藤茶干粉提取液还原制备金纳米粒子

doi:10.3724/SP.J.1095.2014.30292

摘要/Abstract

摘要： 用藤茶干粉提取液生物还原氯金酸溶液实现了金纳米粒子绿色制备，通过紫外-可见分光光度计、透射电子显微镜和粒度分布等技术手段对金纳米粒子形态等物性进行了表征，运用控制变量法探究了金纳米粒子生物合成的规律。研究发现，金纳米粒子的粒径、粒径分布、形状和稳定性受反应体系pH值、温度以及氯金酸的用量影响。 pH＞6.47或藤茶干粉提取液过量时会引起纳米金的团聚；温度升高，金纳米粒子平均粒径会减小。通过变量控制，可以实现金纳米粒子绿色合成的有效控制。

关键词: 金纳米粒子, 藤茶干粉提取液, 生物还原法

Abstract: Gold nanoparticles were prepared by a bioreduction of chloroauric acid with vine tea powder extracts, and characterized by UV-Vis, TEM and size distribution. The process of biosynthesis was investigated by control variate method. The results show that pH of the reaction solution, temperature and the quantities of the chloroauric acid all have significant effects on the particle size, size distribution, morphology and stability of gold nanoparticles. At pH＞6.47 or in the presence of excess vine tea powder extracts, gold nanoparticles tend to agglomerate and the size of gold nanoparticles increases with the temperature increasing. Therefore, an effective controllable green synthesis of gold nanoparticles can be realized by control variate method.

Key words: gold nanoparticles, vine tea powder extracts, bioreduction

中图分类号:

O614.1

郭秋兰, 郭清泉, 罗汝洪, 谭迪聪, 赖香峰, 郭少峰. 藤茶干粉提取液还原制备金纳米粒子[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30292.

GUO Qiulan, GUO Qingquan*, LUO Ruhong, TAN Dicong, LAI Xiangfeng, GUO Shaofeng. Biosynthesis of Gold Nanoparticles Using Vine Tea Powder Extracts[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30292.

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