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Binary CoOx–SiO2 Porous Nanostructures for Catalytic CO Oxidation
| dc.rights.license | open | en_US |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | LY, Isabelle | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | VARDON, Antoine | |
| dc.contributor.author | CHANUT, Nicolas | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | NALLET, Frederic
IDREF: 068545487 | |
| dc.contributor.author | PELLENQ, Roland J.-M. | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | ROUZIÈRES, Mathieu | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | CLÉRAC, Rodolphe | |
| dc.contributor.author | AKIL, Joudia | |
| dc.contributor.author | EPRON, Florence | |
| dc.contributor.author | ESPECEL, Catherine | |
| hal.structure.identifier | Centre de Recherche Paul Pascal [CRPP] | |
| dc.contributor.author | BACKOV, Renal | |
| dc.date.accessioned | 2022-06-29T14:10:06Z | |
| dc.date.available | 2022-06-29T14:10:06Z | |
| dc.date.issued | 2022-05 | |
| dc.identifier.issn | 2574-0970 | en_US |
| dc.identifier.other | https://pubs.acs.org/doi/10.1021/acsanm.2c01258#notes1 | en_US |
| dc.identifier.uri | oai:crossref.org:10.1021/acsanm.2c01258 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/140330 | |
| dc.description.abstractEn | Through 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.iso | EN | en_US |
| dc.source | crossref | |
| dc.subject.en | heterogeneous catalysis | |
| dc.subject.en | sol-gel process | |
| dc.subject.en | hierarchical porous materials | |
| dc.subject.en | CO oxidation | |
| dc.subject.en | integrative chemistry | |
| dc.title.en | Binary CoOx–SiO2 Porous Nanostructures for Catalytic CO Oxidation | |
| dc.title.alternative | ACS Appl. Nano. Mater. | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1021/acsanm.2c01258 | en_US |
| dc.subject.hal | Chimie/Catalyse | en_US |
| bordeaux.journal | ACS Applied Nano Materials | en_US |
| bordeaux.page | 7331-7343 | en_US |
| bordeaux.volume | 5 | en_US |
| bordeaux.hal.laboratories | Centre de Recherche Paul Pascal (CRPP) - UMR 5031 | en_US |
| bordeaux.issue | 5 | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.institution | CNRS | en_US |
| bordeaux.team | Colloïdes, interfaces, assemblages (CIA) | |
| bordeaux.team | Matière molle : structure et dynamique (M2SD) | |
| bordeaux.team | Matériaux moléculaires et magnétisme (M3) | |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | dissemin | |
| hal.export | false | |
| workflow.import.source | dissemin | |
| dc.rights.cc | Pas de Licence CC | en_US |
| bordeaux.COinS | ctx_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 |
