Formation of amorphous Pt oxides: Characterization and their catalysis

Satoshi Kameoka, Masahiko Shimoda, Yoshitaka Matsushita, Yoshiyuki Yamashita, Yoshio Katsuya, Masahiko Tanaka, An Pang Tsai

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Amorphous Pt oxides (am-PtOx) were formed by the leaching of copper from a Cu3Pt alloy in concentrated HNO3 at 323K for 12 h. The resulting am-PtOx was characterized using synchrotron X-ray powder diffraction, hard X-ray photoelectron spectroscopy, thermal analysis (TGDTA, TPD) and the BET method. This material had a high specific surface area with micropores (61.7m2/g) and decomposed to form Pt and O2 at approximately 720 K. The catalytic performance of the am-PtOx during CO oxidation was superior to that of a conventional Pt black catalyst. This study demonstrated a novel method of preparing am-PtOx with applications as a catalyst.

Original languageEnglish
Pages (from-to)490-494
Number of pages5
JournalMaterials Transactions
Volume56
Issue number4
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Amorphous platinum (Pt) oxides
  • Carbon monoxide (CO) oxidation
  • Catalytic material
  • Cu<inf>3</inf>Pt
  • Leaching
  • PtO<inf>x</inf>

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Kameoka, S., Shimoda, M., Matsushita, Y., Yamashita, Y., Katsuya, Y., Tanaka, M., & Tsai, A. P. (2015). Formation of amorphous Pt oxides: Characterization and their catalysis. Materials Transactions, 56(4), 490-494. https://doi.org/10.2320/matertrans.MF201410