Significant photocatalytic enhancement in methylene blue degradation of TiO2 photocatalysts via graphene-like carbon in situ hybridization

被引：248

作者：

Wang, Yajun ^{[1
]}

Shi, Rui ^{[1
]}

Lin, Jie ^{[1
]}

Zhu, Yongfa ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2010年 / 100卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Photocatalysis; Graphene-like carbon; TiO2; Surface hybridization; TITANIUM-DIOXIDE; PHOTOELECTROCATALYTIC DEGRADATION; PHOTOCORROSION INHIBITION; PHOTOACTIVITY; PARTICLES; CHEMISTRY;

D O I：

10.1016/j.apcatb.2010.07.028

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：

Graphene-like carbon/TiO2 photocatalysts were prepared via a facile in situ graphitization approach. The introduction of graphene-like carbon to TiO2 effectively enhanced its photocatalytic activity. A graphene-like carbon/TiO2 photocatalyst with a monolayer carbon shell (0.468 nm) showed the highest photocatalytic activity which is about 2.5 times as high as that of pristine TiO2 (P25) under UV light irradiation. The mechanism of the enhanced photocatalytic activity is based on the synergetic effect between graphene-like carbon and TiO2. The synergetic effect caused a rapid photoinduced charge separation and decreased the possibility of recombination of electron hole pairs, which increased the number of holes participated in the photooxidation process and enhanced the photocatalytic activity. (C) 2010 Published by Elsevier B.V.

引用

页码：179 / 183

页数：5

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