Preparation of photocatalytic TiO₂ nanoparticles immobilized on carbon nanofibres for water purification

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dc.contributor.advisorTichagwa, Len
dc.contributor.advisorGreyling, Cen
dc.contributor.authorNyamukamba, Pardonen
dc.date.accessioned2026-08-12T23:53:32Z
dc.date.available2026-08-12T23:53:32Z
dc.date.issued2011en
dc.description.abstractTitanium dioxide nanoparticles were prepared using the sol-gel process. The effect of temperature and precursor concentration on particle size was investigated. The optimum conditions were then used to prepare carbon and nitrogen doped titanium dioxide (TiO2) nanoparticles. Doping was done to reduce band gap of the nanoparticles in order to utilize visible light in the photocatalytic degradation of organic compounds. A significant shift of the absorption edge to a longer wavelength (lower energy) from 420 nm to 456 nm and 420 nm to 428 nm was observed for the carbon doped and nitrogen doped TiO2 respectively. In this study, the prepared TiO2 photocatalyst was immobilized on carbon nanofibres to allow isolation and reuse of catalyst. The photocatalytic activity of the catalyst was tested using methyl orange as a model pollutant and was based on the decolourization of the dye as it was degraded. The doped TiO2 exhibited higher photocatalytic activity than the undoped TiO2. The materials prepared were characterized by XRD, TEM, SEM, FT-IR, DSC and TGA while the doped TiO2 was characterized by XPS, ESR and Raman Spectroscopy.en
dc.format149 leaves; 30 cmen
dc.formatpdfen
dc.identifier.citationNyamukamba, Pardon. 2011en
dc.identifier.othervital:11330en
dc.identifier.otherhttp://hdl.handle.net/10353/367en
dc.identifier.otherWater -- Purificationen
dc.identifier.otherTitanium alloys -- Industrial applicationsen
dc.identifier.otherTitaniumen
dc.identifier.otherNanoparticlesen
dc.identifier.otherDrinking water -- Purificationen
dc.identifier.otherDrinking water -- Contaminationen
dc.identifier.urihttp://hdl.handle.net/20.500.11837/4571
dc.language.isoEnglishen
dc.publisherUniversity of Fort Hareen
dc.publisherFaculty of Science & Agricultureen
dc.rightsUniversity of Fort Hareen
dc.subjectWater -- Purificationen
dc.subjectTitanium alloys -- Industrial applicationsen
dc.subjectTitaniumen
dc.subjectNanoparticlesen
dc.subjectDrinking water -- Purificationen
dc.subjectDrinking water -- Contaminationen
dc.titlePreparation of photocatalytic TiO₂ nanoparticles immobilized on carbon nanofibres for water purificationen
dc.title.alternativePreparation of photocatalytic TiO₂ nanoparticles immobilized on carbon nanofibres for water purificationen
dc.typeThesisen
dc.typeMastersen
dc.typeMSc (Chemistry)en

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