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Adsorption structure of acetic anhydride on a TiO2(110) surface observed by scanning tunneling microscopy

Authors :
Kinoshita, Kumiko
Suzuki, Shushi
Chun, Wang-Jae
Takakusagi, Satoru
Asakura, Kiyotaka
Source :
Surface Science. Feb2009, Vol. 603 Issue 3, p552-557. 6p.
Publication Year :
2009

Abstract

Abstract: The carboxylic acids are stably adsorbed on TiO2(110) surfaces at room temperature. To demonstrate the neutralization mechanism proposed by Ashima et al. [H. Ashima, W.-J. Chun, K. Asakura, Surf. Sci. 601 (2007) 1822.] that explains the stable adsorption of carboxylic acids, we studied the full-coverage adsorption structure of acetic anhydride on a TiO2(110) surface by STM (scanning tunneling microscopy). We directly observed three postulated species on the TiO2(110) surface; normal acetates (termed acetate A) forming a (2×1) ordered structure, a minor acetate species (termed acetate B) which was present between the bridging oxygen and the 5-fold Ti, and the oxygen vacancies. We determined the ratio of these three species. This ratio was in good agreement with the postulated conversion reaction of acetate B to A. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
00396028
Volume :
603
Issue :
3
Database :
Academic Search Index
Journal :
Surface Science
Publication Type :
Academic Journal
Accession number :
36337450
Full Text :
https://doi.org/10.1016/j.susc.2008.12.019