Acta Phys. -Chim. Sin. ›› 2015, Vol. 31 ›› Issue (6): 1186-1190.doi: 10.3866/PKU.WHXB201504012

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles     Next Articles

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.

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