Fabrication of nanostructured Pt electrodes templated by nanoporous anodic alumina for electrochemical sensors

Ivan Turkevych, Nobuko Fukuda

Research output: Contribution to journalArticlepeer-review

Abstract

Although platinum electrodes are widely used in electrochemical sensors their functionality can be affected by formed components of complex biological fluids. We demonstrated a simple approach to the formation of Pt nanopillars sandwiched between W metal layers and nanoporous anodic alumina membranes, by anodization of W/Al bilayers and substitution of WO3 nanopillars formed by the local anodization of W under the nanopores with Pt. By exploiting the Pourbaix corrosion diagram of W, we could find conditions that allow the selective dissolution of WO3 in pH = 7.4 buffer solution and formation of Pt nanopillars inside the nanoporous aluminum membrane via electroless deposition.

Original languageEnglish
Article numberSD1002
JournalJapanese journal of applied physics
Volume61
Issue numberSC
DOIs
Publication statusPublished - Jun 2022
Externally publishedYes

Keywords

  • electrochemical sensors
  • electroless deposition
  • nanofabrication
  • nanoporous anodic alumina

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy

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