可见光激发下Pt^(Ⅳ)Cl_x/TiO_2的光诱导电子转移研究  

Studies on Electron Transfer on Pt^(Ⅳ)Cl_(x)/TiO_(2) Induced by Irradiation of Visible Light

作　　者：陈亦琳[1] 李旦振[1] 吴清萍[1] 付贤智[1] 王绪绪[1] 

机构地区：[1]福州大学光催化研究所,福州350002

出　　处：《高等学校化学学报》2006年第2期340-342,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20133010;20473018;20273014);教育部科技重点项目(批准号:03061);福建省自然科学基金重大项目(批准号:2003F004);福建省教育厅重点项目(批准号:JA02138);国家重大基础研究前期专项基金(批准号:2004CCA07100)资助

摘　　要：A TiO2 modified with PtⅣ chloride was investigated by diffuse reflectance UV-Vis spectra（DRS）,X-ray photoelectron spectroscopy（XPS）, surface photovoltage spectroscopy（SPS） and electric field-induced surface photovoltage spectroscopy（EFISPS）.XPS showed that a Ti-O-PtⅣClx surface complex between PtⅣ chloride and TiO2 appears to be responsible for visible light absorption.An electron transfer from the surface-complexed PtⅣClx to the conduction band of TiO2 upon absorbing visible light was confirmed by SPS and EFISPS.A TiO2 modified with Pt^Ⅳ chloride was investigated by diffuse reflectance UV-Vis spectra （ DRS）, X-ray photoelectron spectroscopy （XPS）, surface photovohage spectroscopy（SPS） and electric field-indueod surface photovoltage spectroscopy（EFISPS）. XPS showed that a Ti-O-Pt^Ⅳ Clx surface complex between Pt^Ⅳ chloride and TiO2 appears to be responsible for visible light absorption. An electron transfer from the surfaceeomplexod Pt^Ⅳ Clx to the conduction band of TiO2 upon absorbing visible light was confirmed by SPS and EFISPS.

关 键 词：Pt^ⅣClx/TiO2 可见光 表面光电压谱 电子转移 

分 类 号：O643[理学—物理化学]