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Titanium hydrate nanoparticles for catalytic degradation of organic dyes

Yu Hua Cheng 1Zhong Chen 

1. Nanyang Technological University, Singapore, Singapore

Abstract

Recently, it is of increasing concern to find efficient solutions for the management of wastewater. In particular, much effort is channeled to the search of new materials that are capable of degrading harmful substances such as organic dyes present in wastewater. Photo-catalysts can degrade such organic dyes under suitable light irradiation. In this study, Titanium oxide hydrate was synthesized via low temperature hydrothermal route. The particles are mono-dispersed and average at 20 nm in size. The synthesized material was found to have broad absorption spectra in the visible light range as compared to the widely known commercial photo-catalyst, Degussa P25 which absorbs only in the Ultraviolet range. The catalytic activity of the synthesized powder and P25 were evaluated for degradation of organic dye; Methylene Blue under visible light. It was found that the rate of degradation using Titanium oxide hydrate was much faster than that of commercial P25. Importantly, the structure, morphology, as well as surface chemistry have also been explored to provide a comprehensive study of the photo-catalytic material.

 

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Presentation: Poster at E-MRS Fall Meeting 2008, Symposium D, by Yu Hua Cheng
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-09 12:08
Revised:   2009-06-07 00:48