材料工程Issue(5)：28-32,5.DOI:10.3969/j.issn.1001-4381.2013.05.006
化学还原法制备小粒径金纳米粒子
Preparation of Small Size Au Colloid by Chemical Reduction
丰荣娟 1李敏 1刘家祥1
作者信息
- 1. 北京化工大学材料科学与工程学院,北京 100029
- 折叠
摘要
Abstract
The colloidal gold nanoparticles were prepared by reducing chloroauric acid with NaBH4 in the presence of polyvinyl pyrrolidone (PVP).The influences of the amount of NaBH4 and PVP,reaction temperature and the order of adding NaBH4 on the morphology,particle size and dispersion of the synthesized gold nanoparticles are discussed.The gold nanoparticles' morphology and particle size distribution were characterized by transmission electron microscopy and UV-Vis spectroscopy.The results show that the optimized processing parameters for preparing gold nanoparticles with an average diameter of 4.3nm were worked out,the molar ratio of NaBH4 to chloroauric acid is 3.75∶1; the mass ratio of PVP to chloroauric acid is 1∶1; the reaction temperature is 100℃ ; the NaBH4 is added after chloroauric acid.The ways of influencing factors were explained and the reasons were analyzed.关键词
金纳米颗粒/化学还原/硼氢化钠/聚乙烯吡咯烷酮Key words
gold nanoparticle / chemical reduction / NaBH4 / PVP分类
通用工业技术引用本文复制引用
丰荣娟,李敏,刘家祥..化学还原法制备小粒径金纳米粒子[J].材料工程,2013,(5):28-32,5.
