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

Fingerprint

Microfabrication
Microchannels
Casting
Evaporation
Charge density
Electrodeposition
Surface morphology
Microscopic examination
Surface roughness
Metals
Scanning
Scanning electron microscopy

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

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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.",
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author = "Yusuke Yamauchi and Hiroki Kitoh and Toshiyuki Momma and Tetsuya Osaka and Kazuyuki Kuroda",
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T2 - Selective deposition into sloped microchannels

AU - Yamauchi, Yusuke

AU - Kitoh, Hiroki

AU - Momma, Toshiyuki

AU - Osaka, Tetsuya

AU - Kuroda, Kazuyuki

PY - 2006/7

Y1 - 2006/7

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KW - Platinum

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