Recent media attention has highlighted the problem of oestrogenic pollutants in the aquatic environment. This research proposes to investigate Photocatalysis of oestrogens in water using the magnetic titanium dioxide particles developed at the Centre for Particle and Catalyst Technologies in the University of New South Wales, Sydney. The natural oestrogens 17b-oestradiol, oestrone and oestriol and the synthetic oestrogen 17a-ethynyl oestradiol (the main constituent of the contraceptive pill) will be investigated in the photocatalytic system. Degradation will be monitored using various analytical techniques. Other commercial catalysts will also be investigated and compared with the magnetic catalyst and previous catalysts tested.Read moreRead less
Resolving Critical Knowledge Gaps Relating to Light and Free-Radical Mediated Transformations of Iron and Copper in Oxic Natural Waters. Understanding the transformation kinetics of iron and copper species is critical to maintaining Australia's water resources since i) iron transformations are key to generation and transport of acid in Australia's coastal environment; ii) growth of toxic algae are stimulated by dissolution of iron-rich sediments with subsequent release of nutrients phosphorus an ....Resolving Critical Knowledge Gaps Relating to Light and Free-Radical Mediated Transformations of Iron and Copper in Oxic Natural Waters. Understanding the transformation kinetics of iron and copper species is critical to maintaining Australia's water resources since i) iron transformations are key to generation and transport of acid in Australia's coastal environment; ii) growth of toxic algae are stimulated by dissolution of iron-rich sediments with subsequent release of nutrients phosphorus and iron, and iii) algal toxicity is related to iron and copper nutrition and interplay of these metals with oxygen. Additionally, global cycles of carbon, phosphorus and nitrogen are influenced by iron and copper interactions with light and oxygen. Improved understanding of these processes should lead to an awareness of how to prevent these problems and, if they occur, approaches to their mitigation.Read moreRead less
Single walled carbon nanotubes of one stereochemistry - material for the oncoming carbon age. Carbon nanotubes are finding application in nanotechnology. However currently they are prepared as a mixture of zig-zag, chiral and armchair isomers. Their properties could be improved if they could be prepared with one stereochemistry. The approach here is to use a nanocrystallisation and thermal maturation process involving stereo controlling additives. The new carbons are expected to have outstandin ....Single walled carbon nanotubes of one stereochemistry - material for the oncoming carbon age. Carbon nanotubes are finding application in nanotechnology. However currently they are prepared as a mixture of zig-zag, chiral and armchair isomers. Their properties could be improved if they could be prepared with one stereochemistry. The approach here is to use a nanocrystallisation and thermal maturation process involving stereo controlling additives. The new carbons are expected to have outstanding flexibility and strength and novel thermal and electrical properties. The new products could give Australia a lead in new battery, hydrogen storage, flat screen technology and nanoelectronics.Read moreRead less
Physico-chemical Controls on Growth, Toxicity and Succession of Microcystis and Anabaena Species in Sydney Water Supply Reservoirs. Insight into the forms of nutrients that are most readily assimilated by Microcystis and Anabaena species prevalent in Lake Burragorang and other Sydney water supply reservoirs will assist in determining the key drivers to occurrence of blooms of these organisms, particularly when combined with an understanding of the spatial and temporal distribution of the forms o ....Physico-chemical Controls on Growth, Toxicity and Succession of Microcystis and Anabaena Species in Sydney Water Supply Reservoirs. Insight into the forms of nutrients that are most readily assimilated by Microcystis and Anabaena species prevalent in Lake Burragorang and other Sydney water supply reservoirs will assist in determining the key drivers to occurrence of blooms of these organisms, particularly when combined with an understanding of the spatial and temporal distribution of the forms of nutrients, the dynamics of transformation between these various forms and the key parameters of light and temperature. In addition, the particular forms in which nutrients are acquired may influence the extent of toxin production. Thus, the findings of the project will also assist in elucidating the conditions under which toxin generation is expected.Read moreRead less
Metal emissions from petrol and the future health of children. We aim to determine the contribution of manganese, lead, and other metal emissions from motor vehicles to the environment and exposure of
children. Manganese is of potential concern because of (a) its recent
introduction as methylcyclopentadienyl manganese tricarbonyl (MMT) in
Australia as a fuel additive to replace lead and (b) the lack of information on environmental levels, exposure, and long-term health effects, especially in ....Metal emissions from petrol and the future health of children. We aim to determine the contribution of manganese, lead, and other metal emissions from motor vehicles to the environment and exposure of
children. Manganese is of potential concern because of (a) its recent
introduction as methylcyclopentadienyl manganese tricarbonyl (MMT) in
Australia as a fuel additive to replace lead and (b) the lack of information on environmental levels, exposure, and long-term health effects, especially in children. This project conforms with a Designated National Research Priority and is a collaborative project bringing together researchers from academia, CSIRO, industry, and the US.
Environmental Protection Agency.
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Application of nano-sized zero valent iron particles to agrochemicals degradation through Fenton's reagent oxidation. Zero-valent iron (ZVI) has been successfully used for the degradation of a wide range of contaminant organics in groundwaters in recent years. The rates of degradation however are relatively slow and render the process unsuitable for situations where there are limits on the time available for reaction. An innovative approach is to couple the dissolution of ZVI with hydrogen perox ....Application of nano-sized zero valent iron particles to agrochemicals degradation through Fenton's reagent oxidation. Zero-valent iron (ZVI) has been successfully used for the degradation of a wide range of contaminant organics in groundwaters in recent years. The rates of degradation however are relatively slow and render the process unsuitable for situations where there are limits on the time available for reaction. An innovative approach is to couple the dissolution of ZVI with hydrogen peroxide addition thereby generating hydroxyl radicals as a result of Fenton's reagent reactions. The efficacy of using this innovative ZVI/H2O2 process to degrade herbicides and pesticides of concern to Australian agriculture is investigated at laboratory and field scale in this project.Read moreRead less