Fabrication of a Pt film with a well-defined hierarchical pore system via "solvent-evaporation-mediated direct physical casting"

Yusuke Yamauchi, Kazuyuki Kuroda

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.

Original languageEnglish
Pages (from-to)1677-1682
Number of pages6
JournalElectrochemistry Communications
Volume8
Issue number10
DOIs
Publication statusPublished - 2006 Oct 1

Keywords

  • Colloidal crystal templating
  • Electrode material
  • Hierarchical structure
  • Lyotropic liquid crystal
  • Mesoporous metal
  • Platinum

ASJC Scopus subject areas

  • Electrochemistry

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