Synthesis of highly faceted multiply twinned gold nanocrystals stabilized by polyoxometalates
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Published on: July 9, 2015
Junhua Yuan1, Yuanxian Chen, Dongxue Han
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, Changchun 130022, People's Republic of China. Department of Pharmaceutics, Xianning College, Xianning 437100, People's Republic of China.
Abstract:
A novel and facile chemical synthesis of highly faceted multiply twinned gold nanocrystals is reported. The gold nanocrystals are hexagonal in transmission electron microscopy and icosahedral in scanning electron microscopy. Phosphotungstic acid (PTA), which was previously reduced, serves as a reductant and stabilizer for the synthesis of gold nanocrystals. The PTA-gold nanocomposites are quite stable in aqueous solutions, and electrochemically active towards the hydrogen evolution reaction.
