Facile synthesis and electrochemical properties of octahedral gold nanocrystals

Wang, Dawai, Huang, Jianshe, Liu, Yang, Han, Xinyi, and You, Tianyan (2011) Facile synthesis and electrochemical properties of octahedral gold nanocrystals. Journal of Nanoparticle Research, 13. pp. 157-163.

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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.

Item ID: 54405
Item Type: Article (Research - C1)
ISSN: 1572-896X
Keywords: nanocrystal; shape-control; single-crystal; cyclic voltammetry; electocatalytic activity
Funders: National Natural Science Foundation of China (NNSFC), Chinese Academy of Sciences (CAS), Foundation of Distinguished Young Scholars of Jilin Province (FDYS)
Projects and Grants: NNSFC no. 20605020, NNSFC no. 20875085, CAS KJCX2-YW-H11, FDYS no. 20060112
Date Deposited: 03 Jul 2018 04:42
FoR Codes: 03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030102 Electroanalytical Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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