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

研究成果: Article

16 引用 (Scopus)

抜粋

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.

元の言語English
記事番号1066
ジャーナルNature Communications
8
発行部数1
DOI
出版物ステータスPublished - 2017 12 1
外部発表Yes

    フィンガープリント

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

これを引用