XPS and UPS of Pt catalysts of different preparation

Z. Paál, R. Schlögl

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The techniques of XPS and UPS measurements with Pt black catalysts as well as reasonable data processing are discussed. The surface of Pt contains carbon and oxygen impurities in amounts of 15%–20% each. The use of various sensitivity factors does not influence the conclusions drawn on purity. Oxygen 1s and C 1s line fitting has been done on a self‐consistent basis. Of various chemical O and C species, three‐dimensional carbon islands and water and/or H2O attached to Pt sites predominate. These latter entities are well detected also by UPS. The usefulness of difference XP and UP spectra in distinguishing chemical entities is pointed out.

Original languageEnglish
Pages (from-to)524-528
Number of pages5
JournalSurface and Interface Analysis
Volume19
Issue number1-12
DOIs
Publication statusPublished - Jun 1992

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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