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 journalArticlepeer-review

3 Citations (Scopus)


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
Issue number4
Publication statusPublished - 2015


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


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