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Journal of Nanomaterials
Volume 2016, Article ID 5812739, 8 pages
http://dx.doi.org/10.1155/2016/5812739
Research Article

A Novel Discovery of Growth Process for Ag Nanowires and Plausible Mechanism

1National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
2Department of Applied Physics, Nanjing University of Technology, Nanjing 210009, China
3College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211100, China

Received 12 June 2016; Accepted 31 August 2016

Academic Editor: Nathan C. Lindquist

Copyright © 2016 Jiejun Zhu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A novel growth process of silver nanowires was revealed by tracing the morphology evolution of Ag nanostructures fabricated by an improved polyol process. A mixture of Ag nanowires and nanoparticles was obtained with the usage of PVP-K25 (MW = 38,000). The products sampled at different reaction time were studied in detail using UV-visible absorption spectra and transmission electron microscopy (TEM). An interesting phenomenon unknown in the past was observed where Ag nanoparticles undergo an important dissolution-recrystallization process and Ag nanowires are formed at the expense of the preformed Ag nanoparticles. A plausible novel growth mechanism for the silver nanowires was proposed.