LaFeO_3和SrFeO_(3-λ)对水溶性染料的光催化降解  

Studies on Photo-catalytic Degradation of Perovskite-type Oxides: LaFeO_3 and SrFeO_(3-λ)

作　　者：桑丽霞[1] 傅希贤[1] 杨秋华[1] 孙艺环[1] 王俊珍[1] 

机构地区：[1]天津大学化学系,天津300072

出　　处：《环境科学与技术》2002年第2期4-6,共3页Environmental Science & Technology

基　　金：国家自然科学基金资助项目 (59772 0 1 9)

摘　　要：采用柠檬酸法合成钙钛矿型复合氧化物LaFeO3和SrFeO3 λ,并以其为光催化剂对不同水溶性染料进行光催化降解实验。结果表明 :SrFeO3 λ的光催化活性明显高于LaFeO3,这与A位离子 (La3+ 、Sr2 + )的电子构型的不同有关。Degradation experiments of various water soluble dyes were performed in a suspension system of LaFeO\-3 and SrFeO\-\{3 λ\} prepared by citrate method. A fluorescent Hg lamp was used as irradiation source. The experimental results presented evident photo catalytic activities of perovskite type oxides, of which SrFeO\-\{3 λ\} showed stronger activities than LaFeO\-3. This is attributed to the unique electronic structure of the ion A(La\+\{3+\}, Sr\+\{2+\}).

关 键 词：LAFEO3 SrFeO3-λ 光催化活性 水溶性染料 

分 类 号：O643.36[理学—物理化学]