Deuterated methanol adsorption on Si(111)-(7 x 7) has been studied by C Is and O Is core-line synchrotron radiation photoemission and mass spectrometry of photodesorbed ions. Experiments were performed as a function of coverage and temperature. Two different C Is photoemission peaks hint at two different adsorbed species, the first one related to the methoxy fragment produced after dissociative adsorption, the second one is attributed to a CD, species. Both peaks disappear after heating at 350 degrees C, though the methoxy species is more reactive, and a third peak appears. The nature of the species producing the third peak was deduced by means of the mass spectra after heating the sample at 400 degrees C and attributed to C dispersed on the silicon surface.

Carbone, M., Piancastelli, M.n., Zanoni, R., Comtet, G., Dujardin, G., Hellner, L. (1997). Methanol adsorption on Si(111)-(7x7), investigated by core-line photoemission and mass spectrometry of photodesorbed ions. SURFACE SCIENCE, 370(1), L179-L184 [10.1016/S0039-6028(96)01175-2].

Methanol adsorption on Si(111)-(7x7), investigated by core-line photoemission and mass spectrometry of photodesorbed ions

CARBONE, MARILENA;PIANCASTELLI, MARIA NOVELLA;
1997-01-01

Abstract

Deuterated methanol adsorption on Si(111)-(7 x 7) has been studied by C Is and O Is core-line synchrotron radiation photoemission and mass spectrometry of photodesorbed ions. Experiments were performed as a function of coverage and temperature. Two different C Is photoemission peaks hint at two different adsorbed species, the first one related to the methoxy fragment produced after dissociative adsorption, the second one is attributed to a CD, species. Both peaks disappear after heating at 350 degrees C, though the methoxy species is more reactive, and a third peak appears. The nature of the species producing the third peak was deduced by means of the mass spectra after heating the sample at 400 degrees C and attributed to C dispersed on the silicon surface.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore CHIM/03 - Chimica Generale e Inorganica
Settore CHIM/02 - Chimica Fisica
English
Con Impact Factor ISI
Alcohols; Chemisorption; Photoelectron emission; Photon stimulated desorption (PSD); Silicon; Soft X-ray photoelectron spectroscopy; Surface chemical reaction
Carbone, M., Piancastelli, M.n., Zanoni, R., Comtet, G., Dujardin, G., Hellner, L. (1997). Methanol adsorption on Si(111)-(7x7), investigated by core-line photoemission and mass spectrometry of photodesorbed ions. SURFACE SCIENCE, 370(1), L179-L184 [10.1016/S0039-6028(96)01175-2].
Carbone, M; Piancastelli, Mn; Zanoni, R; Comtet, G; Dujardin, G; Hellner, L
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/42970
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