Magnetically separable rhodium nanoparticles as catalysts for releasing hydrogen from the hydrolysis of ammonia borane

Basit Öğe Kaydı
dc.contributor.authorTonbul, Yalcin
dc.contributor.authorAkbayrak, Serdar
dc.contributor.authorOzkar, Saim
dc.date.accessioned2024-04-24T16:15:01Z
dc.date.available2024-04-24T16:15:01Z
dc.date.issued2019
dc.departmentDicle Üniversitesien_US
dc.description.abstractMagnetically separable catalysts attract considerable attention in catalysis due to their facile separation from the reaction medium. This propensity is crucial for efficient multiple use of precious noble metal nanoparticles in catalysis. In fact, the isolation of catalysts from the reaction medium by filtration and washing results usually in the loss of huge amount of activity in the subsequent run of catalysis. Although many transition metal nanoparticle catalysts have been reported for the H-2 generation from the hydrolysis of ammonia borane, there is no study reporting the magnetically separable rhodium based catalysts for the hydrolytic dehydrogenation of ammonia borane. Here, we report the preparation of rhodium(0) nanoparticles supported on the surface of Fe3O4 and CoFe2O4 magnetic nanopowders as the first example of magnetically separable rhodium nanocatalysts. The resulting magnetically separable Rh-0/Fe3O4 and Rh-0/CoFe2O4 nanoparticles are highly active, long-lived and reusable catalysts in H-2 generation from the hydrolysis of ammonia borane providing a turnover frequency value of 273 and 720 min(-1), respectively, at 25.0 +/- 0.1 degrees C. These magnetically separable catalysts show high reusability and long-term stability in the hydrolysis reaction. They retain their complete initial activity even after the 5th use releasing exactly 3.0 equivalent H-2 gas per mole of ammonia borane. The long-term stability tests show that Rh-0/Fe3O4 and Rh-0/CoFe2O4 nanoparticles provide a total turnover number of 125,000 and 245,000, respectively, in releasing H-2 from the hydrolysis of ammonia borane at room temperature. The long term stability and reusability of magnetically separable Rh-0/Fe3O4 and Rh-0/CoFe2O4 nanopartides make them attractive catalysts for hydrogen generation in fuel cell applications. (C) 2019 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipDicle University [BAP: ZGEF.18.012]; Turkish Academy of Sciencesen_US
dc.description.sponsorshipPartial support by 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.doi10.1016/j.jcis.2019.06.038
dc.identifier.endpage587en_US
dc.identifier.issn0021-9797
dc.identifier.issn1095-7103
dc.identifier.pmid31238228en_US
dc.identifier.scopus2-s2.0-85067597003en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage581en_US
dc.identifier.urihttps://doi.org/10.1016/j.jcis.2019.06.038
dc.identifier.urihttps://hdl.handle.net/11468/15596
dc.identifier.volume553en_US
dc.identifier.wosWOS:000483454400059
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofJournal of Colloid and Interface Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectRhodium Nanoparticlesen_US
dc.subjectMagnetic Supporten_US
dc.subjectCobalt Ferriteen_US
dc.subjectMagnetiteen_US
dc.subjectHydrogenen_US
dc.subjectAmmonia Boraneen_US
dc.titleMagnetically separable rhodium nanoparticles as catalysts for releasing hydrogen from the hydrolysis of ammonia boraneen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
PubMed İndeksli Yayın Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu