银纳米线的溶剂热法制备及表征

Solvothermal Preparation and Characterization of Silver Nanowires

以硝酸银为银源、聚乙烯吡咯烷酮(K-30)为模板剂和包覆剂、葡萄糖为还原剂、乙二醇为溶剂,采用溶剂热法成功制备出银纳米线。采用X-射线衍射(XRD)、扫描电子显微镜(SEM)、紫外可见吸收光谱(UV-Vis)、热重(TG)等手段对银纳米线进行了表征。结果表明,在反应温度为160℃、反应时间为4h、聚乙烯吡咯烷酮(K-30)与硝酸银物质的量比为5的条件下,制备出直径100~150nm、长度10~20μm的银纳米线。XRD物相分析表明,产物为结晶度较高、具有面心立方结构的纯银纳米线。

Using silver nitrate as a silver source,poly-vinylpyrrolidone（K-30）as a template and a covered agent,glucose as a reducing agent,and ethylene glycol as a solvent,we prepared silver nanowires by a solvothermal method.We characterized the silver nanowires by X-ray diffraction（XRD）,scanning electron microscope（SEM）,ultraviolet-visible absorption spectrum（UV-Vis）and thermogravimetry（TG）.Results show that we can prepare silver nanowires with diameter of 100~150nm,and length of 10~20μm under the conditions as follows：reaction temperature of 160℃,reaction time of 4h,and molar ratio of poly-vinylpyrrolidone（K-30）and silver nitrate of 5.XRD phase analysis shows that the prepared silver nanowires have a high degree of crystallization and face-centered cubic structure.