利用聚乙烯吡咯烷酮制备银纳米粒子

The preparation of silver nanoparticles using poly(vinylpyrrolidone) as reductant

利用聚乙烯吡咯烷酮(PVP)的还原性,通过水热法还原Ag2O制备了Ag纳米粒子,并初步探讨了PVP作为还原剂的还原机理.利用X-ray粉末衍射(XRD)、透射电子显微镜(TEM)和选区电子衍射(SAED)对Ag纳米粒子进行了表征分析.实验结果发现,PVP在制备Ag纳米粒子的过程中可同时起到还原剂和表面活性剂的双重作用.

A simple approach has been demonstrated to the preparation of silver nanoparticles by the hydrothermal treating Ag2O and poly（vinylpyrrolidone） （PVP） in distilled water at 180℃. The structure, size and morphology of samples were measured by X-ray powder diffraction （XRD）, transmission electron microscopy （TEM） and selected-area electron diffraction （SAED）.