采用溶剂热法制备出Co掺杂的ZnIn2S4催化剂.用X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、紫外-可见(UV-Vis)漫反射光谱等技术对其进行了表征.XRD和XPS结果表明,Co成功地掺杂到ZnIn2S4晶格内.随着Co掺杂量增加,样品的吸收边发生红移,同时ZnIn2S4的微球形态会遭到破坏.光催化反应实验结果表明,Co2+掺杂提高了ZnIn2S4光催化性能,掺杂量为0.3%(w)时表现出最佳催化性能.并对可能的催化机理进行了讨论. Co-doped ZnIn2S4 catalysts were prepared by the solvothermal method.X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffuse reflectance spectroscopy XRD and XPS results showed that Co was successfully doped into the ZnIn2S4 crystal lattice.With the increase of Co doping amount, the absorption edge of the sample redshift and the microstructure of ZnIn2S4 will be destroyed. The results of photocatalytic reaction show that Co2 + doping improves the photocatalytic activity of ZnIn2S4, and exhibits the best catalytic performance when the doping amount is 0.3% (w) .A possible catalytic mechanism is discussed.