中文摘要：

采用浸渍法制备了载钴介孔石墨相氮化碳（Co3O4/mpg-C3N4）催化剂,并对其进行X 射线衍射（XRD）,红外光谱（FTGIR）,N2吸附脱附,紫外漫反射光谱（UVGvisDRS）和光生电流的表征. 结果显示,Co3O4 的引入提高了mpg-C3N4 的光吸收性能,利于其表面光生电子和空穴的分离. 将制得的Co3O4/mpg-C3N4 用于可见光催化降解水中的亚甲基蓝（MB）,其催化效率远高于mpg-C3N4,且最佳的钴负载量为3%.

英文摘要：

Cobalt modified mesoporous graphitic carbon nitride (Co3 O4/mpg-C3 N4 )was synthesized via a facile impregnation method.The as-synthesized catalyst was characterized by X-ray diffraction (XRD),Fourier trans-form infrared spectroscopy (FTIR),N2 adsorption-desorption analysis,UV-vis absorption spectra (UV-vis DRS)and Photocurrent transient measurement,respectively.It indicated that the addition of Co3 O4 could im-prove the light-absorbing ability of mpg-C3 N4 and enhance the separation efficiency of electron and hole on the catalyst surface.The Co3 O4/mpg-C3 N4 photocatalyst showed prominently enhanced photocatalytic activity for the degradation of methylene blue (MB)under visible-light irradiation than that of mpg-C3 N4 and an optimum content of cobalt doping in the mpg-C3 N4 was 3%.