ZnO纳米线与硫掺杂TiO2微/纳复合材料的制备及其光催化活性

采用水热法制备了ZnO纳米线与硫掺杂TiO2（ZnO/S-TiO2）微/纳复合光催化剂，通过SEM、XRD、XPS对复合光催化剂进行表征，探讨了硫掺杂量和煅烧温度对该复合催化剂光催化性能的影响。结果表明，ZnO微米线表面形成了粒径较为均一的纳米S-TiO2颗粒，硫掺杂TiO2中形成了Ti-O-S键；当硫掺杂量为0.8mol%并经500℃高温煅烧的复合光催化剂对菲的降解呈现出最好的光催化活性。

Study on preparation and photocatalytic activity of micro/nano-structured ZnO/ S-doped TiO2 composite

Micro/nano-structured ZnO/S-doped TiO2 composite (ZnO/S-TiO2) has been successfully prepared by hydrothermal method. The structure and morphology of the ZnO/S-TiO2 composite were characterized by SEM, XRD and XPS. The effect of dosage of sulfur doping into titanium dioxide and calcination temperature on photocatalytic activity of ZnO/S-TiO2 composite was discussed. The result indicated that Ti-O-S bond existed and homogeneous S doped TiO2 nanoparticles could be formed on the surface of ZnO. Under the conditions of 0.8 mol% of sulfur doping and the calcination temperature of 500℃, the synthesized photocatalyst exhibited the best photocatalytic activity for degradation of phenanthrene.