Photocatalytic reduction of nitrate ions on TiO2 by oxalic acid

被引：110
|
作者：
Li, YX
Wasgestian, F
机构：
[1] Univ Cologne, Inst Inorgan Chem, D-50939 Cologne, Germany
[2] Nanchang Univ, Dept Chem, Nanchang 330047, Peoples R China
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1998年 / 112卷 / 2-3期
关键词：
oxalic acid; nitrate; TiO2;
D O I：
10.1016/S1010-6030(97)00293-1
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：
Using oxalic acid as a hole scavenger, the photocatalytic reduction of nitrate in aqueous dispersions of TiO2 has been investigated. Oxalic acid accelerates the reaction considerably compared to the reaction in the absence of oxalic acid. In the presence of nitrate, the oxidation of oxalate is also accelerated. The reduction product of the nitrate is mainly ammonia. The effects of concentrations of nitrate, of oxalate, and of pH were studied. The adsorption of the reactants on TiO2 is an important factor for accelerating the reaction. (C) 1998 Elsevier Science S.A.
引用
收藏
页码：255 / 259
页数：5
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