Ethanol adsorption on Si(111)-(7 x 7) has been investigated by high-resolution photoemission in the valence band and the Si 2p and C Is energy regions. The valence band spectra show that, similarly to methanol adsorption on Si(111)-(7 x 7), ethanol adsorption is dissociative and occurs through O-H bond breakage and Si-O bond formation. However, at variance with a previous study, we find that the adsorption does not proceed selectively on surface rest atoms. The lack of site selectivity is also confirmed by the photoemission spectra of the Si 2p core level line. The possibility of a further fragmentation of the ethoxy species into a methoxy plus a methyl group is discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

Carbone, M., Piancastelli, M., Paggel, J., Weindel, C., Horn, K. (1998). A high-resolution photoemission study of ethanol adsorption on Si(111)-(7x7). SURFACE SCIENCE, 412-413, 441-446.

A high-resolution photoemission study of ethanol adsorption on Si(111)-(7x7)

CARBONE, MARILENA;
1998-01-01

Abstract

Ethanol adsorption on Si(111)-(7 x 7) has been investigated by high-resolution photoemission in the valence band and the Si 2p and C Is energy regions. The valence band spectra show that, similarly to methanol adsorption on Si(111)-(7 x 7), ethanol adsorption is dissociative and occurs through O-H bond breakage and Si-O bond formation. However, at variance with a previous study, we find that the adsorption does not proceed selectively on surface rest atoms. The lack of site selectivity is also confirmed by the photoemission spectra of the Si 2p core level line. The possibility of a further fragmentation of the ethoxy species into a methoxy plus a methyl group is discussed. (C) 1998 Elsevier Science B.V. All rights reserved.
1998
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore CHIM/03 - CHIMICA GENERALE E INORGANICA
English
Con Impact Factor ISI
Alcohols; Chemisorption; Silicon; Single crystal surfaces; Synchrotron radiation photoelectron spectroscopy
Carbone, M., Piancastelli, M., Paggel, J., Weindel, C., Horn, K. (1998). A high-resolution photoemission study of ethanol adsorption on Si(111)-(7x7). SURFACE SCIENCE, 412-413, 441-446.
Carbone, M; Piancastelli, M; Paggel, J; Weindel, C; Horn, K
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/41256
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