A DFT study of H adsorption on Pt(111) and Pt-Ru(111) surfaces
In this work a comparative analysis between different Pt-Ru(111) surface models and pure Pt(111) surface is presented. Some aspects of the electronic structure of the surfaces and hydrogen adsorption are analysed based on density functional theory calculations. The hydrogen adsorption energy is sign...
| Autores: | , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/70969 |
| Acesso em linha: | http://hdl.handle.net/11336/70969 |
| Access Level: | acceso abierto |
| Palavra-chave: | Alloy Dft Hydrogen Pt-Ru https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Resumo: | In this work a comparative analysis between different Pt-Ru(111) surface models and pure Pt(111) surface is presented. Some aspects of the electronic structure of the surfaces and hydrogen adsorption are analysed based on density functional theory calculations. The hydrogen adsorption energy is significantly reduced when Ru is present on the surface. The substitution of Pt atoms by Ru atoms reinforce the Pt-H bond while the metal-metal bond is strongly modified, making the system less stable. © 2008 Elsevier B.V. All rights reserved. |
|---|