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

被引：33

作者：

Carbone, M

Piancastelli, MN

Paggel, JJ

Weindel, C

Horn, K

机构：

[1] Univ Roma Tor Vergata, Dept Chem Sci & Technol, I-00133 Rome, Italy

[2] Univ Marburg, Wissensch Zentrum Mat Wissensch, D-3503L Marburg, Germany

[3] Univ Marburg, Fachbereich Phys, D-3503L Marburg, Germany

[4] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

SURFACE SCIENCE | 1998年 / 412-13卷

关键词：

alcohols; chemisorption; silicon; single crystal surfaces; synchrotron radiation photoelectron spectroscopy;

D O I：

10.1016/S0039-6028(98)00463-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：441 / 446

页数：6

共 10 条

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