La_(1-x)Sr_xFeO_3光催化降解水溶性染料  

Photocatalytic Degradation of Water-soluble Dyes over La_(1-x)Sr_xFeO_3

作　　者：杨秋华[1] 傅希贤[1] 王俊珍[1] 白树林[1] 孙艺环[1] 

机构地区：[1]天津大学理学院化学系,天津300072

出　　处：《应用化学》2000年第6期585-588,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目!(5 9772 0 19)

摘　　要：用柠檬酸法合成了钙钛矿型复合氧化物 La Fe O3,并按不同比例进行掺杂 ,制备了L a1-x Srx Fe O3( x=0 .0 1、0 .0 2、0 .0 3、0 .0 4、0 .0 5) .以荧光汞灯为光源测定了样品对不同染料的光催化降解活性 ,根据红外、紫外、光声光谱等技术对催化剂的分析结果 ,讨论了光催化性能及掺杂Sr2 +对其活性的影响 ,结果表明 ,掺杂后 L a FeThe LaFeO 3 and a series of Sr-doped compounds La 1-xSr xFeO 3(x=0.01,0.02,0.03,0.04,0.05) were prepared by a citrate method and the photodegradation of some water-soluble dyes were carried out over them by using a 450 W Hg lamp as irradiation source. The catalytic activities of LaFeO 3 and La 1-xSr xFeO 3 were compared also with IR, UV- Vis and acoustic spectrum measurements. The results revealed that the doped compounds showed a obvious greater catalytic activity than undoped one for dye photodegradation.

关 键 词：LAFEO3 掺杂 水溶性染料 光催化活性 光催化降解 

分 类 号：TQ610.1[化学工程—精细化工] O643.36[理学—物理化学]