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|Title:||FABRICATED Bi2O3/TiO2 HETEROJUNCTION NANOCOMPOSITES FOR THE DEGRADATION OF REVERSE OSMOSIS CONCENTRATE||Authors:||XIANG JIAO||Keywords:||Photocatalysis,wastewater treatment,RO concentrate,Bi2O3/TiO2 heterojunction nanocomposites,photocatalytic activity||Issue Date:||21-Aug-2015||Citation:||XIANG JIAO (2015-08-21). FABRICATED Bi2O3/TiO2 HETEROJUNCTION NANOCOMPOSITES FOR THE DEGRADATION OF REVERSE OSMOSIS CONCENTRATE. ScholarBank@NUS Repository.||Abstract:||As the reverse osmosis technology is widely applied in water desalination around the world, it is urgent to find an environmental friendly and economical way to dispose this industry by-product, namely RO concentrates. In this study, a series of Bi2O3/TiO2 heterojunction nanocomposites were synthesized successfully: TiO2, Bi2O3, Bi2O3/TiO2 (Bi-Ti at different atomic ratios) were synthesized through direct hydrolysis and hydrothermal method. We made the mechanistic studies of the catalysts we fabricated.We also Studied the photo-catalytic activity of the synthesized photo-catalysts, evaluated the photo-catalytic activities of these catalysts for degradation of RO concentrate (ROC) under visible light and UV light, and made TOC analysis, Fluorescence spectroscopy, UV-Vis adsorption spectroscopy. Our results show that some of the Bi2O3/TiO2 heterojunction nanocomposites catalysts we synthesised to facilitate ROC degradation is environmental friendly and has better efficiency. However more research needs to be done to understand the mechanism to improve the efficiency.||URI:||http://scholarbank.nus.edu.sg/handle/10635/121955|
|Appears in Collections:||Master's Theses (Open)|
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