Pretreatment Impact On The Morphology And The Catalytic Performance Of Hybrid Heterodimers Nanoparticles Applied To Co Oxidation

dc.creatorda Costa
dc.creatorLuelc Souza; Zanchet
dc.creatorDaniela
dc.date2017
dc.datemar
dc.date2017-11-13T13:58:09Z
dc.date2017-11-13T13:58:09Z
dc.date.accessioned2018-03-29T06:11:33Z
dc.date.available2018-03-29T06:11:33Z
dc.identifierCatalysis Today. Elsevier Science Bv, v. 282, p. 151 - 158, 2017.
dc.identifier0920-5861
dc.identifier1873-4308
dc.identifierWOS:000390723600008
dc.identifier10.1016/j.cattod.2016.06.056
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S092058611630462X
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/330206
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1367231
dc.descriptionIn this work, we applied seeded growth colloidal method to produce Au-FexOy dumbbells nanoparticles (DBNPs). The colloidal DBNPs were characterized and deposited on SiO2 to evaluate the effect of Au-FexOy interface on the catalytic activity in CO oxidation (CO+1/2O(2) -> CO2). In particular, we addressed the impact of redox pretreatments in the catalytic activity. Catalytic data showed that the catalyst was not very active after the first oxygen activation but after a reduction step there was a substantial increase in the catalyst activity. A detail characterization showed that DBNPs suffered great morphological and structural changes with the formation of core/shell Au-FexOy structures, in which the FexOy shells were irregular and presented lower crystallinity. The results suggest that the increase in catalytic activity was related to the formation of a more extended Au-FexOy interface after the pretreatments, thereby increasing the amount of active sites. (C) 2016 Elsevier B.V. All rights reserved.
dc.description282
dc.descriptionpart 2
dc.description151
dc.description158
dc.description8th International Symposium on Advanced Catalytic Materials
dc.descriptionAUG 17-20, 2015
dc.descriptionCancun, MEXICO
dc.languageEnglish
dc.publisherElsevier Science BV
dc.publisherAmsterdam
dc.relationCatalysis Today
dc.rightsfechado
dc.sourceWOS
dc.subjectAu-fexoy Heterostructures
dc.subjectDumbbell-like Nanoparticles
dc.subjectColloidal Synthesis
dc.subjectHeterogeneous Catalysis
dc.subjectCo Oxidation Reaction
dc.titlePretreatment Impact On The Morphology And The Catalytic Performance Of Hybrid Heterodimers Nanoparticles Applied To Co Oxidation
dc.typeActas de congresos


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