Sulfide-graphene oxide composites photocatalysts were fabricated through a simple solid-state chemical reaction method under different synthesis conditions. The resulting photocatalysts were characterized by X-ray diffraction, transmission electron microscopy, Nitrogen adsorption-desorption specific surface areas, XPS measurements, UV–vis absorption spectroscopy, Transient photocurrent, and Photoluminescence spectra. The result suggests that ZnS and Bi₂S₃ nanoparticles well distributed on the graphene oxide nanosheets in the sulfide-graphene oxide composites. Nitrogen adsorption-desorption results indicate that the specific surface areas of the composites increased after the graphene oxide is introduced. XPS measurements suggest that there are interactions between sulfide and graphene oxide. The photocatalytic activities of sulfide-graphene oxide composites were measured by the degradation of methyl orange under UV irradiation. Variation of the synthesis conditions allowed the sulfide-graphene oxide composites possessing different structures and photocatalytic activities as revealed by transmission electron microscopy and photocatalytic measurements. The photocatalytic results indicated that the sulfide-graphene oxide composites exhibited much higher photocatalytic activities than that of pure ZnS and Bi₂S₃, and nearly 97% and 90% of methyl orange were degraded over ZnS-graphene oxide and Bi₂S₃-graphene oxide after irradiation for 120 min, respectively. The superior photocatalytic activities can be attributed to the high specific surface areas, which is benefical for improving photocatalytic reaction. Futhermore, introducing graphene oxide can effectively reduce the photoinduced electron-hole pair recombination probability, and then improve the photocatalytic activities, which have been proved by the transient photocurrent, photoluminescence spectra, and scavengers measurements.

通过简单的固态化学反应方法，在不同的合成条件下，制备了硫化物-氧化石墨烯复合光催化剂。所得的光催化剂通过X射线衍射，透射电子显微镜，氮吸附-解吸比表面积，XPS测量，UV-vis吸收光谱，瞬态光电流和光致发光光谱进行了表征。结果表明ZnS和Bi ₂ S ₃纳米粒子良好地分布在硫化物-氧化石墨烯复合材料的氧化石墨烯纳米片上。氮吸附-解吸结果表明，引入氧化石墨烯后，复合材料的比表面积增加。XPS测量表明，硫化物和氧化石墨烯之间存在相互作用。硫化物-氧化石墨烯复合物的光催化活性通过甲基橙在紫外线照射下的降解来测量。合成条件的变化使得硫化物-氧化石墨烯复合物具有不同的结构和光催化活性，这是通过透射电子显微镜和光催化测量所揭示的。照射120分钟后，ZnS-氧化石墨烯和Bi ₂ S _3-氧化石墨烯分别降解₂ S ₃和近97％的甲基橙和90％的甲基橙。优异的光催化活性可以归因于高的比表面积，这对于改善光催化反应是有益的。此外，引入氧化石墨烯可以有效地降低光诱导的电子-空穴对的重组概率，然后提高光催化活性，这已经通过瞬时光电流，光致发光光谱和清除剂测量得到了证明。