物理化学学报 >> 2015, Vol. 31 >> Issue (6): 1186-1190.doi: 10.3866/PKU.WHXB201504012

材料物理化学 上一篇    下一篇

一步湿化学法合成超细金纳米线

徐海英1,2, 阚彩侠1, 王长顺1, 倪媛1, 刘津升1, 徐伟1, 柯军华1   

  1. 1 南京航空航天大学理学院应用物理系, 南京211106;
    2 南京工程学院数理部, 南京211167
  • 收稿日期:2015-01-19 修回日期:2015-03-30 发布日期:2015-06-05
  • 通讯作者: 阚彩侠 E-mail:cxkan@nuaa.edu.cn
  • 基金资助:

    国家自然科学基金(11274173), 中央高校基本科研专项资金(NZ2015101, NJ20140005), 江苏省研究生培养创新工程(KYZZ_0091)及江苏省青蓝工程资助项目

Ultrafine Au Nanowires Synthesized via One-Step Wet Chemical Method

XU Hai-Ying1,2, KAN Cai-Xia1, WANG Chang-Shun1, NI Yuan1, LIU Jin-Sheng1, XU Wei1, KE Jun-Hua1   

  1. 1 Department of Applied Physics, College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, P. R. China;
    2 Department of Mathematics and Physics, Nanjing Institute of Technology, Nanjing 211167, P. R. China
  • Received:2015-01-19 Revised:2015-03-30 Published:2015-06-05
  • Contact: KAN Cai-Xia E-mail:cxkan@nuaa.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (11274173), Fundamental Research Funds for the Central Universities, China (NZ2015101, NJ20140005), Funding of Jiangsu Innovation Program for Graduate Education, China (KYZZ_0091), and Qing Lan Project of Jiangsu Province, China.

摘要:

以氯金酸(HAuCl4)为前驱物, 油胺同时作为溶剂、表面稳定剂和还原剂, 通过简单的一步湿化学法合成超细金纳米线. 制备出的超细金纳米线不仅产量高、纯度高, 而且纵横比大, 纳米线平均直径~2 nm, 长度可达数十微米. 如果添加另一种还原剂油酸并调节油胺和油酸的体积比为1:1, 将生成直径为~9 nm的金纳米线. 通过改变反应温度和还原剂用量, 对该种超细金纳米结构的生长机制进行阐述说明: 以油胺为模板, 在油胺和一价金卤化物(AuCl)亲金键合形成的一维聚合链作用下, 被还原的金原子附着在已成核颗粒表面, 一维地生长成超细金纳米线.

关键词: 准一维, 超细, 金纳米线, 湿化学法, 生长机制

Abstract:

Ultrafine Au nanowires (AuNWs) were synthesized in high yields by a one-step wet chemical method using oleylamine as the solvent, surfactant, and reductant. The obtained AuNWs were of high purity and had a high aspect ratio, with diameters of ~2 nm and lengths of tens of micrometers. AuNWs of diameter ~9 nm were also obtained in the presence of oleic acid, at an oleic acid:oleylamine volume ratio of 1:1. The formation of AuNWs was studied by changing the reaction temperature and the volume of oleylamine. It is proposed that the growth mechanism of the Au nanostructures involves strong aurophilic interactions from oleylamine-AuCl complexes; the reduced Au atoms agglomerate and attach to preformed particles, and the oleylamine molecular layer acts as a soft template, leading to one-dimensional growth of Au atoms into AuNWs.

Key words: Quasi-one-dimension, Ultrafine, Au nanowire, Wet chemical method, Growth mechanism

MSC2000: 

  • O648