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.
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