【作者】 牛佳莉； 朱涛； 刘忠范；

【Author】 Jia-Li Niu, Tao Zhu*, Zhong-Fan Liu Center for Nanoscale Science and Technology, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871

【机构】 北京大学纳米科学与技术研究中心,化学与分子工程学院；

【Abstract】 We proposed a new approach to the seed-mediated synthesis of large diameter spherical gold nanoparticles with uniform adjustable size by using 2-mercaptosuccinic acid (MSA) as both reducing and stabilizing agents. Through a simple one step seeding method, gold nanoparticles of diameter 30-150 nm were prepared with 5-8% standard deviation from 15.3 ± 1.5 nm seeds, at an optimized [HAuCl4]:[MSA] ratio of 1:0.6. Particle sizes could be controlled by varying the ratio of seed to gold salt. The presence of MSA, which is rather than the reducing agent but also stabilizing medium, is believed to have a great contribution to the formation of these large diameter spherical gold nanoparticles.更多还原