Browsing Department of Chemistry by Title
Now showing items 94-113 of 399
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Development of polyaniline nanotube electrocatalysts and sesor devices for phenolic-pollutants
(University of the Western Cape, 2007)As a source of life, water is one of the most precious commodities for all living organisms. Water resources are reported to be declining in numbers or the amount of water present and the existing onses are being polluted ... -
Development of Schiff base electrochemical sensors for the evaluation of polycyclic aromatic hydrocarbons in aqueous medium
(University of the Western Cape, 2017)A novel monomer (N,N'-Bis-(1H-pyrrol-2-ylmethylene)-benzene-1,2-diamine-BPPD) was derived from the condensation reaction between o-phenylenediamine and a pyrrole derivative. The monomer was polymerized electrochemically ... -
Durability studies of membrane electrode assemblies for high temperature polymer electrolyte membrane fuel cells
(University of the Western Cape, 2011)Polymer electrolyte membrane fuel cells (PEMFCs) among other fuel cells are considered the best candidate for commercialization of portable and transportation applications because of their high energy conversion and low ... -
The effect of flow field design on the degradation mechanisms and long term stability of HT-PEM fuel cell
(University of the Western Cape, 2018)Fuel cells are long term solution for global energy needs. In current fuel cell technologies, Proton Exchange Membrane (PEM) fuel cells are known for quick start-up and ease of operation compared to other types of fuel ... -
Effect of synthetic methods on the characteristics and performance of IrO2 catalysts
(University of the Western Cape, 2022)For many years fossil fuel has been the primary source of energy worldwide though, the environment is negatively affected because of the high carbon dioxide (CO2) emissions associated with the use of fossil fuels. Hydrogen ... -
The effects of capping agents on the synthesis of magnetic-luminescent Fe₃O₄ -InP/ZnSe nanocomposite material
(University of the Western Cape, 2015)Magnetic luminescent nanoparticles of an iron oxide (Fe₃O₄) superparamagnetic core and an indium phosphide/zinc selenide (InP/ZnSe) quantum dot shell are reported. The magnetic nanoparticles (MNP’s) and quantum dots (QD’s) ... -
Effluent water treatment utilising a combination of hydrodynamic shear and flotation technology for the specific application of wastewater from the oil and gas industry
(University of the Western Cape, 2022)Water plays an important role in the petrochemical production and refining processes. The wastewaters released by these processes are often rich in petroleum pollutants, that requires significant treatment prior to ... -
Electro chemiluminescence and organic electronics of derivatised poly(aniline sulphonic acid) light-emitting diodes
(University of the Western Cape, 2011)Electrochemiluminescence (EeL) is applied for industrial applications that have considerable potential, such as clinical diagnostic, analytical chemistry, and light-emitting devices, due to selectivity, sensitivity for ... -
Electro-analytical protocols for quantitative assessment of phenols in South African rooibos, green and black tea samples
(University of Western Cape, 2022)The worldwide tea market was estimated at almost 200 billion U.S. dollars in 2020. It is perceived to rise to 318 billion dollars by 2025. Tea has a long history of prominence around the world. Increases in tea production ... -
Electro-Luminescent and Photovoltaic Responses of poly (propylene imine) dendritic CuInSe2 (CIS) Quantum Dots
(University of the Western Cape, 2019)The development of renewable energy has attracted more attention due to the increasingly serious energy and environmental crisis in the world nowadays. Second generation photovoltaics based on thin films of binary semiconductor ... -
Electroanalysis of sars-cov-2 specific igg and igm antibodies at microfluidic paper-based devices
(University of the Western Cape, 2022)The Covid-19 pandemic has taken the world by storm. The infectious disease, SARS-CoV-2, was caused by a newly found virus of the corona family. With over 6 million deaths worldwide, it is evident that the SARS-CoV-2 virus ... -
Electrochemical actuation potential of diaminophenazine linked pyrrole derivatives
(2013)A novel monomer (Phenazine-2,3-diimino(pyrrole-2-yl)–PDP) derived from the condensation reaction between 2,3-diaminophenazine and a pyrrole derivative has been synthesized as a hinge molecule in the design of a zig-zag ... -
Electrochemical and optical modulation of selenide and telluride ternary alloy quantum dots genosensors
(University of the Western Cape, 2012)Electroanalytical and optical properties of nanoscale materials are very important for biosensing applications as well as for understanding the unique one-dimensional carrier transport mechanism. One-dimensional semiconductor ... -
Electrochemical characterization of nanostructured SnO2 and TiO2 for potential application as dielectric materials in sulfonated-polyaniline based supercapacitors
(University of the Western Cape, 2010)In this research project, nanostructured composites based on Tin dioxide (SnO2) and Titanium dioxide (TiO2) with poly-4-styrene sulfonic acid (PSSA) doped polyaniline (PANI) conducting polymer has been investigated based ... -
Electrochemical Characterization of Platinum based anode catalysts for Polymer Exchange Membrane Fuel Cell
(University of the Western Cape, 2008)In this study, the main objective was to investigate the tolerance of platinum based binary anode catalysts for CO poisoning from 10ppm up to1000ppm and to identify the best anode catalysts for PEMFCs that tolerates the ... -
Electrochemical characterization of platinum based catalysts for fuel cell applications
(University of the Western Cape, 2012)Fuel cells convert chemical energy from a fuel into electricity through chemical reaction with oxygen. This possesses some challenges like slow oxygen reduction reaction (ORR), overpotential, and methanol fuel cross over ... -
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 ... -
Electrochemical deposition of Graphene Oxide- metal nano-composite on Pencil-Graphite Electrode for the high sensitivity detection of Bisphenol A by Adsorptive Stripping Differential Pulse Voltammetry
(University of the Western Cape, 2018)Electrochemical platforms were developed based on pencil graphite electrodes (PGEs) modified electrochemically with reduced graphene oxide metal nanoparticles (ERGO–metalNPs) composite and used for the high-sensitivity ... -
Electrochemical dynamics of cytochrome P450 (2D6) biosensors for selective serotonin re-uptake inhibitors (SSRIs)
(University of the Western Cape, 2007)Selective serotonin re-uptake inhibitors (SSRIs) are a new class of antidepressants used mainly for the treatment of depression and other forms of related disorders. There are a number of side effects associated with these ... -
Electrochemical dynamics of cytochrome P450-3A4 isoenzyme biosensor for protease inhibitor antiretroviral drug
(2010)This thesis firstly reports on the development and characterization of reagent-less and cobalt(III) sepulchrate[Co(Sep)³⁺] mediated biosensor platforms (biosensor platform 1 and biosensor platform 2), with human recombinant ...