Hematite Photocatalysis: Dechlorination of 2,6-Dichloroindophenol and Oxidation of Water

被引：37

作者：

Baumanis, Clarissa ^{[1
]}

Bloh, Jonathan Z. ^{[1
]}

Dillert, Ralf ^{[1
]}

Bahnemann, Detlef W. ^{[1
]}

机构：

[1] Leibniz Univ Hannover, Inst Tech Chem, D-30167 Hannover, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 51期

关键词：

ALPHA-FE2O3; THIN-FILMS; FE2O3; DEPOSITION; CATALYSTS; HYDROGEN; PHENOL; SYSTEM; OXIDES; ZNO;

D O I：

10.1021/jp210279r

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：

We report photocatalytic studies employing colloids of pure hematite (alpha-Fe2O3) and hematite loaded with 1 and 5 wt % platinum, respectively. The kinetics of the dechlorination of the redox indicator 2,6-dichloroindophenol (DCIP) have been studied in aqueous colloidal suspensions of hematite at pH 7. At the same time, alpha-Fe2O3 carries out the photooxidation of water. The formation of hydroxyl radicals and of H2O2 has been investigated employing coumarin and p-hydroxyphenylacetic acid as reagents, respectively. With an increased amount of platinum on the colloidal surface, an enhanced photonic efficiency of the dye reduction is observed.

引用

页码：25442 / 25450

页数：9

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