La^(3+)修饰对纳米ZnO/TiO_(2)复合粉体的光催化性能影响  

Effection of Metal La^(3+)Dopped on the Photocatalytic Performance of Nano ZnO/TiO_(2) Composite Powders

作　　者：汪鹏 许应生[1] 屠后为 徐茂红[1] WANG Peng;XU Ying-sheng;TU Hou-wei;XU Mao-hong(West Anhui Health Vocational College,Anhui Lu'an 237005,China)

机构地区：[1]皖西卫生职业学院,安徽六安237005

出　　处：《广州化工》2024年第8期48-50,共3页GuangZhou Chemical Industry

基　　金：安徽省高等学校科学研究一般项目(2022YJZR003);皖西卫生职业学院骨干教师培养项目(2022YJJSPY20)。

摘　　要：以La_(2)(SO_(4))3、Ti(SO_(4))2和ZnSO_(4)·7H_(2)O为原料,体积分数为40%的乙醇作溶剂,用共沉淀法制备La^(3+)修饰纳米ZnO/TiO_(2)复合光催化材料,初步研究了La^(3+)修饰对ZnO/TiO_(2)光催化性能的影响。有实验可知,用最佳镧掺杂量为0.2%的Zn∶Ti=3∶10的ZnO/TiO_(2)样品,La^(3+)修饰ZnO/TiO_(2)纳米复合粉体对甲基橙降解率可达到38.4%。掺入金属La^(3+)有效地抑制ZnO/TiO_(2)纳米复合粉体粒子之间的团聚,比表面积增加,光催化活性明显增强。并采用XRD等测试手段对其进行表征。Using La_(2)(SO_(4))3,Ti(SO_(4))2 and ZnSO_(4)·7H_(2)O as raw materials,40%ethanol as solvent,La^(3+)dopped nano ZnO/TiO_(2) composite photocatalyst materials were prepared by coprecipitation method.According to the experiments,using ZnO/TiO_(2) samples with an optimal lanthanum doping content of 0.2%and a ratio of Zn∶Ti=3∶10,La^(3+)dopped ZnO/TiO_(2) nanocomposite powder can achieve a degradation rate of 38.4%for methyl orange.The addition of metal La^(3+)effectively inhibited the aggregation between ZnO/TiO_(2) nanocomposite particles,increased the specific surface area,and significantly enhanced the photocatalytic activity.And it was characterized by XRD and other test methods.

关 键 词：La^(3+)修饰 ZnO/TiO_(2) 光催化剂 

分 类 号：O643.3[理学—物理化学]