A one-pot gold seed-assisted synthesis of gold/platinum wire nanoassemblies and their enhanced electrocatalytic activity for the oxidation of oxalic acid

Nanoscale
Juan BaiYu Chen

Abstract

Three-dimensional (3D) noble metal nanoassemblies composed of one-dimensional (1D) nanowires have been attracting much interest due to the unique physical and chemical properties of 1D nanowires as well as the particular interconnected open-pore structure of 3D nanoassemblies. In this work, well-defined Au/Pt wire nanoassemblies were synthesized by using a facile NaBH4 reduction method in the presence of a branched form of polyethyleneimine (PEI). A study of the growth mechanism indicated the morphology of the final product to be highly related to the molecular structure of the polymeric amine. Also, the preferred Pt-on-Pt deposition contributed to the formation of the 1D Pt nanowires. The Au/Pt wire nanoassemblies were functionalized with PEI at the same time that these nanoassemblies were synthesized due to the strong N-Pt bond. The chemically functionalized Au/Pt wire nanoassemblies exhibited better electrocatalytic activity for the electro-oxidation of oxalic acid than did commercial Pt black.

References

Nov 13, 2012·Chemical Society Reviews·YuYe J Tong
Apr 19, 2013·Journal of the American Chemical Society·John FennellSarah L Horswell
Jul 16, 2014·Analytical Chemistry·Thandavarayan MaiyalaganJoanna Niedziolka-Jönsson
Aug 20, 2014·Nanoscale·Jie YingBao-Lian Su
Aug 30, 2014·Journal of the American Chemical Society·Chengyi HuNanfeng Zheng
Jan 20, 2015·Journal of the American Chemical Society·Xun HongHua Zhang

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Citations

Dec 1, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Yingfang ZhangZhinong Gao
Dec 15, 2016·ACS Applied Materials & Interfaces·Juan BaiYu Chen

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