Hierarchically structured WO3-CNT@TiO2NS composites with enhanced photocatalytic activity

被引：23

作者：

Li, Shixiong ^{[1
]}

Zhao, Zhefei ^{[1
]}

Huang, Yicao ^{[1
]}

Di, Jing ^{[1
,2
]}

Jia, Yi ^{[3
]}

Zheng, Huajun ^{[1
,2
]}

机构：

[1] Zhejiang Univ Technol, Dept Appl Chem, Hangzhou 310014, Zhejiang, Peoples R China

[2] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Zhejiang, Peoples R China

[3] Griffith Univ, QMNC, Nathan, Qld 4111, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 10期

关键词：

METHYLENE-BLUE; HYDROGEN-PRODUCTION; TIO2; FABRICATION; NANOTUBES; NANOCOMPOSITES; PERFORMANCE; OXIDATION; FILMS;

D O I：

10.1039/c4ta06883a

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：

A novel hierarchically structured WO3-CNT@TiO2NS composite was prepared by the combination of solvothermal and liquid-phase chemistry deposition techniques. The obtained composite has a highly rough and porous structure with WO3 nanoparticles distributed uniformly on the surface. The photocatalytic performance was tested by photocatalytic degradation of methylene blue. It is indicated that the WO3-CNT@TiO2NS composite shows more remarkable improvement of the photocatalytic performance than that of the CNT@TiO2NS. In particular, the presence of 15 wt% WO3 enables reaching the highest photocatalytic activity, which is 4 times that of CNT@TiO2NS. The enhanced photocatalytic properties are mainly attributed to the more efficient photogenerated carrier separation, enhanced light absorption as well as the higher adsorption ability. It is suggested that WO3 deposition is a promising way to enhance the photocatalytic activity of a TiO2-based photocatalyst.

引用

页码：5467 / 5473

页数：7

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