Superior electrocatalytic activity of mesoporous Au film templated from diblock copolymer micelles

Cuiling Li, Bo Jiang, Hungru Chen, Masataka Imura, Liwen Sang, Victor Malgras, Yoshio Bando, Tansir Ahamad, Saad M. Alshehri, Satoshi Tominaka, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Mesoporous Au films consisting of a network of interconnected Au ligaments around ultra-large pores were found to exhibit a promising electrocatalytic activity towards sluggish reactions. Mesoporous Au films with pore sizes up to 25 nm were successfully fabricated using a polymeric micelle approach. A superior catalytic activity of the mesoporous Au films towards methanol oxidation was confirmed, which was thoroughly analyzed and compared with that of other Au materials. An intrinsic investigation on the high catalytic activity revealed that the superior performance of the as-prepared mesoporous Au film was related to its unique atomic structures around the mesopores with well-crystallized facets and several step/kink sites on the Au surfaces. These findings showcase a strategic and feasible design for preparing highly active Au-based catalysts that could be used as promising candidates in electrocatalytic applications.

Original languageEnglish
Pages (from-to)1752-1762
JournalNano Research
Volume9
Issue number6
Early online date21 Apr 2016
DOIs
Publication statusPublished - Jun 2016

Keywords

  • block copolymers
  • electrocatalysts
  • gold
  • mesoporous materials
  • mesoporous metals

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