Fabrication of a novel heterostructure of Co3O4-modified TiO2 nanorod arrays and its enhanced photoelectrochemical property

被引：57
作者：
Cao, Chunlan [1 ,2 ]
Hu, Chenguo [1 ]
Shen, Weidong [2 ]
Wang, Shuxia [1 ]
Wang, Jianli [2 ]
Tian, Yongshu [2 ]
机构：
[1] Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China
[2] Chongqing Commun Coll, Dept Power Engn, Chongqing 400035, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 550卷
关键词：
TiO2 nanorod arrays; Co3O4; Heterostructure; Photoelectrochemical property; CDS QUANTUM DOTS; THIN-FILMS; CO3O4; PHOTOCATALYST; PERFORMANCE; DEPOSITION; NANOWIRES; CAPACITY; OXIDE; CVD;
D O I：
10.1016/j.jallcom.2012.09.069
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 heterostructure of Co3O4-modified TiO2 nanorod arrays (NRs) is fabricated by a facile two-step solution-based method. First, TiO2 NRs grow on fluorine-doped tin oxide (FTO) conductive glass substrates by hydrothermal method. Afterward, Co3O4 nanoparticles were coated on the TiO2 NRs using a photochemical coating method. The samples were characterized by X-ray diffraction, field emission electron-scanning microscopy, transmission electron microscopic, X-ray photoelectron spectroscopy and UV-visible spectroscopy. For the first time, the photoelectrochemical (PEC) properties of the electrode made by the Co3O4-modified TiO2 NRs were investigated under visible-light irradiation. The results showed remarkably enhanced visible light PEC response of the Co3O4-modified TiO2 NRs in comparison with the pure TiO2 NRs, offering attractive perspectives for applications of the Co3O4-modified TiO2 NRs in solar cells or photocatalysts. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：137 / 143
页数：7
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