Functionalization of electrochemically prepared titania nanotubes with Pt for application as catalyst for fuel cells

Fathy M.B. Hassan, Hiroshi Nanjo, Shanmugam Venkatachalam, Mitsuhiro Kanakubo, Takeo Ebina

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Titania nanotubes (TiNTs) were prepared by electrochemical anodization and were used as a support for depositing Pt. After annealing the TiNTs changed to crystalline anatase phase and were doped with carbon. The TiNTs/Pt/C was tested as electrode for electrochemical catalysis of methanol oxidation. The composite catalyst activities were measured by cyclic voltammetry in 1 M CH3OH + 1 M H2SO4. The results demonstrated that TiNTs/Pt/C can greatly enhance the catalytic activity of methanol oxidation. The CO stripping led to the increase in the current peak of methanol oxidation due to activating the catalyst surface by point defect formation. Moreover, the higher ratio of the forward anodic peak current to the reverse anodic peak current indicates more effective removal of the poisonous species.

Original languageEnglish
Pages (from-to)5889-5895
Number of pages7
JournalJournal of Power Sources
Volume195
Issue number18
DOIs
Publication statusPublished - Sep 15 2010
Externally publishedYes

Keywords

  • Anodization
  • Electrochemical catalyst
  • Fuel cells
  • Methanol oxidation
  • Titania nanotubes

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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