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