Dynamics of a surface phase transition as monitored by in situ second harmonic generation

Boguslaw Pozniak, Daniel Alberto Scherson

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The dynamics of the (2 × 2)-3CO ↔ dilute phase transition involving CO adsorbed on Pt(111) microfacets has been monitored in situ in a CO-saturated acidic electrolyte using potential step-second harmonic generation techniques. Apparent time constants derived strictly from the optical data were found to be orders of magnitude slower for the forward process as compared to those of the reverse process. This behavior is consistent with the activated nature of CO electrooxidation, which requires the presence of a neighboring adsorbed oxygenated species, for example, hydroxyl, for the process to ensue.

本文言語English
ページ(範囲)7488-7489
ページ数2
ジャーナルJournal of the American Chemical Society
125
25
DOI
出版ステータスPublished - 2003 6 25
外部発表はい

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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