Dealloyed porous gold anchored by in situ generated graphene sheets as high activity catalyst for methanol electro-oxidation reaction

Hui Xu; Shuai Liu; Xiaoliang Pu; Kechang Shen; Laichang Zhang; Xiaoguang Wang; Jingyu Qin; Weimin Wang

doi:10.1039/C9RA09821F

Dealloyed porous gold anchored by in situ generated graphene sheets as high activity catalyst for methanol electro-oxidation reaction†

Hui Xu,

*^ab Shuai Liu,

^b Xiaoliang Pu,^b Kechang Shen,^c Laichang Zhang,^d Xiaoguang Wang,

^e Jingyu Qin^b and Weimin Wang

*^b

Author affiliations

* Corresponding authors

^a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, International Joint Laboratory for Advanced Fiber and Low-dimension Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
E-mail: xuhui199278@dhu.edu.cn

^b Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China
E-mail: weiminw@sdu.edu.cn

^c Ulsan Ship and Ocean College, Ludong University, Yantai 264025, China

^d School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, Perth, Australia

^e Laboratory of Adv. Mater. & Energy Electrochemistry, Taiyuan University of Technology, Taiyuan 030024, China

Abstract

A novel one-step method to prepare the nanocomposites of reduced graphene oxide (RGO)/nanoporous gold (NPG) is realized by chemically dealloying an Al₂Au precursor. The RGO nanosheets anchored on the surface of NPG have a cicada wing like shape and act as both conductive agent and buffer layer to improve the catalytic ability of NPG for methanol electro-oxidation reaction (MOR). This improvement can also be ascribed to the microstructure change of NPG in dealloying with RGO. This work inspires a facile and economic method to prepare the NPG based catalyst for MOR.

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DOI: https://doi.org/10.1039/C9RA09821F
Article type: Paper
Submitted: 23 Nov 2019
Accepted: 23 Dec 2019
First published: 09 Jan 2020
This article is Open Access

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RSC Adv., 2020,10, 1666-1678

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Dealloyed porous gold anchored by in situ generated graphene sheets as high activity catalyst for methanol electro-oxidation reaction

H. Xu, S. Liu, X. Pu, K. Shen, L. Zhang, X. Wang, J. Qin and W. Wang, RSC Adv., 2020, 10, 1666 DOI: 10.1039/C9RA09821F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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Dealloyed porous gold anchored by in situ generated graphene sheets as high activity catalyst for methanol electro-oxidation reaction†

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Dealloyed porous gold anchored by in situ generated graphene sheets as high activity catalyst for methanol electro-oxidation reaction

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