Development of microfabrication process of mesoporous Pt via "Solvent-Evaporation-Mediated Direct Physical Casting": Selective deposition into sloped microchannels

Yusuke Yamauchi, Hiroki Kitoh, Toshiyuki Momma, Tetsuya Osaka, Kazuyuki Kuroda

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We have developed an excellent process for selective deposition of mesoporous Pt through tailored microfabrication steps via the "Solvent-Evaporation-mediated Direct Physical Casting (SEDPC)" method. The direct observation by high-resolution scanning microscopy (HR-SEM) shows the formation of an ordered mesoporous structure in a very confined area. The cyclic voltammogram of the mesoporous Pt reveals a typical feature of Pt surface. The surface morphology and ordering of the mesostructure strongly depend on the electrodeposition conditions (constant-current and constant-potential depositions). The roughness factors are greatly enhanced as the charge densities in the constant-current deposition are increased. These findings are important for the morphological design of mesoporous metals in a micrometer scale.

Original languageEnglish
Pages (from-to)438-445
Number of pages8
JournalScience and Technology of Advanced Materials
Volume7
Issue number5
DOIs
Publication statusPublished - 2006 Jul 1

Keywords

  • Electrocatalyst
  • Electrodeposition
  • Electroplating
  • Lithography
  • Lyotropic liquid crystal
  • Mesoporous material
  • Mesoporous metal
  • Microchannel
  • Microfabrication
  • Platinum

ASJC Scopus subject areas

  • Materials Science(all)

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