Photocatalytic oxidation of nitrite by sunlight using TiO2 supported on hollow glass microbeads

被引：39

作者：

Chen, SF

Cao, GG ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys Chem, Hefei 230026, Peoples R China

[2] Huaibei Coal Teachers Coll, Dept Chem, Huaibei 235000, Peoples R China

来源：

SOLAR ENERGY | 2002年 / 73卷 / 01期

关键词：

D O I：

10.1016/S0038-092X(02)00033-6

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The feasibility of photocatalytic oxidation of nitrite using TiO2 supported on hollow glass microbeads as a photocatalyst by sunlight was studied. The results showed that 1.1 x 10(-4) mol/dm(3) of nitrite can be completely photocatalytically oxidized after 120-min illumination by sunlight. The conversion of nitrite was increased rapidly by adding a small amount of H2O2, Fe3+ and Pd2+. The effects of parameters such as the amount of TiO2/beads, air flow, initial pH, dichromate, SO42-, NO3-, Cl- and organic compounds on the photocatalytic oxidation of nitrite were also studied. The possible mechanisms of photocatalytic oxidation of nitrite were investigated. After 150-h illumination by sunlight, there was no significant loss of the photocatalytic activity of TiO2/beads. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：15 / 21

页数：7

共 17 条

[1] Photocatalytic properties of ZrO2 and Fe/ZrO2 semiconductors prepared by a sol-gel technique [J].