Evolution of the PVP–Pd Surface Interaction in Nanoparticles through the Case Study of Formic Acid Decomposition
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http://hdl.handle.net/10045/62492
Títol: | Evolution of the PVP–Pd Surface Interaction in Nanoparticles through the Case Study of Formic Acid Decomposition |
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Autors: | García Aguilar, Jaime | Navlani-García, Miriam | Berenguer-Murcia, Ángel | Mori, Kohsuke | Kuwahara, Yasutaka | Yamashita, Hiromi | Cazorla-Amorós, Diego |
Grups d'investigació o GITE: | Materiales Carbonosos y Medio Ambiente |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Paraules clau: | PVP–Pd surface interaction | Nanoparticles | Formic acid decomposition |
Àrees de coneixement: | Química Inorgánica |
Data de publicació: | 27-d’octubre-2016 |
Editor: | American Chemical Society |
Citació bibliogràfica: | Langmuir. 2016, 32(46): 12110-12118. doi:10.1021/acs.langmuir.6b03149 |
Resum: | Palladium nanoparticles (Pd NPs) were synthesized by the reduction-by-solvent method using polyvinylpirrolidone (PVP) as capping agent. The nonstatic interaction between PVP and the metallic surface may change the properties of the NPs due to the different possible interactions, through either the O or N atoms of the PVP. In order to analyze these effects and their repercussions in their catalytic performance, Pd NPs with various PVP/Pd molar ratios (1, 10, and 20) were prepared, deposited on silica, and tested in the formic acid decomposition reaction. The catalytic tests were conducted using catalysts prepared by loading NPs with three different time lapses between their purification and their deposition on the silica support (1 day, 1 month, and 6 months). CO adsorption, FTIR spectroscopy, XPS, and TEM characterization were used to determine the accessibility of the Pd NPs surface sites, the electronic state of Pd, and the average NPs size, respectively. The H2 production from the formic acid decomposition reaction has a strong dependence on the Pd surface features, which in turn are related to the NPs aging time due to the progressive removal of the PVP. |
Patrocinadors: | We thank the Spanish Ministry of Economy and Competitiveness (MINECO), Generalitat Valenciana, and FEDER (Projects CTQ2015-66080-R MINECO/FEDER and PROMETEOII/2014/010) for financial support. J.G.A. thanks the MINECO for his fellowship (BES-2013-063678) and especially acknowledges the mobility grant of MINECO, EEBB-I-15-10219 at Osaka University. |
URI: | http://hdl.handle.net/10045/62492 |
ISSN: | 0743-7463 (Print) | 1520-5827 (Online) |
DOI: | 10.1021/acs.langmuir.6b03149 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2016 American Chemical Society |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1021/acs.langmuir.6b03149 |
Apareix a la col·lecció: | INV - MCMA - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2016_Garcia-Aguilar_etal_Langmuir_final.pdf | Versión final (acceso restringido) | 1,77 MB | Adobe PDF | Obrir Sol·licitar una còpia |
2016_Garcia-Aguilar_etal_Langmuir_revised.pdf | Versión revisada (acceso abierto) | 3,62 MB | Adobe PDF | Obrir Vista prèvia |
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