聚乙烯基吡咯烷酮稳定银纳米粒子的合成

2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems Pub Date : 2007-04-23 DOI:10.1109/NEMS.2007.352208

Doungpom Yiamsawas, Vichuta Lauruengtana, U. Ruktanonchai, Wiyong Kangwansupamongkon

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引用次数: 2

摘要

以聚乙烯吡咯烷酮、PVP为分散剂，采用化学还原法制备了分散良好的纳米银。通过反应体系的光学性质，探讨了PVP在制备过程中的作用机理。结果表明，PVP具有稳定氢离子的作用，加速了银离子与葡萄糖的反应。PVP与银复合，可抑制银颗粒的生长和团聚。短句来源以[PVP]: [AgNO3]的45倍和PVP的1.5倍分子量制备出粒径小、分散性好的银颗粒。

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Synthesis of Poly(vinyl pyrrolidone)-Stabilized Silver Nanoparticles

Well-dispersed silver nanoparticles were prepared by chemical reduction method, with poly(vinyl pyrrolidone), PVP as dispersant. The mechanisms of PVP in the preparation process were discussed though the optical characters of the reaction system. It is indicated that PVP accelerated the reaction between silver ions and glucose, because it stabilized H+. PVP compounded with Ag and protected the Ag particles from growing and agglomerating. Ag particles with small size and good dispersibility were obtained from 45 of [PVP]: [AgNO3] and 15,000 of PVP molecular weight.

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2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems

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