Sum-frequency generation study of reacting species at surfaces

C. Hirose, A. Bandara, S. Katano, J. Kubota, A. Wada, K. Domen

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Time-resolved infrared-visible SFG spectroscopy has been used to detect the species produced in chemical reactions: the species produced in the thermal decomposition of fomates on the Ni(111) surface and NiO(111)/Ni(111) surface (details of the latter being described in a separate article in this issue) were detected by inducing a transient temperature jump of ∼ 300 K by the irradiation of 1064-nm picosecond pulses. The formates assuming bridged and bidentate configurations as stable species on metal and oxide surfaces, respectively, were found to transform reversibly into a monodentate configuration. The transformation was ascribed to the shift of chemical equilibrium caused by the laser-induced temperature jump at the surfaces. The decomposition started at ∼ 25 K and ∼ 100 K above the temperatures at which significant transformation occurred on the metal and oxide surfaces, respectively. We postulate that the transformation to the monodentate configuration is a common occurrence in the thermal decomposition of formate on solid surfaces.

Original languageEnglish
Pages (from-to)559-565
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume68
Issue number2-3
DOIs
Publication statusPublished - 1999 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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