English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/50821
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Role of deprotonation and Cu adatom migration in determining the reaction pathways of oxalic acid adsorption on Cu(111)

AuthorsFaraggi, Marisa N.; Rogero, Celia ; Arnau, Andrés ; Trelka, Marta; Gallego, José M. ; Otero, Roberto; Miranda, Rodolfo
Issue Date2011
PublisherAmerican Chemical Society
CitationJournal of Physical Chemistry C 115: 21177-21182 (2011)
AbstractScanning 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. © 2011 American Chemical Society.
Identifiersdoi: 10.1021/jp205779g
issn: 1932-7447
Appears in Collections:(CFM) Artículos
(ICMM) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.