Fabrication of graphene films on TiO2 nanotube arrays for photocatalytic application

被引：133

作者：

Liu, Chengbin ^{[1
]}

Teng, Yarong ^{[1
]}

Liu, Ronghua ^{[1
]}

Luo, Shenglian ^{[1
]}

Tang, Yanhong ^{[2
]}

Chen, Liuyun ^{[2
]}

Cai, Qingyun ^{[1
]}

机构：

[1] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Peoples R China

[2] Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Peoples R China

来源：

CARBON | 2011年 / 49卷 / 15期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

LARGE-AREA; FUNCTIONALIZED GRAPHENE; OXIDE; NANOPARTICLES; REDUCTION; NANOSHEETS; SHEETS; CARBON;

D O I：

10.1016/j.carbon.2011.07.051

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 film was formed on the surface of titanium dioxide nanotube (TiO2 NT) arrays through in situ electrochemical reduction of a graphene oxide dispersion by cyclic voltammetry. The residual oxygen-containing groups and other structural defects such as sp(3)-hybridized carbons in the electrodeposited graphene were further removed by photo-assisted reduction of the underlying TiO2 NTs, thus achieving the maximum restoration of pi-conjugation in the graphene planes. Spectroscopic, electrochemical, and photoelectrochemical techniques were used to characterize the graphene films, and the use of the resulting graphene-TiO2 NT material in photocatalysis was investigated. The results showed that the graphene-TiO2 NT material exhibited a greatly improved photocatalytic activity compared with unmodified TiO2 NTs. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5312 / 5320

页数：9

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