金属硫属化合物“类石墨烯”纳米结构的化学合成及应用研究

Two dimensional metal chalcogenides (MCs) nanomaterials with graphene like structures possess more structural parameters that could be manipulated compared with the pure-carbon graphene, thus exhibiting the important scientific research meanings and promising applications in the field of optic and electronic devices, energy conversion and storage. How to establish a facile and robust synthetic strategy to control the sizes, morphologies, thicknesses, composites and surface states of MCs graphene analogues, so as to achieve the MCs nanostructures with excellent properties, is a focus of current nanomaterials research. In this project, we put forward the large scale synthesis of graphene analogues of single or multiple-layer MCs nanomaterials, and explore their unique physical and chemistry properties and potential applications. We plan to perform liquid refluxing method, which based on the thermo-decomposing the proper precursors in the high-boiling point solvents. Through adjusting the reaction parameters, the high quality MCs graphene analogues nanomaterials with monodisperse and controlled sizes, morphologies, thicknesses and composites will be prepared. Followed by the assemblies and devices constructions, the utilizations of MCs graphene analogues nanomaterials in the field of optic and electronic devices, energy conversion and storage will be demonstrated. This research results can provide the new principles and methods to synthesize the high performance two dimensional MCs, and further explore their real applications.

具有"类石墨烯"结构的金属硫属化合物二维纳米材料体系，拥有比纯碳石墨烯更多的调控参数，在光电器件和能量转换存储等领域都有重要科学价值和应用前景。如何建立简单普适的合成策略，有效调控"类石墨烯"结构金属硫属化合物纳米材料的尺寸形貌、厚度、相态及表面状态等，高效制备性能优异的金属硫属化合物"类石墨烯"结构，是目前纳米材料研究中面临的焦点问题。本课题提出大规模制备具有"类石墨烯"结构的单层或多层金属硫属化合物纳米材料，并探索其独特物化性质和应用前景。拟采用液相回流法，在含有稳定剂的高沸点溶剂中，加入合适前驱体，通过控制反应条件，获得单分散、尺寸形貌、厚度、组成可控的高质量金属硫属化合物"类石墨烯"结构，对其进行组装构建模型器件，最终得到在实际光电器件和能量转化存储等领域中应用的纳米材料。本课题研究成果将有助提供构建高性能金属硫属化合物二维薄层纳米材料的新原理和新方法，进一步拓展它们的实际应用。

本课题围绕具有"类石墨烯"结构的二维纳米材料的制备，构效关系及应用展开系统研究，在"类石墨烯"纳米结构的可控制备、表面修饰、性质调控及能源转换与存储应用等方面取得了一系列创新性研究成果。（a）采用湿化学合成法，通过控制反应参数，获得了形貌、横向尺寸、厚度及组成可控的单分散"类石墨烯"结构纳米材料；（b）所获得的"类石墨烯"结构纳米材料具有丰富的性质且与其结构密切相关；（c）通过将"类石墨烯"纳米结构进行组装复合，最终得到了在实际能源转换与存储等应用领域中的纳米材料。在构建高性能二维薄层纳米材料方面，本课题的研究成果将有助于提供新的合成方法和原理，从而进一步拓展它们的实际应用。