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A Study of Titanium Oxide Film Electrodes Prepared by Direct Thermal Oxidation Ⅱ. Photoelectrochemical Performance
Tong Shaoping,Leng Wenhua,Zhang Zhao,Zhang Jianqing
Author NameAffiliationE-mail
Tong Shaoping Department of Chemistry, Zhejiang University, Hangzhou 310027  
Leng Wenhua Department of Chemistry, Zhejiang University, Hangzhou 310027 lengwh@css.zju.edu.cn 
Zhang Zhao Department of Chemistry, Zhejiang University, Hangzhou 310027  
Zhang Jianqing Department of Chemistry, Zhejiang University, Hangzhou 310027  
Abstract:
The impedance and photoelectrochemical properties of titanium oxide film formed by direct thermally oxidation of titanium were investigated by electrochemical impedance spectroscopy, photocurrent response etc. The results showed that the charge transfer resistance of interfacial decreased, while photocurrent increased gradually and the photoelectrocatalytic degradation rate of aniline increased with increasing the oxidation temperature. The photoelectrochemical performance of TiO2electrode decreased sharply when the oxidation temperature was higher than 600℃. There had good correlation between the structure of catalyst, charge transfer resistance of interfacial, photocurrent and photoelectrocatalytic degradation rate of aniline.
Key words:  Titanium oxide, Thermal oxidation, Impedance, Photoelectrochemistry
FundProject:国家自然科学基金资助项目(20107006).
直接热氧化制备氧化钛薄膜电极的研究Ⅱ.光电性能
童少平,冷文华*,张昭,张鉴清
摘要:
采用电化学阻抗谱和光电响应等手段对在光照下热氧化制备的氧化钛膜的阻抗和光电性质进行了研究.结果表明,随氧化温度升高,界面电荷转移电阻减小,光电流逐渐增大,苯胺的光电催化速率降解增大.温度大于600℃后,电极的光电性能急剧降低.热氧化制备的氧化钛膜电极的结构、界面电荷转移电阻、光电流和光电催化降解苯胺的速率之间存在良好的相关性.
关键词:  氧化钛  热氧化  阻抗  光电化学
DOI:10.1088/1674-0068/15/1/65-68
分类号: