Facile control of surface crystallographic orientation of anodized nanoporous gold catalyst and its application for highly efficient hydrogen evolution reaction
Facile control of surface crystallographic orientation of anodized nanoporous gold catalyst and its application for highly efficient hydrogen evolution reaction
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DOI：
10.1016/j.jcat.2020.06.023
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发表时间：
2020-09-01
影响因子：
7.3
通讯作者：
Hirano, Yu
中科院分区：
文献类型：
--
作者：
Mie, Yasuhiro;Takayama, Haruka;Hirano, Yu
控制纳米结构催化剂的表面晶体取向有望有效地改善其催化性能。本文报道了一种简单的一步法制备阳极氧化纳米多孔金（NPG）电极，该电极具有可控的原子表面取向贡献。常规Au电极在35和500 mM HCl溶液中的阳极化分别产生具有相当数量的Au（111）和Au（100）表面的纳米多孔结构。前者表现出显着有效的析氢反应（HER）的电催化。所获得的结果表明，本方法是有价值的有效的催化剂的各种应用，利用纳米多孔结构的发展。(C)2020爱思唯尔公司All rights reserved.
Controlling the surface crystallographic orientation in a nanostructured catalyst is expected to be effective in improving its catalytic performance. Herein, a simple one-step method for producing an anodized nanoporous gold (NPG) electrode with a controlled contribution of atomic surface orientations is reported. Anodization of a conventional Au electrode in 35 and 500 mM HCl solutions produced nanoporous structures with a considerable amount of Au(111) and Au(100) surfaces, respectively. The former exhibited remarkably efficient electrocatalysis for the hydrogen evolution reaction (HER). The obtained results show that the present method is valuable for the development of effective catalysts for various applications utilizing nanoporous structures. (C) 2020 Elsevier Inc. All rights reserved.