Photocatalytic oxidation of NOx by Pt-modified TiO2 under visible light irradiation

被引：70
作者：
Ishibai, Yoichi
Sato, Junya
Akita, Shoichi
Nishikawa, Takashi
Miyagishi, Shigeyoshi
机构：
[1] Ishihara Sangyo Kaisha Ltd, Funct Mat R&D Div, Yokaichi, Mie 5100842, Japan
[2] Kanazawa Univ, Div Mat Sci, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2007年 / 188卷 / 01期
关键词：
TiO2; photocatalyst; visible light; NOx; platinum;
D O I：
10.1016/j.jphotochem.2006.11.026
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Photooxidation of NOx has been studied using titanium dioxide (Ishihara ST-01) treated with H2PtCl6. The experimental results indicate that Pt-modified TiO2 with different ligand structures can be synthesized according to the Pt treating procedure. TiO2 photocatalysts with certain Pt complexes produced significantly high photocatalytic activity under visible light irradiation without decreasing photoactivity under UV light irradiation. The visible-light-induced photocatalytic activity depended on the amount of Pt, but not greatly on the coordination number of Cl ions. It was suggested that the surface complex formation associated with Ti-O-Pt chemisorption dominated the visible light reactivity. (c) 2006 Elsevier B.V. All rights reserved.
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页码：106 / 111
页数：6
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