Engineering the internal surfaces of three-dimensional nanoporous catalysts by surfactant-modified dealloying

Zhili Wang, Pan Liu, Jiuhui Han, Chun Cheng, Shoucong Ning, Akihiko Hirata, Takeshi Fujita, Mingwei Chen*

*この研究の対応する著者

研究成果: Article査読

53 被引用数 (Scopus)

抄録

Tuning surface structures by bottom-up synthesis has been demonstrated as an effective strategy to improve the catalytic performances of nanoparticle catalysts. Nevertheless, the surface modification of three-dimensional nanoporous metals, fabricated by a top-down dealloying approach, has not been achieved despite great efforts devoted to improving the catalytic performance of three-dimensional nanoporous catalysts. Here we report a surfactant-modified dealloying method to tailor the surface structure of nanoporous gold for amplified electrocatalysis toward methanol oxidation and oxygen reduction reactions. With the assistance of surfactants, {111} or {100} faceted internal surfaces of nanoporous gold can be realized in a controllable manner by optimizing dealloying conditions. The surface modified nanoporous gold exhibits significantly enhanced electrocatalytic activities in comparison with conventional nanoporous gold. This study paves the way to develop high-performance three-dimensional nanoporous catalysts with a tunable surface structure by top-down dealloying for efficient chemical and electrochemical reactions.

本文言語English
論文番号1066
ジャーナルNature communications
8
1
DOI
出版ステータスPublished - 2017 12月 1
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 生化学、遺伝学、分子生物学(全般)
  • 物理学および天文学(全般)

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