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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number1066
JournalNature Communications
Volume8
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1
Externally publishedYes

Fingerprint

Surface-Active Agents
Gold
surfactants
Surface structure
engineering
catalysts
Catalysts
gold
Electrocatalysis
Nanoparticles
Methanol
Surface treatment
Tuning
Metals
Oxygen
Oxidation
chemical reactions
methyl alcohol
tuning
nanoparticles

ASJC Scopus subject areas

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

Cite this

Engineering the internal surfaces of three-dimensional nanoporous catalysts by surfactant-modified dealloying. / Wang, Zhili; Liu, Pan; Han, Jiuhui; Cheng, Chun; Ning, Shoucong; Hirata, Akihiko; Fujita, Takeshi; Chen, Mingwei.

In: Nature Communications, Vol. 8, No. 1, 1066, 01.12.2017.

Research output: Contribution to journalArticle

Wang, Zhili ; Liu, Pan ; Han, Jiuhui ; Cheng, Chun ; Ning, Shoucong ; Hirata, Akihiko ; Fujita, Takeshi ; Chen, Mingwei. / Engineering the internal surfaces of three-dimensional nanoporous catalysts by surfactant-modified dealloying. In: Nature Communications. 2017 ; Vol. 8, No. 1.
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