Formation and behavior of carbonates on Ag(110) in the presence of ethylene and oxygen

Kazuhisa Isegawa, Kohei Ueda, Kenta Amemiya, Kazuhiko Mase, Hiroshi Kondoh

Research output: Contribution to journalArticlepeer-review

Abstract

Intermediate species formed on Ag(110) surfaces under the presence of ethylene and oxygen in the sub-Torr pressure range were studied by near-ambient-pressure X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure (NEXAFS) measurements. Carbonates are clearly observed exclusively under an ethylene-rich condition (0.2 Torr ethylene and 0.04 Torr oxygen; ethylene/oxygen = 5) at a high temperature of 500 K or relatively low-temperature conditions (≤470 K) at an oxygen-rich gas ratio (ethylene/oxygen = 1/5). NEXAFS results support the formation of carbonates and indicate that the carbonates are adsorbed almost parallel to the Ag(110) surface. The carbonates coexist with surface oxides with different composition ratios depending on the ethylene/oxygen pressure ratio and surface temperature. From these results we propose that the carbonates are formed by reaction(s) between ethylene and oxygen on the Ag(110) surface.

Original languageEnglish
Pages (from-to)9032-9037
Number of pages6
JournalJournal of Physical Chemistry C
Volume125
Issue number17
DOIs
Publication statusPublished - 2021 May 6

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Fingerprint

Dive into the research topics of 'Formation and behavior of carbonates on Ag(110) in the presence of ethylene and oxygen'. Together they form a unique fingerprint.

Cite this