Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/32383
Title: The development and study of titanium dioxide based buoyant composite photocatalyts for improved applications in photocatalytic degradation of organic pollutants in aqueous solutions
Authors: HAN HUI
Keywords: buoyant, photocatalysis, TiO2,methyl orange, waste water, solar light
Issue Date: 15-Jun-2011
Source: HAN HUI (2011-06-15). The development and study of titanium dioxide based buoyant composite photocatalyts for improved applications in photocatalytic degradation of organic pollutants in aqueous solutions. ScholarBank@NUS Repository.
Abstract: A novel buoyant composite photocatalyst was developed by immobilizing modified TiO2 nanoparticles on a polypropylene substrate. The prepared composite photocatalyst was found not only to be active under UV but also have greatly enhanced visible light activity. A low temperature hydrothermal method was used to obtain the desired buoyant composite photocatalyst. The loading rate of TiO2 nanoparticles on the substrate was improved and the effect of the TiO2 film thickness on the substrate on the photocatalytic reaction performance was examined. The results show that the developed buoyant composite photocatalyst can be used at the water/air interface to increase the light utilization efficiency and the developed buoyant composite photocatalyst can be effectively used for the degradation of persistent organic pollutants such as phenol or methyl orange dye in aqueous solutions. The performance of the composite photocatalysts may also be improved by adding an adsorbent component with TiO2 on the surface.
URI: http://scholarbank.nus.edu.sg/handle/10635/32383
Appears in Collections:Ph.D Theses (Open)

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