Philosophiae Doctor - PhD (Chemistry): Recent submissions
Now showing items 21-40 of 133
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Dehydrogenation of alkanes using sulfided metal catalysts
(University of Western Cape, 2021)Light olefins are some of the main raw materials for the petrochemical industry. With the rise in oil prices and increasing demand for olefins, there is an increasing interest in finding cheaper alternatives for processes ... -
Electrochemical responses of novel preferentially oriented platinum (100) nanoalloys for ammonia and hydrazine catalysis
(University of the Western Cape, 2013)Ammonia has attracted attention as a possible fuel for direct fuel cells since it is easy to handle under low pressure, costs only slightly higher than methanol and can easily be cracked down into hydrogen and nitrogen. ... -
Electrochemiluminescence of novel polyanilino-rutheniumbipyridyl-imidazo phenanthroline and carboxy-difluoroboradiazaindacene luminophores
(University of the Western Cape, 2015)Electrochemiluminiscence, (ECL), is an electrochemically-induced process that leads to the generation of measurable luminescent signals at the electrode surface. The luminescent signals occur when electrochemically generated ... -
Re-use of South African fly ash for CO2 capture and brine remediation.
(University of the Western Cape, 2013)Coal combustion accounts for 95% of electricity generation in South Africa while globally coal combustion for energy generation stands at 42%. It has been predicted that coal utilization for energy generation will continue ... -
Impedimetric and electrode kinetic dynamics of DNA aptamer nanobiosensors for estrogeneous endocrine disruptors
(University of the Western Cape, 2011)In this work, DNA aptamer biosensor systems were developed for the detection of l7p-estradiol - an estrogeneous endocrine disrupting chemical (EDC). Endocrine disrupting chemicals are group of compounds that impact negatively ... -
Development of heterostructured tin oxide nanocatalysts for the synthesis of bio-based maleic acid
(University of Western Cape, 2021)Maleic acid (MA) is a key intermediate for the synthesis of polyester resins, surface coatings, lubricant additives, plasticizers, copolymers, pharmaceuticals and agricultural chemicals. The current industrial production ... -
Spectroelectrochemical determination of the antioxidant properties of carpobrotus mellei and carpobrotus quadrifidus natural products
(University of the Western Cape, 2009)South African Carpobrotus species have been found to contain hydrolysable tannins, various tlavonoids e.g. rutin and hyperoside, phytosterols and aromatic acids which have a diverse range of pharmacological properties ... -
Fabrication of type-I indium-based near-infrared emitting quantum dots for biological imaging applications
(University of the Western Cape, 2013)Semiconductor nanocrystals or quantum dots (QDs) are fluorescent nanometer-sized particles which have physical dimensions that are smaller than the excitonic Bohr radius, large surface area-to-volume ratios, broad ... -
Development of a bipolar nickel-iron battery prototype for energy storage
(University of Western Cape, 2021)Energy storage systems represent a viable option to integrate renewable energy sources into the grid network. Multiple energy storage technologies are available such as mechanical, electrical, thermal, and electrochemical ... -
Identification and quantification of chemicals of emerging concern (persistent organic and inorganic pollutants) in some selected marine environments of cape town, South Africa
(University of the Western Cape, 2020)The increasing evidence of chemicals of emerging concern (CECs) in water bodies is causing major concern around the world because of their toxicological effects upon humans and aquatic organisms. The release of wastewater ... -
Isolation and characterization of natural products from selected Rhus species
(University of Western Cape, 2020)Searsia is the more recent name for the genus (Rhus) that contains over 250 individual species of flowering plants in the family Anacardiaceae. Research conducted on Searsia extracts to date indicates a promising potential ... -
Fabrication of metal-organic frameworks with application-specific properties for hydrogen storage application
(University of Western Cape, 2019)The application of porous materials into industrial hydrogen (H2) storage systems is based on their use in combination with high-pressure cylinders. The processing of metal-organic frameworks (MOF) powders into shaped ... -
Sustainable synthesis of BEA zeolite from fly ash-based amorphous silica
(University of Western Cape, 2019)Power generation in South Africa depends majorly on the combustion of coal and the increasing demand for energy due to industrialisation and population growth signifies the continuous consumption of coal. During this ... -
Development of nanostructured electrocatalysts using electrochemical atomic layer deposition technique for the direct liquid fuel cells By
(University of Western Cape, 2020)The depletion of fossil fuel resources such as coal and the concern of climatic change arising from the emission of greenhouse gases (GHG) and global warming [1] lead to the identification of the 'hydrogen economy' as one ... -
Fabrication of nanomaterials from biomass for adsorption and antimicrobial applications
(University of the Western Cape, 2020)The Black soldier fly (BSF) is an environmentally friendly and sustainable insect utilised in the decomposition of organic waste. This is due to its voracious consumption capability, disruptive functions and economic ... -
Novel Nanostructure Electrocatalysts for Oxygen Reduction and Hydrogen Evolution Reactions
(University of the Western Cape, 2019)The widespread use of fossil energy has been most convenient to the world, while they also cause environmental pollution and global warming. Therefore, it is necessary to develop clean and renewable energy sources, among ... -
Coal fly ash and acid mine drainage based heterogeneous Fe catalysts Friedel-Crafts alkylation reaction
(University of Western Cape, 2020)The catalytic support materials used in the present study are zeolite HBEA and MCM-41. These high silica zeolites were synthesised from coal fly ash (CFA) waste via a novel approach that involved a fusion step, acid assisted ... -
Chemical isolation and electro-chemical characterization of antidiabetic compounds from selected South African lamiaceae plant species
(University of the Western Cape, 2020)Diabetes mellitus (DM), being one of the most common metabolic disorders with an elevated morbidity and mortality rate around the world. It is characterised by deficiency in insulin secretion or degradation of secreted ... -
Graphol and vanadia-linkedzink-doped lithium manganese silicate nanoarchitectonic platforms for supercapatteries
(University of Western cape, 2020)Energy storage technologies are rapidly being developed due to the increased awareness of global warming and growing reliance of society on renewable energy sources. Among various electrochemical energy storage technologies, ... -
Electrochemical cytochrome P450 enzymatic biosensors for the determination of the reactivity of TB drugs
(University of Western Cape, 2020)Tuberculosis (TB) remains a global epidemic despite the fact that treatment has been available since the 1950’s. This disease is highly contagious and spreads via transmission of the Mycobacterium Tuberculosis (MTB) tubercle ...