高活性低失活In(OH)_3纳米晶光催化剂的制备和表征  

Preparation and Characterization of In(OH)_3 Nanocrystal with High Photocatalytic Activity and Stability

作　　者：陈友三[1] 王绪绪[1] 李旦振[1] 付贤智[1] 

机构地区：[1]福州大学光催化研究所福建省光催化重点实验室,福州350002

出　　处：《高等学校化学学报》2007年第2期355-357,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20537010;20573020;20373011和20273014);国家重大基础研究前期研究专项基金(批准号:2004CCA07100);福建省重大基础研究基金(批准号:2003F004)资助

摘　　要：In(OH)3 photocatalyst was prepared using ultrasonic hydrolysis precipitation followed by calcining at temperature lower than 160 ℃.The characterizations by XRD,DRS,TG-DSC,TEM and FTIR show that the solid is a cubic crystal with 10—15 nm size,and has two band gaps,direct band gap 5.48 and indirect gap 5.02 eV.Evaluation of the photocatalytic activity toward oxidation reactions of benzene under UV irradiation(λmax=254 nm) showed that In(OH)3 presented much higher photoactivity and active stability than commercial Degussa-P25 TiO2.FTIR characterization for the samples before and after the photocatalytic reaction suggested that the better photocatalytic behavior of In(OH)3 than the TiO2 is due to lower aggradations of the intermediate species on its surface in photocatalytic process.In（OH） 3 photocatalyst was prepared using ultrasonic hydrolysis precipitation followed by calcining at temperature lower than 160 ℃. The characterizations by XRD, DRS, TG-DSC, TEM and FTIR show that the solid is a cubic crystal with 10-15 nm size, and has two band gaps, direct band gap 5.48 and indirect gap 5.02 eV. Evaluation of the photocatalytic activity toward oxidation reactions of benzene under UV irradiation （ λmax = 254 nm） showed that In （OH） 3 presented much higher photoactivity and active stability than commercial Degussa-P25 TiO2. FTIR characterization for the samples before and after the photocatalytic reaction suggested that the better photocatalytic behavior of In（OH） 3 than the TiO2 is due to lower aggradations of the intermediate species on its surface in photocatalytic process.

关 键 词：In(OH)3 P25-TiO2 光催化 苯 

分 类 号：O643[理学—物理化学]