Criticial Assessment of the Photocatalytic Reduction of Cr(VI) over Au/TiO2

被引：12

作者：

Anh Binh Ngo ^{[1
,2
]}

Hong Lien Nguyen ^{[2
]}

Hollmann, Dirk ^{[3
,4
]}

机构：

[1] Leibniz Inst Catalysis, Albert Einstein Str 29a, D-18059 Rostock, Germany

[2] Hanoi Univ Sci & Technol, Sch Chem Engn, Dai Co Viet St 1, Hanoi 100000, Vietnam

[3] Univ Rostock, Inst Chem, Albert Einstein Str 3a, D-18059 Rostock, Germany

[4] Univ Rostock, Interdisciplinary Fac, Dept Life Light & Matter, Albert Einstein Str 25, D-18059 Rostock, Germany

来源：

CATALYSTS | 2018年 / 8卷 / 12期

关键词：

photocatalysis; Au/TiO2; Cr(VI) reduction; citric acid; adsorption; HYDROGEN EVOLUTION; TIO2; PARTICLES; OXIDATION; COMPOSITE; CHROMIUM; ACID;

D O I：

10.3390/catal8120606

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 purification of drinking water is one of the most urgent challenges in developing countries, for which the efficient removal of traces of heavy metals, e.g., Cr(IV), represents a key technology. This can be achieved via photocatalysis. In this study, we compare the performance of Au/TiO2 to bare TiO2 P25 catalysts. Furthermore, the influence of the sacrificial reagent citric acid under UV-Vis and Vis excitation was investigated and a detailed investigation of the catalysts before and after reaction was performed. During the photocatalytic reduction of Cr(IV) under acidic conditions, both leaching of Au, as well as absorption of Cr, occur, resulting in new catalyst systems obtained in situ.

引用

页数：11

共 20 条

[1] Optimizing the Deposition of Hydrogen Evolution Sites on Suspended Semiconductor Particles using On-Line Photocatalytic Reforming of Aqueous Methanol Solutions [J].