Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/119268
Title: DEVELOPMENT OF BISMUTH BASED VISIBLE-LIGHT-DRIVEN PHOTOCATALYSTS FOR THE DEGRADATION OF ORGANIC POLLUTANTS
Authors: HAN AIJUAN
Keywords: photocatalyst, bismuth, visible light, heterojunction, degradation, organic pollutant
Issue Date: 7-Aug-2014
Citation: HAN AIJUAN (2014-08-07). DEVELOPMENT OF BISMUTH BASED VISIBLE-LIGHT-DRIVEN PHOTOCATALYSTS FOR THE DEGRADATION OF ORGANIC POLLUTANTS. ScholarBank@NUS Repository.
Abstract: Organic pollutants becomes a pervasive threat with the step forward of human beings. Photocatalysis is an effective method for the degradation of organics. Since visible light is much more abundant in the solar spectrum (ca. 46%) than UV light, visible-light-driven photocatalysts have received considerable attentions. Most bismuth compounds are relatively non-toxic and easy to handle, therefore the object in this thesis is to develop bismuth based visible-light-driven photocatalyst. Heterojunctions are an effective way to develop visible-light-driven photocatalyst. We investigated on Bi2O3/BiOCl, Bi2O3/BiOBr, NaBiO3/BiOBr, and Bi7O9I3/a-Bi5O7I heterojunctioned composites and their photocatalytic activities towards different organic pollutants, such as Rhodamine B and p-cresol. Active species studies were conducted to gain some insight into mechanism. Different crystal facets of a single-crystalline photocatalyst usually possess distinctive photocatalytic activities. We also investigated on the BiOI with different dominant exposed facet to get inside of the relationship between surface properties and photocatalytic activities.
URI: http://scholarbank.nus.edu.sg/handle/10635/119268
Appears in Collections:Ph.D Theses (Open)

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