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Received January 26, 2012
Accepted July 19, 2012
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Photocatalytic effects of plasma-heated TiO2-x particles under visible light irradiation
Department of Chemical and Biomolecular Engineering, University of Yonsei, 262, Seongsan-ro, Seodaemun-gu, Seoul 120-749, Korea 1Department of Chemical Engineering, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
Korean Journal of Chemical Engineering, January 2013, 30(1), 62-66(5), 10.1007/s11814-012-0116-y
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Abstract
The photocatalytic characteristics of partially reduced TiO2 (TiO2-x) by plasma treatment and plasma-heated treatment were investigated in the visible-light region. For the visible-light photocatalytic activity of TiO2-x, plasmaheated treatment shows stronger than plasma treatment significantly. The TiO2-x by plasma-heated treatment shows broader red-shifted absorption bands than one by plasma treatment in the visible-light region. The surface color of TiO2-x_x000D_
by plasma treatment and plasma-heated treatment changed from white to sky blue, and to navy, respectively. After exposure to air, the surface color of TiO2-x changed from sky blue to white for plasma treatment and from navy to beige for plasma-heated treatment.
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References
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