Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5357286 | Applied Surface Science | 2010 | 6 Pages |
Abstract
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 (RÂ =Â 0, 0.2, 0.4, 0.6 and 1) showed 1.0, 1.4, 1.7, 2.1 and 0.9Â mAÂ cmâ2 at 1.2Â V under illumination with a 500Â W xenon lamp (I0Â =Â 100Â mW/cm2), respectively.
Related Topics
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Physical and Theoretical Chemistry
Authors
Wenzhang Li, Jie Li, Xuan Wang, Jun Ma, Qiyuan Chen,