Effect of citric acid (CA) on microstructure and photoelectrochemical properties of WO3 films prepared by the polymeric precursor method was investigated. The obtained materials were characterized by means of X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM). The results showed that samples prepared with adding different amounts of citric acid had a pure phase of cubic. The addition of citric acid could significantly increase the particle size and change the surface of WO3 films. The photoelectrochemical measurements were performed using a standard three-electrode system cell. The films prepared from mass ratios of CA/PEG (R = 0, 0.2, 0.4, 0.6 and 1) showed 1.0, 1.4, 1.7, 2.1 and 0.9 mA cm(-2) at 1.2 V under illumination with a 500 W xenon lamp (I-0 = 100 mW/cm(2)), respectively. (C) 2010 Elsevier B.V. All rights reserved.
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Jinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R ChinaJinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R China
Liang, Dong
Xiong, Sang
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Nanjing Inst Technol, Coll Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R ChinaJinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R China
Xiong, Sang
Zhang, Xiaojuan
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Jinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R ChinaJinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R China
Zhang, Xiaojuan
Lin, Qing
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Jinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R ChinaJinling Inst Technol, Coll Mat Engn, Nanjing 211167, Jiangsu, Peoples R China
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Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R China
Yang, Chaoqun
Zhu, Qiang
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Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R China
Zhu, Qiang
Lei, Tao
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Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R China
Lei, Tao
Li, Huayao
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Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R China
Li, Huayao
Xie, Changsheng
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Huazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R ChinaHuazhong Univ Sci & Technol, Dept Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Nanomat & Smart Sensors Res Lab, Wuhan 430074, Peoples R China