MoS_2为基纳米复合材料的制备及性能研究进展

Review on Preparation and Properties of MoS_2 Based Nanocomposites

二硫化钼(MoS_2)是一种层状过渡族金属硫化物材料,由于其单层独特的电子结构及物理化学性能被广泛地应用在各个领域,包括光降解有机染料、电化学析氢及太阳能电池等方面。近几年,二硫化钼纳米材料由于比表面积较大、禁带宽度窄、优秀的电学性能及其较高的电子迁移率等,引起人们的强烈关注,但其内部存在缺陷,因此作为一种单一的半导体材料,限制了其在许多方面的应用。介绍了MoS_2的不同形貌结构及其最新的制备方法,除此之外,可以通过MoS_2界面改性处理的手段耦合其他半导体,增加其活性位点,降低电子空穴的复合速率,提高其循环稳定性。最后,对其在环境和能源方面的应用进行总结介绍。

MoS_2 is a prototype of layered transition metal dichalcogenides. Owing to its unique electronic structure and physical and chemical performance,it has been widely used in areas of photocatalytical degradation of organic dyes,electrochemical hydrogen evolution reaction,and solar cells,etc. In recent years,MoS_2 nanomaterials have drawn increased attention due to its high specific surface area,narrow band gap,excellent electrical properties and high electron mobility.However,its intrinsic defect structures limit its applications in many ways. This review introduces different preparation methods for MoS_2 with varied structure and morphologies. In addition,MoS_2-based functional materials can be engineered by the interface modification with increased active sites,which reduces the electron-hole recombination rate thus increases higher quantum yield and enhances the cycle stability. In the end,we review its applications in areas of environment and energy.