【摘要】 采用柠檬酸络合法合成了钙钛矿型复合氧化物LaFeO3 和SrFeO3,并以其为催化剂对几种水溶性染料溶液进行降解实验。结果表明 ,LaFeO3 和SrFeO3 均有较强的催化性能 ,且SrFeO3 的催化活性明显高于LaFeO3。这主要与A位离子的种类有关 ,A位离子不仅改变了B位离子的价态和电子结构 ,同时还影响到A—O、B—O之间的结合能。更多还原

【Abstract】 Perovskite type mixed oxides LaFeO 3 and SrFeO 3 are prepared by citric acid complex method. It is used in catalytic degradation of water soluble dyes as catalyst. The results show that perovskite type LaFeO 3 and SrFeO 3 have high catalytic beharior, but the catalytic beharior of SrFeO 3 is higher than that of LaFeO 3, which is mainly related to the species of A site ions. A ions not only change the valence and electric structure of B ions, but also have effect on the combination energy of A-O、B-O更多还原