纳米二硫化钼氧化石墨烯复合材料的制备及催化性能研究

采用鳞片石墨及四硫代钼酸铵为初始反应物,通过热分解方法制备纳米二硫化钼氧化石墨烯（Mo S2/GO）复合材料。采用X射线衍射、扫描电镜和透射电子显微镜对所制备的纳米Mo S2/GO复合材料进行了表征。结果表明：纳米Mo S2颗粒均匀分布在氧化石墨烯片层表面,形成纳米Mo S2/GO复合材料,增大了纳米Mo S2比表面积,同时减轻了纳米Mo S2的团聚。研究了纳米Mo S2/GO复合材料在煤加氢热解中的催化性能,结果表明：与纳米Mo S2颗粒相比,纳米Mo S2/GO具有更高的催化活性。

STUDY ON THE PREPARATION AND CATALYTIC ACTIVITY OF NANO-MoS_2/ GO MATERIALS

The nano-MoS2/ GO materials were prepared by thermal decomposition using ammonium tetrathiomolybdate and graphite oxide aqueous solution as the precursor. The structure and microscopy of nano-MoS2/ GO materials were characterized by X-ray diffraction,scanning electron microscopy and transmission electron microscopy.The results of analysis indicate that MoS2 nanoparticles uniformly distribute in the graphite oxide graphene sheets.The graphite oxide graphene sheets not only increased the specific surface area but also reduced the agglomeration of nano-MoS2 particles. The catalytic activity of nano-MoS2/ GO materials in the coal catalytic hydropyrolysis was studied. The results showed that the catalytic activity of nano-MoS2/ GO materials had been enhanced compared with nano-MoS2 particles.