中文摘要：

在PVP（聚乙烯基吡咯烷酮）做表面活性剂情况下,用乙醇做溶剂和还原剂还原AgNO3,制备形状可控的Ag纳米颗粒.通过改变表面活性剂用量,在不同反应温度和不同保温时间下可制成各种尺度的球形、正三角形、正六边形的Ag纳米颗粒.探讨表面活性剂与原料配比、反应温度和保温时间对结果的影响.采用透射电镜以及紫外可见吸收光谱等手段对所制得的粉末进行表征.

英文摘要：

A facile synthetic process to produce silver nanoparticles with controllable shapes using Poly （vinyl pyrrolidone） （PVP） as surfactant is introduced. The shapes of silver nanoparticles have kept successfully in tune among quasi-spherical, right triangular and right hexagon at shapes by introducing different amounts of poly（vinyl pyrrolidone） （PVP）, and changing the molar ratio between the raw materials of PVP and AgNO3, and the aging temperature as well as the holding time of aging temperature. The morphology of the synthesized nanoparticles （NPs） was observed with Hitachi H-800 transmission electron microscopy （TEM） and the spectrum analysis was carried out by altra-violet visualized absorption spectrometry, and son on.