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
收藏
页码：5312 / 5320
页数：9
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