Chem. J. Chinese Universities ›› 2017, Vol. 38 ›› Issue (5): 706.doi: 10.7503/cjcu20170061

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Growth of Gold Nanorods and Their Interaction with Ferric Chloride

HAN Linhuan, LI Kaifeng, CHEN Yanwei*()   

  1. Key Laboratory of UV-Emitting Materials and Technology of Ministry of Education, School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2017-01-23 Online:2017-05-10 Published:2017-04-20
  • Contact: CHEN Yanwei E-mail:yanweichen@nenu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.11174047)

Abstract:

Gold nanorods(AuNRs) with predetermined aspect ratios were obtained by the ferric chloride(FeCl3) selective etching method. Compared with the seed growth method, the FeCl3 selective etching method is simpler and faster. The etching reaction takes place preferentially at the tip of gold nanorods due to the higher reaction activity and the less surface passivation at the tips of the gold nanorod. By controlling the reaction time and the concentration of the etchant, the aspect ratio of the gold nanorods can be precisely controlled. The experimental results show that the reaction rate increased by increasing the concentrations of the etchant and the halide ion and the reaction temperature. The mechanism of metal ion etching was also disscussed.

Key words: Gold nanorods, Ferric chloride, Etching, Surface plasmon resonance

CLC Number: 

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