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 Fe O3的光催化活性明显提高 The perovskite-type composite oxide LaFeO3 was synthesized by citric acid method and doped with different proportions to prepare L a1-x Srx Fe O3 (x = 0 .0 1,0 .0 2,0 .0 3,0. 0 4,0 .0 5). The photocatalytic degradation activity of different dyes was measured by using fluorescent mercury lamp as light source. According to the analysis results of the catalysts by infrared, ultraviolet and photoacoustic spectroscopy, the effects of light The results show that the photocatalytic activity of L a Fe O 3 after doping is obviously increased