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Ceria-zirconia particles wrapped in a 2D carbon envelope: improved low-temperature oxygen transfer and oxidation activity
dc.contributor.author | Aneggi, Eleonora |
dc.contributor.author | Rico Perez, Veronica |
dc.contributor.author | de Leitenburg, Carla |
dc.contributor.author | Maschio, Stefano |
dc.contributor.author | Soler Turu, Lluís |
dc.contributor.author | Llorca Piqué, Jordi |
dc.contributor.author | Trovarelli, Alessandro |
dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Tècniques Energètiques |
dc.date.accessioned | 2016-02-09T09:45:53Z |
dc.date.available | 2016-02-09T09:45:53Z |
dc.date.issued | 2015-10-08 |
dc.identifier.citation | Aneggi, E., Rico-Perez, V., de Leitenburg, C., Maschio, S., Soler, L., Llorca, J., Trovarelli, A. Ceria-zirconia particles wrapped in a 2D carbon envelope: improved low-temperature oxygen transfer and oxidation activity. "Angewandte chemie. International edition", 08 Octubre 2015, vol. 54, núm. 47, p. 14040-14043. |
dc.identifier.issn | 1433-7851 |
dc.identifier.uri | http://hdl.handle.net/2117/82699 |
dc.description.abstract | Engineering the interface between different compo-nents of heterogeneous catalysts at nanometer level canradically alter their performances.This is particularly true forceria-based catalysts where the interactions are critical forobtaining materials with enhanced properties.Here we showthat mechanical contact achieved by high-energy milling ofCeO2–ZrO2powders and carbon soot results in the formationof acore of oxide particles wrapped in athin carbon envelope.This 2D nanoscale carbon arrangement greatly increases thenumber and quality of contact points between the oxide andcarbon. Consequently,the temperatures of activation andtransfer of the oxygen in ceria are shifted to exceptionally lowtemperatures and the soot combustion rate is boosted. Thestudy confirms the importance of the redox behavior of ceria-zirconia particles in the mechanism of soot oxidation andshows that the organization of contact points at the nanoscalecan significantly modify the reactivity resulting in unexpectedproperties and functionalities. |
dc.format.extent | 4 p. |
dc.language.iso | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Energies |
dc.subject | Àrees temàtiques de la UPC::Física::Termodinàmica |
dc.subject.lcsh | Nanotechnology |
dc.subject.lcsh | Catalysis |
dc.subject.lcsh | Catalysts |
dc.subject.lcsh | Zirconium |
dc.subject.lcsh | Oxygen |
dc.subject.other | Ceria-zirconia particles |
dc.subject.other | Heterogeneous catalysis |
dc.subject.other | High-energy milling |
dc.subject.other | Oxygen storage |
dc.subject.other | Soot combustion |
dc.title | Ceria-zirconia particles wrapped in a 2D carbon envelope: improved low-temperature oxygen transfer and oxidation activity |
dc.type | Article |
dc.subject.lemac | Nanotecnologia |
dc.subject.lemac | Catàlisi |
dc.subject.lemac | Catalitzadors |
dc.subject.lemac | Zirconi |
dc.subject.lemac | Oxigen |
dc.contributor.group | Universitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia |
dc.identifier.doi | 10.1002/anie.201507839 |
dc.relation.publisherversion | http://onlinelibrary.wiley.com/doi/10.1002/anie.201507839/abstract |
dc.rights.access | Open Access |
local.identifier.drac | 17502747 |
dc.description.version | Postprint (published version) |
local.citation.author | Aneggi, E.; Rico-Perez, V.; de Leitenburg, C.; Maschio, S.; Soler, L.; Llorca, J.; Trovarelli, A. |
local.citation.publicationName | Angewandte chemie. International edition |
local.citation.volume | 54 |
local.citation.number | 47 |
local.citation.startingPage | 14040 |
local.citation.endingPage | 14043 |
dc.identifier.pmid | 26448053 |
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