| Photostability Study of Nanoporous TiO2 Film Electrodes in Basic Solutions |
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| 作者姓名： | JiangLinCAO WenHuaLENG JianQingZHANG ChuNanCAO |
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| 作者单位： | DepartmentofChemistry,YuquanCampus,ZhejiangUniversity,Hangzhou310027 |
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| 摘 要： | The nanoporous TiO2 film electrodes have been prepared by a sol-gel deposition process The photostability of the electrodes in basic solutions has been studied. The results show that the photostability of the electrodes decreases rapidly in strong basic solutions with or without methanol. The reaction of holes to O^2- produces active O^2- atoms and the products O^2- atomsoxidize Ti^3 to Ti^4 on TiO2 film surface and subsurface. This results in the TiO2 film electrodes unstable in basic solutions both without methanol and with too low concentration.
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| 关 键 词： | TiO2胶卷 二氧化钛 光稳定性 电化学 感光性 |
Photostability Study of Nanoporous TiO2 Film Electrodes in Basic Solutions |
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| JiangLinCAO WenHuaLENG JianQingZHANG ChuNanCAO.Photostability Study of Nanoporous TiO2 Film Electrodes in Basic Solutions[J].Chinese Chemical Letters,2005,16(6):827-830. |
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| Authors: | Jiang Lin CAO Wen Hua LENG Jian Qing ZHANG Chu Nan CAO |
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| Institution: | Jiang Lin CAO,Wen Hua LENG,Jian Qing ZHANG,Chu Nan CAO Department of Chemistry,Yuquan Campus,Zhejiang University,Hangzhou 310027 |
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| Abstract: | The nanoporous TiO2 film electrodes have been prepared by a sol-gel deposition process. The photostability of the electrodes in basic solutions has been studied. The results show that the photostability of the electrodes decreases rapidly in strong basic solutions with or without methanol. The reaction of holes to O2-ad produces active O-ad atoms and the products O-ad atoms oxidize Ti3+ to Ti4+ on TiO2 film surface and subsurface. This results in the TiO2 film electrodes unstable in basic solutions both without methanol and with too low concentration. |
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| Keywords: | Photostability TiO2 film photoelectrochemistry |
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