Facile synthesis and electrochemical properties of octahedral gold nanocrystals
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 preferentia...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Springer Netherlands
2011
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/13655 |
| Summary: | 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. |
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