钙钛矿型复合氧化物镍酸镧光催化性能研究  

Study on Photocatalytic Property of Perovskite Composite Oxide LaNiO_3

作　　者：赵晓华[1] 陈道平[2] 娄向东[1] 成庆堂[1] 卢雁[1] 

机构地区：[1]河南师范大学化学与环境科学学院 [2]鹤壁职业技术学院,河南鹤壁456600

出　　处：《河南师范大学学报（自然科学版）》2005年第2期69-72,共4页Journal of Henan Normal University(Natural Science Edition)

基　　金：河南省自然科学基金资助项目(0211062500)

摘　　要：用共沉淀法制备出ABO3钙钛矿型复合氧化物LaNiO3,通过TG-DTA,XRD等手段对其热稳定性及结构进行了分析,研究了LaNiO3光催化降解水溶性染料偶氮兰的性能.探讨了光照时间、催化剂用量等因素对其光催化效果的影响及催化剂的回收重复利用等问题.研究结果表明,50mg的LaNiO3在80min可降解90%以上的偶氮蓝.回收的催化剂经800℃灼烧1h后仍具有较好的光催化活性.Perovskite composite oxide LaNiO_3 were prepared by chemical copreciptation method. It's thermal stability and crystal structure were analyzed by TG-DTA and XRD. It's photocatalytic activity for decolorizing azo blueuse were studied. The influence of different photocatalyst quantity and irradiation time on the efficiency of decolorization were investigated, and also reclaimed LaNiO_3 used as photocatalyst again were investigated. The results revealed that 90% azo blueuse could be degraded after illumination for 80 min with 50mg LaNiO_3, the reclaimed LaNiO_3 show a high photocatalytic activity after sintered at 800 ℃ for 1 h.

关 键 词：钙钛矿型复合氧化物LaNiO3 光催化 偶氮兰 

分 类 号：O634.32[理学—高分子化学]