The composite oxide of La0.7 Ca0.3 Fe0. 25 Co0. 75 O3 nanocrystal has been synthesized by glycine-nitrate combustion method. A novel nanocomposite photocatalyst PMo12/PPy/La0.7 Ca0.3 Fe0.25 Co0. 75 O3 has been successfully prepared first using a chemical oxidation method with (NH4)2 S2 Os as an oxidant to form PPy/La0.7 Ca0.3 Fe0.25 Co0.75-O3 nanoparticles and then by an electrostatic assembly of PMo123-. The resulting materials are characterized by XRD, SEM, FT-IR techniques. Photocatalytic performance test is taking low concentration of methylene blue dye .solution as the degradation of target. The results show that the load modification of PMo12 improves the photocatalytic activity of La0. 7 Ca0. 3 Fe0. 25 Co0.75 O3/PPy.%采用甘氨酸-硝酸盐燃烧法成功制备了La0.7Ca03Fe0.25Co0.75O3钙钛矿型复合氧化物,以(NH4)2S2O8为氧化剂,运用化学氧化法合成La0.7Ca0.3Fe0.25Co0.75O3/聚吡咯薄膜,然后通过静电自组装方法制备了一种新的表面负载修饰型复合光催化剂LA0.7Ca0.3Fe0.25Co0.75O3/PPy/PMo12.采用XRD、SEM、FT-IR对催化剂的物化结构进行了表征.光催化性能测试是以亚甲基蓝染料的水溶液为降解目标,结果表明,PMo12的负载修饰改进了La0.7Ca0.3-Fe0.25Co0.75O3/PPy光催化剂的催化活性.
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