Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13307
Title: Modified Titanium Dioxide (TiO2) photocatalysts for the degradation of organic pollutants in wastewater
Authors: ZHOU JINKAI
Keywords: modified titanium dioxide, degradation of organic pollutants, visible light irradiation, Taylor Vortex photoreactor
Issue Date: 15-Aug-2007
Source: ZHOU JINKAI (2007-08-15). Modified Titanium Dioxide (TiO2) photocatalysts for the degradation of organic pollutants in wastewater. ScholarBank@NUS Repository.
Abstract: In this thesis work, several methods were used to modify titanium dioxide (TiO2), a photocatalyst which is active under ultra-violet (UV) light, with a principal objective of lowering its bandgap to effectively use visible light energy. The photocatalytic degradation properties of the modified TiO2 catalysts were investigated. V-ion-implanted TiO2 pellets and films, which were respectively prepared by the ion implantation and ion cluster beam methods, exhibited a high photoactivity under visible light irradiation. Flower-like F-doped TiO2 hollow microspheres were also prepared using a one-pot hydrothermal synthesis method. The spherical TiO2 photocatalyst displayed a high photoactivity for the degradation of methyl blue (MB) under visible light. In addition, Bi12TiO20, a Bi-containing Ti-based perovskite-type photocatalyst was prepared using a solid-state reaction method and its photodegradation of methanol under visible light irradiation was investigated. Furthermore, a Taylor Vortex photoreactor for the degradation of organic pollutants was simulated using a commercial software, FLUENTA?.
URI: http://scholarbank.nus.edu.sg/handle/10635/13307
Appears in Collections:Ph.D Theses (Open)

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