Preparation of graphene-TiO2 composites with enhanced photocatalytic activity

被引：525

作者：

Zhou, Kangfu ^{[1
]}

Zhu, Yihua ^{[1
]}

Yang, Xiaoling ^{[1
]}

Jiang, Xin ^{[1
]}

Li, Chunzhong ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

来源：

NEW JOURNAL OF CHEMISTRY | 2011年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

SOL-GEL METHOD; GRAPHITE OXIDE; PHYSICOCHEMICAL PROPERTIES; SOLVOTHERMAL REDUCTION; CARBON NANOTUBES; TIO2; FILMS; NANOPARTICLES; TITANIA; SHEETS;

D O I：

10.1039/c0nj00623h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photocatalytic activity of TiO2 is limited by the aggregation of nanoparticles and the fast electron-hole pair recombination. Graphene sheets, with high specific surface area and unique electronic properties, can be used as a good support for TiO2 to enhance the photocatalytic activity. Herein, we prepared graphene-TiO2 (G-TiO2) composites through a one-pot solvothermal reaction by using graphite oxide (GO) and tetrabutyl titanate as starting materials. TiO2 particles with anatase phase and a narrow size distribution were dispersed on the surface of graphene sheets uniformly. The fluorescence quenching confirmed that graphene acted as an electron-acceptor material to effectively hinder the electron-hole pair recombination of TiO2. The product prepared with 30 mg of GO and 8 h of reaction time exhibited excellent photocatalysis to methylene blue (MB) degradation under irradiation of simulated sunlight. Such intriguing photocatalyst may find significant applications in various fields.

引用

页码：353 / 359

页数：7

共 51 条

[1] Photocatalytic Reduction of Graphene Oxide Nanosheets on TiO2 Thin Film for Photoinactivation of Bacteria in Solar Light Irradiation [J].