Afficher la notice abrégée

dc.rights.licenseopenen_US
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorLY, Isabelle
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorVARDON, Antoine
dc.contributor.authorCHANUT, Nicolas
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorNALLET, Frederic
IDREF: 068545487
dc.contributor.authorPELLENQ, Roland J.-M.
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorROUZIÈRES, Mathieu
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorCLÉRAC, Rodolphe
dc.contributor.authorAKIL, Joudia
dc.contributor.authorEPRON, Florence
dc.contributor.authorESPECEL, Catherine
hal.structure.identifierCentre de Recherche Paul Pascal [CRPP]
dc.contributor.authorBACKOV, Renal
dc.date.accessioned2022-06-29T14:10:06Z
dc.date.available2022-06-29T14:10:06Z
dc.date.issued2022-05
dc.identifier.issn2574-0970en_US
dc.identifier.otherhttps://pubs.acs.org/doi/10.1021/acsanm.2c01258#notes1en_US
dc.identifier.urioai:crossref.org:10.1021/acsanm.2c01258
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/140330
dc.description.abstractEnThrough the integration of sol-gel chemistry, lyotrope mesophases and emulsions, the first CoOx-SiO2(HIPE) series of cobalt nano-oxides were embedded within silica macromesocellular self-standing hosts. These binary CoOx-SiO2 porous nanostructures (MUB-100(x)) series present an average of 95% porosity. We found out that high cobalt concentration maintains the hexagonal-2D organization of the mesoscopic voids when applying the thermal treatment at 700°C. Their specific surface areas fall between 400-500 m 2 g-1 when assessed from Ar physi-sorption measurements. At the microscopic length scale, as revealed through magnetic investigations, the low cobalt content foams MUB-100(1) and MUB-100(2) are made of the amorphous -Co(OH)2 phase coexisting with the silica network, while increasing the cobalt concentration during the one pot syntheses (MUB-100(3) and MUB-(4) materials) favors the formation of the spinel Co3O4 and olivine Co2SiO4 crystalline nanoparticles embedded within silica. When it turns towards the CO oxidation catalytic performance, the MUB-100(4) is able to totally convert the CO flow before 200°C (starting at 125°C) while achieving 50% of conversion for a light-off temperature T50 of 145°C, revealing the good efficiency of the MUB-100(4) in CO oxidation with which up to 4 catalytic cycles have been performed without disrupting drastically the catalytic performances while reaching thermodynamic stability from the cycle 2 to the cycle 4.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enheterogeneous catalysis
dc.subject.ensol-gel process
dc.subject.enhierarchical porous materials
dc.subject.enCO oxidation
dc.subject.enintegrative chemistry
dc.title.enBinary CoOx–SiO2 Porous Nanostructures for Catalytic CO Oxidation
dc.title.alternativeACS Appl. Nano. Mater.
dc.typeArticle de revueen_US
dc.identifier.doi10.1021/acsanm.2c01258en_US
dc.subject.halChimie/Catalyseen_US
bordeaux.journalACS Applied Nano Materialsen_US
bordeaux.page7331-7343en_US
bordeaux.volume5en_US
bordeaux.hal.laboratoriesCentre de Recherche Paul Pascal (CRPP) - UMR 5031en_US
bordeaux.issue5en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamColloïdes, interfaces, assemblages (CIA)
bordeaux.teamMatière molle : structure et dynamique (M2SD)
bordeaux.teamMatériaux moléculaires et magnétisme (M3)
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.exportfalse
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ACS%20Applied%20Nano%20Materials&rft.date=2022-05&rft.volume=5&rft.issue=5&rft.spage=7331-7343&rft.epage=7331-7343&rft.eissn=2574-0970&rft.issn=2574-0970&rft.au=LY,%20Isabelle&VARDON,%20Antoine&CHANUT,%20Nicolas&NALLET,%20Frederic&PELLENQ,%20Roland%20J.-M.&rft.genre=article


Fichier(s) constituant ce document

Thumbnail

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée