Magnetically Separable Rh0/Co3O4 Nanocatalyst Provides over a Million Turnovers in Hydrogen Release from Ammonia Borane

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dc.contributor.authorAkbayrak, Serdar
dc.contributor.authorTonbul, Yalcin
dc.contributor.authorOzkar, Saim
dc.date.accessioned2024-04-24T16:19:05Z
dc.date.available2024-04-24T16:19:05Z
dc.date.issued2020
dc.departmentDicle Üniversitesien_US
dc.description.abstractCobalt(II,III) oxide nanopowders are used as supporting materials for rhodium(0) nanoparticles forming Rh-0/Co3O4 nanocatalysts, which can be prepared by impregnation and sodium borohydride reduction of Rh3+ ions on the surface of the oxide support. Magnetically separable Rh-0/Co3O4 nanoparticles are isolated from the reaction medium by an external magnet and characterized using various analytical techniques. Rh-0/Co3O4 nanoparticles are highly active and reusable catalysts with a long lifetime in hydrolytic dehydrogenation of ammonia borane (AB) at room temperature. Rh-0/Co3O4 nanoparticles with 0.5% wt Rh loading provide a turnover frequency of 1800 min(-1) and a total of 1.02 x 10(6) turnovers for H-2 evolution from the hydrolysis of AB at 25.0 +/- 0.1 degrees C. This turnover frequency is the second best value ever reported for the hydrolysis of AB, and the total turnover number of over a million is a record lifetime ever reported. Magnetically separable rhodium(0) nanoparticles are expectedly highly reusable catalysts and preserve their initial activity after the fifth run of hydrolysis. We also report the results of our study on the catalytic activity of Co3O4 nanopowders for the same dehydrogenation reaction.en_US
dc.description.sponsorshipTurkish Academy of Sciences; Dicle University [BAP: ZGEF.18.012]en_US
dc.description.sponsorshipPartial support by the Turkish Academy of Sciences and Dicle University (BAP: ZGEF.18.012) is gratefully acknowledged. We thank the METU Central Lab (Ankara/Turkey) for the TEM, XPS, ICP-OES, and BET analyses.en_US
dc.identifier.doi10.1021/acssuschemeng.9b07402
dc.identifier.endpage4224en_US
dc.identifier.issn2168-0485
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85082671021en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage4216en_US
dc.identifier.urihttps://doi.org/10.1021/acssuschemeng.9b07402
dc.identifier.urihttps://hdl.handle.net/11468/16395
dc.identifier.volume8en_US
dc.identifier.wosWOS:000526352300022
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherAmer Chemical Socen_US
dc.relation.ispartofAcs Sustainable Chemistry & Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectRhodium Nanoparticlesen_US
dc.subjectCobalt(Ii,Iii) Oxideen_US
dc.subjectHydrolysis Of Ammonia Boraneen_US
dc.subjectHydrogen Releaseen_US
dc.subjectCatalysisen_US
dc.titleMagnetically Separable Rh0/Co3O4 Nanocatalyst Provides over a Million Turnovers in Hydrogen Release from Ammonia Boraneen_US
dc.typeArticleen_US

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