摘要
使用氢醌还原氯金酸制得Au纳米粒子(粒径约20 nm),并在Au表面修饰不同链长的烷基硫醇(乙硫醇、正丁硫醇、1-己硫醇、辛硫醇、十二烷基硫醇和正十八烷基硫醇),探讨不同链长的硫醇对Au纳米粒子稳定性的影响.通过透射电子显微镜、紫外-可见分光光度计、Zeta电位仪对Au纳米粒子的结构与形貌及硫醇修饰的Au纳米粒子的稳定性进行表征,结果表明:硫醇加入量一定的情况下,硫醇链长越长Au纳米粒子的稳定性越好.
Spherical gold nanoparticles （GNPs） of approximately 20 nm were synthesized using the hydro- quinone reduction HAuC14 method and modified GNPs using the alkyl mercaptan with different chains （ eth- yl mereaptan, butyl mercaptan, 1-hexyl mercaptan, n-octyl mereaptan, dodecyl mercaptan and octadecyl mercaptan）. The particles have been characterised by UV-vis spectrophotometer, high resolution transmis- sion electron microscopy （TEM） and Zeta potential analyzer. The results showed that with the increase of alkyl length, the GNPs become stability under the same concentration conditions.
出处
《郑州轻工业学院学报（自然科学版）》
CAS
2013年第2期40-43,共4页
Journal of Zhengzhou University of Light Industry:Natural Science
基金
河南省高校科技创新人才支持计划项目(2008HASTIT019)
国家自然科学基金项目(20976168)
关键词
AU纳米粒子
硫醇
稳定性
gold nanoparticles
mercaptan
stability
