MoS2在石墨烯/聚酰亚胺基底上的电化学制备及半导体光电性能研究

将不同纳米结构的MoS2制备在石墨烯/聚酰亚胺复合基底表面，然后通过研究形貌、结构与性能关系，揭示该半导体光电催化材料的相关科学问题。项目策略包括首先合成结晶性能优良、导电性好、在±200℃温区稳定、加工性能好的石墨烯/聚酰亚胺电极材料；然后以电化学原子层外延技术为主、结合循环伏安法等电化学技术，在该电极材料表面构建从单层到有限多层的MoS2纳米薄膜和纳米线，获得布状、可折叠剪裁的MoS2/石墨烯/聚酰亚胺复合材料；通过表面形态分析手段（如原子力显微镜等）、内部结构分析手段（如x-射线光电子能谱和衍射谱）和光电性能分析方法（如光电流-时间曲线以及电流-电位曲线技术），研究该材料与光电催化、光电转换性能的关系；将所研制的材料用于水的催化析氢、太阳能转换等相关研究方向，从理论和实践上探寻该新材料在新能源方面的潜在应用价值。

The goal of this proposal is to prepare MoS2 with different nanostructures onto the surface of grephene(GE)/polyimide(PI) composite substrate. Then the relationship between morphous and property, structure and property will be systematically studied so as to reveal some scientific matter related this prepared materials for semiconductor photoelectrocatalysis. To realize the goal, the GE/PI substrate that possesses the property of superordinary crystallization, good conductivity, stable in temperature region ±200℃ and good processing performance will be synthetized firstly. Then the photoelectrocatalyticly active MoS2, from monolayer to multilayer and to nanowire, will be prepared separately onto the substrate to form MoS2/ GE/PI composited materials by using the electrochemical methods including electrochemical atomic layer epitaxy(EC-ALE) and cyclic voltammetry(CV). The prepared MoS2/GE/PI composited materials will be cloth-like and tailorable. The photoelectrocatalysis and the opto-electrical divert properties of the prepared materials will be characterized by using atomic force microscope(AFM), x-ray photoelectron spectrometry(XPS), photocurrent-time(I-T) and current-voltage (I-V)measurements. The application prospect of the materials in the fields of photocatalytic H2 evolution and solar energy conversion will be furtherly probed.