Synthesis of Au nanorods in a low pH solution via seed-media method

doi:10.1088/1674-1056/23/8/087807

Abstract The gold (Au) nanorods with various aspect ratios are obtained by a seed-media method in low pH growth solution. Transmission electron microscopy (TEM) and UV-visible spectrophotometry are utilized to characterize the Au nanorods, and the longitudinal absorption peak positions of Au nanorods show different shifting trends of the growth evolutions in various low pH (1～ 3) solutions. Other influential factors on the shape of Au nanorod are also systematically studied under low pH reaction condition. The positions of longitudinal peak shift between 600 nm and 900 nm, with the aspect ratios of Au nanorods varying from 2 to 5 both in the simulation and experimental results. The simulation results are in agreement with experimental ones.

Keywords: Au nanorods seed-media method aspect ratio surface plasmon absorption

Received: 04 September 2013
Revised: 23 December 2013
Accepted manuscript online:

PACS:	78.67.Qa	(Nanorods)
	81.16.-c	(Methods of micro- and nanofabrication and processing)

Fund: Project supported by the Nippon Sheet Glass Foundation for Materials Science and Engineering (Japan, January 2012) and the Natural Science Foundation of Hubei Province of China (Grant No. 2011CDB426).

Corresponding Authors: Feng Jin-Yang, Zhao Xiu-Jian, Wang Moo-Chin
E-mail: fjy@whut.edu.cn;opules@whut.edu.cn;mcwang@kmu.edu.tw

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Ma Xiao (马晓), Feng Jin-Yang (冯晋阳), You Fang-Fang (游芳芳), Ma Juan (马娟), Zhao Xiu-Jian (赵修建), Wang Moo-Chin (王木琴) Synthesis of Au nanorods in a low pH solution via seed-media method 2014 Chin. Phys. B 23 087807

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