MoS_2纳米材料化学合成工艺流程的研究

STUDY ON CHEMOSYNTHESIS PROCESS FLOW OF MOLYBDENUM DISULFIDES NANOMATERIALS

对化学合成MoS2纳米材料的工艺流程进行了研究,从技术、经济和环境保护等的角度评估了各种工艺流程。研究结果证明,化学气相沉积法(CVD流程)的工艺步骤最短、无过滤和干燥工序、[s]/[Mo]的克分子比值最低、无废水、废气组成最简单、废气容易回收利用,最具有工业放大价值;其中有待开发的项目是固体催化剂和液体模板等。其他3种湿法流程包括后还原沉淀法、先还原沉淀法以及水热法等。它们在工艺步骤、硫化物原料消耗、废气、废水方面存在明显差别,其中的水热法具有工艺步骤较短、硫化物原料耗量较少以及免除了含有硫化氢的废气等明显优势,因此,水热法在湿法工艺流程中独占鳌头,优势明显。为了制备纳米MoS2涂层薄膜材料,应当努力开展溶胶-凝胶流程的研究;为了制备MoS2纳米管材料,应当努力开展环状有机硫化合物,即液体模板的研究以及有序固体模板的研究。

The preparation processes of MoS2 nanomaterials were studied.The processes were evaluated on the aspect of the performance of technique,economy,environmental protect.The study results show that the chemical vapor deposition（CVD）process precedes the wet process in which precipitation process of front reduction and back reduction,hydrothermal synthesis are included.The advantages of CVD synthesis process consist of work step,sulfur consume,filtration,dryness,waste liquid,waste gas.The precipitation process of front reduction, the precipitation process of back reduction as well as hydrothermal synthesis is that each has its strong point, but the hydrothermal process is better than the others. In order to manufacture thin film of MoS2 , the Sol - Gel process must be developed.