Journal of Nanoparticle Research

, Volume 13, Issue 1, pp 157–163

Facile synthesis and electrochemical properties of octahedral gold nanocrystals

Authors

  • Dawei Wang
    • State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences
  • Jianshe Huang
    • State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences
  • Yang Liu
    • State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences
  • Xinyi Han
    • State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences
    • State Key Laboratory of Electroanalytical ChemistryChangchun Institute of Applied Chemistry, Chinese Academy of Sciences
Research Paper

DOI: 10.1007/s11051-010-0014-3

Cite this article as:
Wang, D., Huang, J., Liu, Y. et al. J Nanopart Res (2011) 13: 157. doi:10.1007/s11051-010-0014-3

Abstract

High-yield octahedral gold nanocrystals of ~45 nm in size have been facilely synthesized by one-pot reduction of HAuCl4 using formic acid in cetyltrimethylammonium bromide (CTAB) aqueous solution. The results showed that CTAB can promote the formation of single-crystalline nucleation and preferentially adsorb on the (111) planes of gold nanocrystals, resulting in the formation of octahedral gold nanocrystals. Formic acid acted as not only a mild reducing agent, but also could promote the formation of (111) facet. The octahedral gold nanocrystals exhibited similar cyclic voltammetry (CV) curves to single-crystal Au (111) electrode and excellent electrocatalytic activity for methanol oxidation. This synthetic strategy may open new route for facile synthesis of shape-controlled metal nanoparticles.

Keywords

Nanocrystal Shape-control Single-crystal Cyclic voltammetry Electrocatalytic activity

Supplementary material

11051_2010_14_MOESM1_ESM.doc (3.2 mb)
(DOC 3281 kb)

Copyright information

© Springer Science+Business Media B.V. 2010