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Titolo:
Sum-frequency generation study of reacting species at surfaces
Autore:
Hirose, C; Bandara, A; Katano, S; Kubota, J; Wada, A; Domen, K;
Indirizzi:
Tokyowanst Technol, Resources Utilizat Res Lab, Midori Ku, Yokohama, Kanaga Tokyo Inst Technol Yokohama Kanagawa Japan 2268503 i Ku, Yokohama, Kanaga
Titolo Testata:
APPLIED PHYSICS B-LASERS AND OPTICS
fascicolo: 3, volume: 68, anno: 1999,
pagine: 559 - 565
SICI:
0946-2171(199903)68:3<559:SGSORS>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIBRATIONAL-ENERGY TRANSFER; ADSORBATE-SUBSTRATE VIBRATION; FORMIC-ACID; METHYL THIOLATE; METAL-SURFACE; ADSORPTION; DECOMPOSITION; DYNAMICS; SI(111); HYDROGENATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Hirose, C TokyoYokohama,hnol, Resources Utilizat Res Lab, Midori Ku, 4259 Nagatsuta, Tokyo Inst Technol 4259 Nagatsuta Yokohama Kanagawa Japan 2268503
Citazione:
C. Hirose et al., "Sum-frequency generation study of reacting species at surfaces", APP PHYS B, 68(3), 1999, pp. 559-565

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 similar to 300 K by the irradiation of 1064-nm picosecond pulses. The formates assuming bridged and bidentate configurations as stable species on metal and oxidesurfaces, respectively, were found to transform reversibly into a monodentate configuration. The transformation was ascribed to the shift of chemicalequilibrium caused by the laser-induced temperature jump at the surfaces. The decomposition started at similar to 25 K and similar to 100 K above thetemperatures at which significant transformation occurred on the metal andoxide surfaces, respectively. We postulate that the transformation to the monodentate configuration is a common occurrence in the thermal decomposition of formate on solid surfaces.

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Documento generato il 26/09/20 alle ore 13:31:22