采用柠檬酸络合法制备了La1-xZnxMnO3(x为0,0.02,0.04,0.06和0.08)复合化合物,并利用XRD,TEM和紫外–可见分光光度分析等手段对其进行了表征。通过其对活性艳红X—3B的降解情况,研究其光催化活性。结果表明:所合成复合化合物为钙钛矿型结构,平均粒径为30nm。在A位掺杂Zn2+后,使LaMnO3对染料的降解率显著提高,其中La0.94Zn0.06MnO3对染料的降解率达到89.46%。 La1-xZnxMnO3 (x = 0,0.02,0.04,0.06 and 0.08) were synthesized by citrate complexation method and characterized by XRD, TEM and UV-Vis spectrophotometry. Through its degradation of reactive brilliant red X-3B, its photocatalytic activity was studied. The results show that the synthesized compound has a perovskite structure with an average particle size of 30 nm. The doping of Zn2 + in A site made the degradation rate of LaMnO3 significantly increase, of which La0.94Zn0.06MnO3 dye degradation rate of 89.46%.