Oxygen-containing species on amorphous Fe80B20 and Fe40Ni40B20 alloys during chemisorption of CO and H2

Z. Zsoldos, Z. Schay, L. Guczi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A study was conducted to determine the forms of the oxygen chemisorbed during the interaction of CO and H2 with Fe/NiB and FeB alloys in both amorphous and crystallized states using photoelectron spectroscopy. Four different kinds of oxygen were observed to exist on the samples based upon O 1s binding energies. The first peak is probably related to bulk iron oxide while the last one correlates directly with the occurrence of boron oxide oxide species. The second peak is believed to be the signal of a weakly chemisorbed surface oxygen species in atomic state covering the surfaces after room temperature and low pressure (10-4 Pa) oxygen adsorption. It can be the possible precursor for deep oxidation of metal. The third peak may be assigned to the oxygen species stuck to the boron-metal interfaces having migrated from the metal surface to the surrounding boron atoms. Thereby small metal ensembles can be stabilized.

Original languageEnglish
Pages (from-to)257-261
Number of pages5
JournalSurface and Interface Analysis
Volume12
Issue number1-12
Publication statusPublished - Jul 1988

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Carbon Monoxide
Chemisorption
chemisorption
Oxygen
Metals
oxygen
Boron
boron
metals
boron oxides
Oxides
Photoelectron spectroscopy
Binding energy
Iron oxides
iron oxides
surface temperature
metal surfaces
coverings
low pressure
binding energy

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Oxygen-containing species on amorphous Fe80B20 and Fe40Ni40B20 alloys during chemisorption of CO and H2. / Zsoldos, Z.; Schay, Z.; Guczi, L.

In: Surface and Interface Analysis, Vol. 12, No. 1-12, 07.1988, p. 257-261.

Research output: Contribution to journalArticle

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