以半胱氨酸和锌粉为前驱物大量制备硫化锌纳米粉体

Scalable Preparation of Zn S Nanopowder from Cysteinate and Zinc Powder

硫化锌纳米粉体的简便、大量制备将是其在工业上实际应用的物质基础。以金属锌粉和半胱氨酸为锌、硫源,并在水溶液中及常压下反应制取半胱氨酸锌复合物,然后在空气中热处理半胱氨酸锌,通过断裂该复合物中的C-S键便大量制得Zn S纳米粉体。通过扫描电子显微镜(SEM)、能量散射谱(EDX)、X射线衍射仪(XRD)、红外光谱(IR)、差热分析(TG-DSC)和比表面(BET)等系统地表征可知,Zn S纳米粉体是来自于中间物半胱氨酸锌的分解,并具有纳米尺寸和介孔结构。这种价格低廉、对环境友好的合成路线对于大量制备硫化锌纳米粉体具有重要的技术性和科学性。

The economical and large- scale preparation of zinc sulfides nanopowder（ NP） would determine its practical industrial application. In this contribution,Zn S NP has been harvested by thermolysis of a single source zinc cysteinate obtained conveniently from the reaction between zinc powder and cysteine in aqueous environment and constant atmosphere in glassware. The characterizations including SEM,EDX,XRD,FT- IR,TG- DSC and BET confirmed that the as- synthesized products are from the decomposition of metal cysteinate,of nanoscale in size,and of mesoporous materials. The low cost and benign environment made this route technologically and scientifically interesting for the preparation of zinc sulfides NP.