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La³⁺掺杂TiO₂光催化性能研究

Study on photocatalytic property of La³⁺ doped TiO₂ powders

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【Author】 MA Jian-hua,ZHAO Xiao-hong(1.Department of Chemical Engineering,Chengde Petroleum College,Chengde Hebei 067000,China;2.Qinghuangdao College,North China Coal Medicine Univisity,Qinhuangdao Hebei 066000,China)

【机构】承德石油高等专科学校化学工程系；华北煤医秦皇岛分院河北承德067000；河北秦皇岛066000；

【摘要】采用溶胶-凝胶法制备了La3+/TiO2光催化剂,研究了该催化剂对亚甲基蓝的光催化降解效果。结果表明,La3+掺杂量(摩尔分数)2.8%、催化剂用量1.2 g/L、体系pH值为11时,12 mg/L亚甲基蓝溶液经2 h光催化降解,其降解率可达99.1%。与纯TiO2相比,La3+/TiO2光催化剂显示出良好的光催化活性。更多还原

【Abstract】 La3+/TiO2 photocatalyst was prepared by the sol-gel method.The photocatalytic degradation of MB was studied.The results show that La3+ doped TiO2 exhibits greater photocatalytic activity than pure TiO2,When the optimum dosis of La3+ doped is 2.8%,the optimum dosis of catalyst is 1.2 g/L,pH is 11,and the photocatalytic degradation of MB arrives 99.1%.更多还原