Browsing by Author "Dept. of Chemistry"
Now showing items 21-40 of 85
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Development of a gas chromatographic technique for the analysis of some groundwater contaminants from fuel leaks and its application in a site-specific study
Philander, Ghouwaa (University of the Western Cape, 2009)This study focuses on the development of a Direct Aqueous Injection Gas Chromatographic method with Flame Ionization Detection (DAI-GC/FID) for the analysis of MTBE and TBA. The analytical method was then applied in a site ... -
Development of amperometric biosensor with cyclopentadienylruthenium (II) thiolato schiff base self-assembled monolayer (SAM) on gold
Ticha, Lawrence Awa (University of the Western Cape, 2007)A novel cyclopentadienylruthenium(II) thiolato Schiff base, [Ru(SC6H4NC(H)C6H4OCH2CH2SMe)(η5-C2H5]2 was synthesized and deposited as a selfassembled monolayer (SAM) on a gold electrode. Effective electronic communication ... -
The development of appropriate brine electrolysers for disinfection of rural water supplies
Siguba, Maxhobandile (University of the Western Cape, 2005)A comparative study of electrolysers using different anodic materials for the electrolysis of brine (sodium chloride) for the production of sodium hypochlorite as a source of available chlorine for disinfection of rural ... -
Development of electrochemical sensors containing bimerallic silver and gold nanoparticles
Mailu, Stephen Nzioki (University of the Western Cape, 2010)Polyaromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants that have been shown to be teratogenic, mutagenic and carcinogenic and pose serious threats to the health of aquatic and human life. Several methods ... -
Development of electrochemical ZnSe Quantam dots biosensors for low-level detection of 17β-Estradiol estrogenic endocrine disrupting compound
Jijana, Abongile Nwabisa (University of the Western Cape, 2010)The main thesis hub was on development of two electrochemical biosensors for the determination of 17β-estradiol-estradiol: an estrogenic endocrine disrupting compound. Endocronology have significantly shown that the endocrine ... -
The development of inorganic and organic/inorganic membranes for DMFC application
Mokrani, Touhami (University of the Western Cape, 2004)A fuel cell is an energy device that converts chemical energy to electrical energy. Low temperature fuel cells, namely the hydrogen fuel cell and the direct methanol fuel cell are preferred amongst other fuel cell types ... -
Development of polyaniline nanotube electrocatalysts and sesor devices for phenolic-pollutants
Klink, Michael John (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 ... -
Electrochemical characterization of nanostructured SnO2 and TiO2 for potential application as dielectric materials in sulfonated-polyaniline based supercapacitors
Ngqongwa, Lundi Vincent (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
Gcilitshana, Oko Unathi (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 dynamics of cytochrome P450 (2D6) biosensors for selective serotonin re-uptake inhibitors (SSRIs)
Ngece, Rachel Fanelwa (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 energy conversion using metal hydrides hydrogen storage materials
Jonas, Ncumisa Prudence (University of the Western Cape, 2010)Metal hydrides hydrogen storage materials have the ability to reversibly absorb and release large amounts of hydrogen at low temperature and pressure. In this study, metal hydride materials employed as negative electrodes ... -
Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
Arotiba, Omotayo Ademola (University of the Western Cape, 2008)In this thesis, I present the electrochemical studies of three dendrimeric polypropylene imine (PPI) nanomaterials and their applications as a platform in the development of a novel label free DNA nanobiosensor based on ... -
Electrochemical investigation of platinum nanoparticles supported on carbon nanotubes as cathode electrocatalysts for direct methanol fuel cell
Ntlauzana, Asanda (University of the Western Cape, 2010)The particles of the Pt metal were well dispersed on carbon nanotubes when EG was used and in isopropanol poor dispersion was observed and no further investigation was done on them. The platinum wt% on the supports observed ... -
Electrochemical studies of monosubstituted squarate ligands and its transition metal and lanthanide complexes
Mohamed, Nuralli (University of the Western Cape, 2008)The study introduces and puts forward Sector Policing as a model to expand community Policing and to broaden the scope of crime prevention. It also demonstrates how Sector Policing can be utilised to decentralise policing ... -
The electrogeneration of hydroxyl radicals for water disinfection
Mangombo, Zelo (University of the Western Cape, 2006)This study has shown that OHË radicals can be generated in an Fe/O2 cell from the electrode products via Fenton’s reaction and used for water disinfection. The cell system in which the experiments were carried out ... -
Electrolytic determination of phthalates organic pollutants with n nostructured titanium and iron oxides sensors
Matinise, Nolubabalo (University of the Western Cape, 2010)This work reports the chemical synthesis, characterisation and electrochemical application of titanium dioxide (TiO2) and iron oxide (Fe2O3) nanoparticles in the determination of phthalates. The other part of this work ... -
Evaluation of the leachate chemistry and contaminants attenuation in acid mine drainage by fly ash and its derivatives
Gitari, Wilson Mugera (University of the Western Cape, 2006)The mining industry in South Africa has a huge potential to impact negatively on the environment. Negative impacts include generation of reactive tailings and acid mine drainage (AMD). AMD is highly acidic (pH 2-4), ... -
The extraction, purification and evaluation of compounds from the leaves of Leonotis Leonorus for anticonvulsant activity
Muhizi, Theoneste (University of the Western Cape, 2002)The aim of this study is to isolate and evaluate the anticonvulsant components from the leaves of Leonotis leonorus (L) R.aR. and to see if there is any change in activity with the origin of the plant material and I or the ... -
Fabrication and kinetic modeling of cytochrome P4502D6 amperometric biosensors for serotonin reuptake inhibitors
Mathebe, Ntlatseng Gretta Rhoda (University of the Western Cape, 2005)An amperometric biosensor was prepared by in situ deposition of cytochrome P4502D6 (CYP2D6, P4502D6) enzyme on a polyaniline (PANI)-doped glassy carbon electrode. The PANI film was electrochemically deposited on the electrode ... -
Frequency and voltage-modulated electrochemical aflatoxin B1 immunosensor systems prepared on electroactive organic polymer platforms
Owino, Joseph Hasael Odero (University of the Western Cape, 2008)In the presented work, immunosensors for detection of Aflatoxin B1 based on different immobilization platforms were studied. Synthesis of an electroactive hydrogel was also carried out. Aflatoxins are a group of mycotoxins ...