Autor según el artículo: Poblet, J. M: ; Lang, Z. ; Aparicio-Anglès, X.; Weinstock, I.; Clotet, A.
Departamento: Química Física i Inorgànica
Autor/es de la URV: POBLET RIUS, JOSEP MARIA; Lang, Z. ; Aparicio-Anglès, X.; Weinstock, I.; Clotet, A.
Palabras clave: polyoxometalates DFT
Resumen: Understanding the interaction between charged species and surfaces is one of the most challenging topics in chemistry, given its wide involvement in several fields such as electrocatalysis, stabilization of metal nanoparticles, preparation of devices, etc. In general, these systems are particularly complex to model because of the elevated number of factors that must be taken into account. Here, we report a robust strategy based on density functional theory for studying these interactions, which has been applied to the highly charged lacunary [PW11O39]7– (PW11) adsorbed on gold and silver surfaces. In this context, we find that, unlike the modeling of polyoxoanions in solution, the incorporation of counterions in the computational models is crucial for accurately reproducing the properties of the system, even if an implicit solvent is used. Most interestingly, we find that the PW11 cluster does not preferentially adsorb to the gold surface via its more nucleophilic monodefect face but, rather, through less negatively charged terminal oxygen ligands, with an orientation similar to that found for the nondefective Keggin anion [SiW12O40]4–, induced by the strong anion–cation interactions from the same and neighboring units. This counterintuitive result is important for ongoing efforts to understand and utilize the properties of polyoxometalate monolayers on gold and other reactive metal surfaces.
Grupo de investigación: Química Quàntica
Áreas temáticas: Química Química Chemistry
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0020-1669
Identificador del autor: 0000-0002-4533-0623; ; ; ;
Fecha de alta del registro: 2018-03-05
Página final: 3969
Volumen de revista: 56
Versión del articulo depositado: info:eu-repo/semantics/submittedVersion
Enlace a la fuente original: https://pubs.acs.org/doi/10.1021/acs.inorgchem.6b03035
Programa de financiación: plan; Excelencia; CTQ2014-52774-P altres; Grupos Consolidados; 2014SGR199 altres; ICREA Academia
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
DOI del artículo: 10.1021/acs.inorgchem.6b03035
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2017
Página inicial: 3961
Tipo de publicación: Article Artículo Article
Repositori URV