乙二醇水热还原法制备纳米银

Preparation of Silver Nanoparticles by Hydrothermal Reduction of Ethylene Glycol

利用乙二醇在高温下的还原特性,在水热条件下制备了纳米银粒子,并通过透射电镜、X射线衍射、紫外吸收光谱对其结构进行了表征。研究结果表明:所制备的纳米银具有面心立方相的多晶结构,平均粒径在30nm左右,紫外吸收峰的位置在380nm左右。分散剂和体系中含水量对纳米银的粒径有一定影响。

Ethylene glycol was used as the solvent and reductant for preparation of silver nanoparticles with the method of hydrothermal reduction. The structure of the particles was characterized by X-ray diffraction（XRD）, transmission electron microscopy（TEM） and UV-Vis adsorption spectrum. The results indicated that the silver nanoparticles have fcc polycrystalline structure and the mean diameter is about 30nm. The absorption peak is about 380nm. The influences of dispersant and water content on the size of silver particles were also studied.