以醋酸锌和硝酸镧为原料，丙烯酰胺为单体，N ，N’－亚甲基双丙烯酰胺为网络剂，过硫酸铵为引发剂，采用高分子网络凝胶法制备得到掺镧的ZnO纳米粉体。用制备的粉体对甲基橙进行光催化降解实验，考察了掺镧量对其光催化性能的影响。用X射线衍射仪、高分辨率透射电镜、X射线能谱仪、比表面积与孔隙率分析仪等对其进行表征。结果表明，镧的掺入提高了ZnO的光催化活性，镧锌摩尔质量比为0．2％时光催化性能最好，高压汞灯下反应1 h ，甲基橙的脱色率为96．5％，相比于未掺杂的ZnO提高了11．5％。%Lanthanum doped zinc oxide nanoparticles is prepared by polyacrylamide gel method using zinc actate and lan-thanum nitrate as raw material ,acrylamid as monomer ,N ,N’-methylenediacrylamide as lattice reagent and ammonium as initiator .The influences of the amount of doping lanthanum on ZnO on the photocatalysis are tested with a target pollutant methyl orange by the prepared powder .Analytical methods ,such as XRD ,TEM ,XPS and BET are utilized in this study . The results show that lanthanum doped on ZnO can improve its photocatalytic activity .Nanomaterial can reach the maximum photocatalytic effect when the doping amount of lanthanum is 0 .2% ,after treatment under high pressure mercury lamp irra-ditation for one hour ,the decolorization rate of methyl orange is 96 .5% and compared with pure ZnO ,the decolorization rate is increased by 11 .5% .
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