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以氯化锌、氯化锡和氢氧化钠为反应物,通过前驱体煅烧法成功制得了片状单分散SnO2/ZnO复合物.用X射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)及紫外-可见漫反射光谱(UV-Vis DRS)等多种手段对产物进行表征.以甲基橙(MO)和亚甲基蓝(MB)为目标降解物,研究了紫外-可见光照下所制SnO2/ZnO复合物的光催化活性.实验结果显示,SnO2/ZnO复合物较纯ZnO表现出了更高的光催化活性.SnO2与ZnO的摩尔比为1∶3时,复合物光催化降解甲基橙的活性最高;SnO2与ZnO的摩尔比为1∶4时,复合物光催化降解亚甲基蓝的效果最好.同时,SnO2/ZnO复合光催化剂还具有良好的循环使用稳定性.SnO2/ZnO复合物的优异性能主要归因于SnO2与ZnO间的协同效应.“,”With zinc chloride,stannic chloride and sodium hydroxide as reactants,dispersed SnO2/ZnO composites with platelike shape were successfully synthesized by calcining the precursors.The X-ray diffractometer (XRD),field emission scanning electron microscope (FESEM)and UV-Vis diffuse reflectance spectra (UV-Vis DRS) were used to characterize the products.Photocatalytic activity of the as-prepared SnO2/ZnO composites was researched by utilizing methyl orange (MO) and methylene blue (MB) as degradation agents under UV-Vis light irradiation.The experiment result shows that SnO2/ZnO composites show higher photocatalytic activity compared with pure ZnO.The composite exhibits the highest activity for the photocatalytic degradation of MO when the mole ratio of SnO2 to ZnO is 1 ∶ 3,while it does the highest activity for that of MB when the mole ratio is 1 ∶ 4.Moreover,the SnO2/ZnO composites photocatalysts also show excellent circulation stability.The excellent performance of SnO2/ZnO composites is mainly attributed to the synergistic effect between SnO2 and ZnO.