【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 Fe O3的光催化活性明显提高更多还原

【Abstract】 The 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.更多还原