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Gold-TiO2-Nickel catalysts for low temperature-driven CO oxidation reaction

dc.contributor.authorHinojosa Reyes, Mariana
dc.contributor.authorZanella, Rodolfo
dc.contributor.authorMaturano Rojas. Viridiana
dc.contributor.authorRodríguez González, Vicente
dc.contributor.editorElsevier
dc.date.accessioned2018-11-15T18:58:34Z
dc.date.available2018-11-15T18:58:34Z
dc.date.issued2016
dc.identifier.citationMariana Hinojosa-Reyes, Rodolfo Zanella, Viridiana Maturano-Rojas, Vicente Rodríguez-González, Gold-TiO2-Nickel catalysts for low temperature-driven CO oxidation reaction, Applied Surface Science, Volume 368, 2016, Pages 224-232,
dc.identifier.urihttp://hdl.handle.net/11627/4733
dc.description.abstract"Nickel-doped-TiO2 catalysts were prepared by the sol–gel method and surface modified with gold nanoparticles (AuNPs) by the urea-deposition-precipitation technique. The as-synthesized catalysts were characterized by X-ray diffraction, Raman and XPS spectroscopies, N2 physisorption, STEM-HAADF microscopy and TPR hydrogen consumption. The Au/TiO2-Ni catalysts were evaluated catalytically performing CO oxidation reactions. The catalyst with nickel content of 1 wt. % (Au/TiO2-Ni 1) showed the highest CO conversion with respect to the high-nickel-content or bare/commercial TiO2 at 0 °C. In situ DRIFTS showed a strong participation of both nickel due to the presence of surface-nickel-metallic nanoparticles formed during the CO adsorption process at reaction temperatures above 200 °C, and surface-bridged-nickel-CO species. A minor deactivation rate was observed for the Au/TiO2-Ni 1 catalyst in comparison with the Au/TiO2 one. The oxygen vacancies that were created on the sol–gel-doped TiO2 improved the catalytic behavior during the performance of CO oxidation reactions, and inhibited the AuNP sintering."
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCO oxidation
dc.subjectGold nanoparticles
dc.subjectNickel-doped TiO2
dc.subjectDRIFTS
dc.subjectLow temperature oxidation
dc.subject.classificationQUÍMICA
dc.titleGold-TiO2-Nickel catalysts for low temperature-driven CO oxidation reaction
dc.typearticle
dc.identifier.doihttps://doi.org/10.1016/j.apsusc.2016.01.285
dc.rights.accessAcceso Abierto


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional