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arXiv · 1709.01376

3D Nanoporous Gold with Very Low Parting Limit Derived from Au-based Metallic Glass and Enhanced Methanol Electro-oxidation Catalytic Performance

Yi Xu·Pak Man Yiu·Guangcun Shan·Tamaki Shibayama·Seiichi Watanabe·Masato Ohnuma·Wei Huang·Chan-Hung Shek
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Abstract

Nanoporous gold (NPG) with bi-continuous ligaments and pores structure has promising potential in functional applications, among which one prominent example is fuel cell electrocatalyst. However, current application of NPG is mostly limited to methanol electro-oxidation due to its weak catalytic performance. Here we report a simple chemical dealloying process, for generating peculiar three-dimensional (3D) free-standing NPG with high specific surface area associated with a novel porous cone shaped protrusion morphology. This NPG structure possesses the highest specific activity of catalytic performance reported NPG catalysts so far.

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Yi Xu, Pak Man Yiu, Guangcun Shan, Tamaki Shibayama, Seiichi Watanabe, Masato Ohnuma, Wei Huang, Chan-Hung Shek. 2017-09-05. 3D Nanoporous Gold with Very Low Parting Limit Derived from Au-based Metallic Glass and Enhanced Methanol Electro-oxidation Catalytic Performance. https://doi.org/10.1002/cnma.201700170

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