中文摘要：

采用柠檬酸法合成了系列纳米钙钛矿型La1-xAgxMnO3（x=0,0.05,0.1,0.2,0.3,0.4,0.5）稀土复合氧化物,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。利用TG-DTA和XRD技术对该系列氧化物进行了结构表征,采用XPS技术测其表面吸附氧的含量。结果表明,La1-xAgxMnO3表面吸附氧的含量随掺杂比的不同而有规律的改变,进而影响其光催化活性;吸附氧的含量越高,对应的催化剂活性越强。

英文摘要：

Perovskite-type La1-x Ag MnO3 （x = 0,0.05,0.1,0.2,0.3,0.4,0.5 ） were prepared by citrate method. Using afluoreceent Hg lamp as irradiator,the degradation experiments of various water-soluble dyes were carried out in the suspension system of La1-xAgxMnO3. The productions were characterized by means of TG-DTA and XRD. And also using XPS to measure their surface adsorbed oxygen. The result shows that the surface adsorbed oxygen of perovskite composite La1-xAgxMnO3 changes regularly by different rate of doping. Then it will affect the photocatalytic activity. It is concluded that the more surface adsorbed oxygen the higher photocatalytic activity is.