Role of Deprotonation and Cu Adatom Migration in Determining the Reaction Pathways of Oxalic Acid Adsorption on Cu(111)
(2011) In Journal of Physical Chemistry C 115(43). p.21177-21182- Abstract
- Scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and first principles theoretical calculations have been used to gain insight into the fundamental processes involved in the adsorption and self-assembly of oxalic acid on Cu(111). The experimental data demonstrate that several reaction pathways are involved in the chemisorption of oxalic acid on Cu(111), one of which leads to deprotonation of the acid into oxalate molecules that form ordered structures on the surface. Theoretical calculations indicate that the adsorption of oxalate molecules is not stable on the surface unless copper adatoms are taken into consideration. Coordination with copper adatoms prevents oxalate molecules from getting closer to the... (More)
- Scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and first principles theoretical calculations have been used to gain insight into the fundamental processes involved in the adsorption and self-assembly of oxalic acid on Cu(111). The experimental data demonstrate that several reaction pathways are involved in the chemisorption of oxalic acid on Cu(111), one of which leads to deprotonation of the acid into oxalate molecules that form ordered structures on the surface. Theoretical calculations indicate that the adsorption of oxalate molecules is not stable on the surface unless copper adatoms are taken into consideration. Coordination with copper adatoms prevents oxalate molecules from getting closer to the substrate, precluding the expected decomposition of oxalate into carbon dioxide. Our results, thus, suggest that the 2D gas of diffusing copper adatoms might play a very important role in the self-assembly of the molecules not only by catalyzing the deprotonation of oxalic acid but also by decreasing the surface reactivity. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2208288
- author
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry C
- volume
- 115
- issue
- 43
- pages
- 21177 - 21182
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000296172800046
- scopus:80055059796
- ISSN
- 1932-7447
- DOI
- 10.1021/jp205779g
- language
- English
- LU publication?
- yes
- id
- be979d41-147c-49c5-a677-5de432550940 (old id 2208288)
- date added to LUP
- 2016-04-01 10:49:13
- date last changed
- 2022-02-23 02:17:17
@article{be979d41-147c-49c5-a677-5de432550940, abstract = {{Scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and first principles theoretical calculations have been used to gain insight into the fundamental processes involved in the adsorption and self-assembly of oxalic acid on Cu(111). The experimental data demonstrate that several reaction pathways are involved in the chemisorption of oxalic acid on Cu(111), one of which leads to deprotonation of the acid into oxalate molecules that form ordered structures on the surface. Theoretical calculations indicate that the adsorption of oxalate molecules is not stable on the surface unless copper adatoms are taken into consideration. Coordination with copper adatoms prevents oxalate molecules from getting closer to the substrate, precluding the expected decomposition of oxalate into carbon dioxide. Our results, thus, suggest that the 2D gas of diffusing copper adatoms might play a very important role in the self-assembly of the molecules not only by catalyzing the deprotonation of oxalic acid but also by decreasing the surface reactivity.}}, author = {{Faraggi, M. N. and Rogero, C. and Arnau, A. and Trelka, M. and Ecija, D. and Isvoranu, Cristina and Schnadt, Joachim and Marti-Gastaldo, C. and Coronado, E. and Gallego, J. M. and Otero, R. and Miranda, R.}}, issn = {{1932-7447}}, language = {{eng}}, number = {{43}}, pages = {{21177--21182}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of Physical Chemistry C}}, title = {{Role of Deprotonation and Cu Adatom Migration in Determining the Reaction Pathways of Oxalic Acid Adsorption on Cu(111)}}, url = {{http://dx.doi.org/10.1021/jp205779g}}, doi = {{10.1021/jp205779g}}, volume = {{115}}, year = {{2011}}, }