TiO2 photocatalytic oxidation of monochloroacetic acid and pyridine:: influence of ozone

被引：97

作者：

Kopf, P ^{[1
]}

Gilbert, E ^{[1
]}

Eberle, SH ^{[1
]}

机构：

[1] Forschungszentrum Karlsruhe GMBH, Inst Tech Chem, Bereich Wasser & Geotechnol, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2000年 / 136卷 / 03期

关键词：

photocatalysis; ozone; titanium dioxide;

D O I：

10.1016/S1010-6030(00)00331-2

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：

The influence of ozone on the photocatalytic oxidation of monochloroacetic acid and pyridine with TiO2 (0.5 g/l) at pH 3 (H2SO4) was investigated. Illumination was performed in a batch reactor (400 mi), with UV-lamp (360-420 nm; 7 x 10(-6) Einstein s(-1)) with continuous introduction of oxygen or ozone containing oxygen. The photocatalytic ozonation of monochloroacetic acid and pyridine which does not react with ozone alone under given conditions leads to 6 and 24 times higher degradation rates than without TiO2 and 4 and 18 times higher rates than without ozone. Moreover the photocatalytic ozonation shows the lowest specific energy consumption (kW h/g DOC-reduction) of the different processes under the experimental conditions. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：163 / 168

页数：6

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