ABO_3钙钛矿型复合氧化物光催化活性与B离子d电子结构的关系  

THE RELATION OF PHOTOCATALYTIC ACTIVITY OF PEROVSKTIE (ABO_3) TYPE OXIDE AND D-ELECTRON STRUCTURE OF ION B

作　　者：桑丽霞[1] 傅希贤[1] 白树林[1] 杨秋华[1] 王俊珍[1] 曾淑兰[1] 

机构地区：[1]天津大学化学系,天津300072

出　　处：《感光科学与光化学》2001年第2期109-115,共7页Photographic Science and Photochemistry

基　　金：国家自然科学基金资助 !(59770 1 9)

摘　　要：在ABO3钙钛矿型复合氧化物中 ,B离子的d电子结构对B3d-O2p之间的电荷转移能ΔCT及B -O之间的结合能起着关键作用 ,是影响ABO3复合氧化物光催化活性的一个重要因素 .本文以研磨法和柠檬酸法合成了系列LaBO3(B =Ti-Co) ,并结合光催化降解实验和光声光谱图分析得出 :LaBO3光催化活性随B离子The d electron structure of ion B in perovskite(ABO 3) type oxide has the key role on the binding energy of B-O and the charge transfer energy( Δ CT ) between O 2p and B 3d , so it has an important influence on the photocatalytic activity of ABO 3. In this paper, the species LaBO 3(B=Ti Co) were prepared by the mixed oxide method and the citrate complex method. By analyzing the photocatalytic degradation experiment and their photo acoustic spectra, the results show that photocatalytic activity of LaBO 3 increases with the increasing of d electron number of ion B.

关 键 词：ABO3钙钛矿型复合氧化物 光催化活性 d电子结构 B离子 光催化剂 电荷转移能 

分 类 号：O643.3[理学—物理化学]