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The toxicity of silver nanoparticles
(University of the Western Cape, 2012)
Unavailability and contamination of available water resources are major factors contributing to adverse health conditions worldwide. AgNPs present a potential strategy for water purification; however, their ability to ...
Cation-exchanged zeolites-A prepared from South African fly ash feedstock for CO2 adsorption
(University of the Western Cape, 2015)
In South Africa coal combustion constitutes up to 90 % of the country’s energy need. This coal combustion activity is known to contribute to the amount of about 40 % of the total CO2 atmospheric emissions worldwide that ...
Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies
(University of the Western Cape, 2015)
In the present study we report the synthesis and characterization of iron oxide magnetic nanoparticles doped with zinc in an attempt to enhance the magnetic properties. The nanoparticles were prepared via the co-precipitation ...
The role of aluminium content in the control of the morphology of fly ash based hierarchical zeolite X
(University of the Western Cape, 2015)
Coal is the main source of electricity in South Africa, the combustion of which produces a large amount of waste (coal fly ash) annually. The large-scale generation of coal fly ash places major strain on landfills and the ...
Some new bimetallic nickel and palladium complexes for catalysis applications
(University of the Western Cape, 2015)
This thesis reports on the syntheses of new bimetallic iminopyridyl nickel(II) and
palladium(II) complexes as catalyst precursors for ethylene ligomerization/polymerization. Tetrahydrophenyl-linked iminopyridyl ligands, ...
Graphene-modified pencil graphite bismuth-film electrodes for the determination of heavy metals in water samples using anodic stripping voltammetry
(University of the Western Cape, 2013)
Electrochemical platforms were developed based on pencil graphite electrodes (PGEs) modified with electrochemically deposited graphene (EG) sheets and Nafion-graphene (NG) nanocomposites in conjunction with an in situ ...
Synthesis and characterization of pyridyl/quinolyl imine ruthenium(II) and palladium (II) complexes in catalysis
(University of the Western Cape, 2015)
We report the successful syntheses of a family of tetradentate N-donor pyridyl and quinolyl-imine ligands N1,N2-bis((pyridin-2-yl)methylene)ethane-1,2-diamine (L1), N1,N3- bis(pyridin-2-ylmethylene)propane-1,3-diamine (L2), ...
Supercapacitor electrode materials based on nanostructured conducting polymers and metal oxides
(University of the Western Cape, 2013)
Supercapacitors are charge-storage devices. Compared to batteries, they have higher power density, more excellent reversibility and longer cycle life. Therefore, supercapacitors have played an increasingly important role ...
Electrochemical kinetics and sensing of conjugated dienes in acetonitrile
(University of the Western Cape, 2011)
This thesis focuses on the electroanalysis of some dienes (2-methyl-1.3-butadiene (MBD), tran-1.3-pentadiene (PD), 1.3-cyclohexadiene (CHD) and 3-cyclooctadiene (COD)) found in gasoline and the development of simple ...
Chemical, physical and morphological changes in weathered brine slurried coal fly ash
(University of the Western Cape, 2011)
Energy production from coal comes with an environmental cost because of the toxic waste produced during coal combustion such as coal ash and brine which are potential water and soil pollutants. Coal ash and brine contain ...