Detection of reactive oxygen species (ROS) generated by TiO2(R), TiO2(R/A) and TiO2(A) under ultrasonic and solar light irradiation and application in degradation of organic dyes

被引：71

作者：

Guo, Yuwei ^{[1
]}

Cheng, Chunping ^{[2
]}

Wang, Jun ^{[1
]}

Wang, Zhiqiu ^{[1
]}

Jin, Xudong ^{[1
]}

Li, Kai ^{[1
]}

Kang, Pingli ^{[1
]}

Gao, Jingqun ^{[1
]}

机构：

[1] Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China

[2] Baotou Normal Coll, Dept Chem, Baotou 014030, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 192卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Reactive oxygen species (ROS); Mixed crystal phase TiO2 powder; Ultrasonic irradiation; Solar light irradiation; Dye degradation; SONOCATALYTIC DEGRADATION; PHOTOCATALYTIC DEGRADATION; CATALYTIC-ACTIVITIES; LIPID-PEROXIDATION; SINGLET OXYGEN; FREE-RADICALS; ANTIOXIDANT; OXIDATION; SONOLYSIS; ORANGE;

D O I：

10.1016/j.jhazmat.2011.05.084

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In the present work, the rutile, anatase and mixed (rutile and anatase) crystal phase TiO2 powders were irradiated by ultrasound and solar light, respectively, and the generation of reactive oxygen species (ROS) were detected through the oxidation reaction from 1,5-diphenyl carbazide (DPCI) to 1,5-diphenyl carbazone (DPCO). The DPCO can be extracted by the mixed solvent of benzene and carbon tetrachloride and the extract liquors display an obvious absorption peak around 563 nm. In addition, the influences of (ultrasonic or solar light) irradiation time, TiO2 addition amount and DPCI concentration on the quantities of generated ROS were also reviewed. The kinds of generated ROS were determined by using several radical scavengers. At last, the researches on the sonocatalytic and photocatalytic degradation of several organic dyes were also performed. It is wished that this paper might offer some important subjects for broadening the applications of sonocatalytic and photocatalytic technologies. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：786 / 793

页数：8

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