Specific Analyses of the Active Species on Zn0.28Cd0.72S and TiO2 Photocatalysts in the Degradation of Methyl Orange

被引：48

作者：

Li, Wenjuan ^{[1
]}

Li, Danzhen ^{[1
]}

Xian, Jiangjun ^{[1
]}

Chen, Wei ^{[1
]}

Hu, Yin ^{[1
]}

Shao, Yu ^{[1
]}

Fu, Xianzhi ^{[1
]}

机构：

[1] Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 49期

基金：

中国国家自然科学基金;

关键词：

VISIBLE-LIGHT; EFFICIENT DEGRADATION; OPTICAL-PROPERTIES; ZNXCD1-XS; NANOCRYSTALS; IRRADIATION; PHOTOOXIDATION; NANOPARTICLES; PARTICLES; ESR;

D O I：

10.1021/jp106659g

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：

As different light-driven photocatalysts, Zn0.28Cd0.72S and TiO2 showed different properties in the photocatalytic process. In this paper, the comparison was carried out among the properties of Zn0.28Cd0.72S-visible, Zn0.28Cd0.72S-UV, and TiO2-UV light systems in the degradation of methyl orange. After the addition of different types of active species quenchers and the results detected by electron spin resonance, a photoluminescence technique, and a photometric method, it was found that, in the Zn0.28Cd0.72S-UV system, 02, center dot OH, and holes played a bigger role, whereas in the TiO2-UV system, center dot OH and holes predominated; in the Zn0.28Cd0.72S-visible light system, O-2 and holes contributed to the degradation. The differences between the two catalysts lead us to realize the active species and the degradation mechanism in photocatalytic process.

引用

页码：21482 / 21492

页数：11

共 39 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].