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Benzimidazole Schiff base copper(II) complexes as catalysts for environmental and energy applications: VOC oxidation, oxygen reduction and water splitting reactions

2022-06-30Journal article Restricted access
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dc.contributor.authorPaul, Anup
dc.contributor.authorSilva, Tiago A. R.
dc.contributor.authorSoliman, Mohamed M. A.
dc.contributor.authorKaracic, Jozo
dc.contributor.authorSljukic, Biljana
dc.contributor.authorAlegria, Elisabete
dc.contributor.authorKhan, Rais Ahmad
dc.contributor.authorGuedes Da Silva, M. Fátima C.
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2023-05-04T07:56:18Z
dc.date.available2023-05-04T07:56:18Z
dc.date.issued2022-06-30
dc.description.abstractThe new copper(II) complexes [Cu(mu-1 kappa O:2 kappa ONN'-HL1)(mu-1 kappa O:2 kappa O'-NO3)](2)center dot[Cu(mu-1 kappa O:2 kappa ONN'-HL1)(CH3OH)](2)(NO3)(2) (1) and [Cu(kappa ONN'-HL2)(mu-1 kappa OO':2 kappa O'-NO3)](n) (2), derived from the new pro-ligands H(2)L1 = 2-(5,6-dihydroindolo[1,2-c]quinazolin-6-yl)-5-methylphenol and H(2)L2 = 2-(5,6-dihydroindolo[1,2-c]quinazolin-6-yl)-4-nitrophenol, were synthesized and characterized by elemental analysis, FT-IR, ESI-MS, and their structural features were unveiled by single-crystal X-ray diffraction analysis. This discloses a dimeric structure for 1 and a polymeric infinite 1D metal-organic chain for 2. The complexes were evaluated as catalysts for the oxidation of toluene, a volatile organic compound (VOC), and for oxygen reduction and water splitting reactions. 1 exhibits a higher activity for the peroxidative conversion of toluene to oxygenated products (total yields up to 38%), whereas 2 demonstrates a superior performance for electrochemical energy conversion applications, i.e., for oxygen reduction (ORR), oxygen evolution (OER) and hydrogen evolution (HER) reactions in an alkaline medium in terms of higher ORR current densities, lower Tafel slope (73 mV dec(-1)) and higher number of electrons exchanged (3.9), comparable to that of commercial Pt/C. Complex 2 also shows a better performance with lower onset potential and higher current densities for both OER and HER when studied as electrocatalyst for water splitting.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPAUL, Anup; [et al] – Benzimidazole Schiff base copper(II) complexes as catalysts for environmental and energy applications: VOC oxidation, oxygen reduction and water splitting reactions. International Journal of Hydrogen Energy. ISSN 0360-3199. Vol. 47, N.º 55 (2022), pp. 23175-23190.pt_PT
dc.identifier.doi10.1016/j.ijhydene.2022.04.271pt_PT
dc.identifier.eissn1879-3487
dc.identifier.issn0360-3199
dc.identifier.urihttp://hdl.handle.net/10400.21/15972
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPTDC/QUI-QIN/ 29778/2017 of ISEL- FCTpt_PT
dc.relationCentro de Química Estrutural
dc.relationCentro de Química Estrutural
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0360319922019164?via%3Dihubpt_PT
dc.subjectToluene oxidationpt_PT
dc.subjectOxygen reduction reactionpt_PT
dc.subjectOxygen evolution reactionpt_PT
dc.subjectHydrogen evolution reactionpt_PT
dc.titleBenzimidazole Schiff base copper(II) complexes as catalysts for environmental and energy applications: VOC oxidation, oxygen reduction and water splitting reactionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00100%2F2020/PT
oaire.citation.endPage23190pt_PT
oaire.citation.issue55pt_PT
oaire.citation.startPage23175pt_PT
oaire.citation.titleInternational Journal of Hydrogen Energypt_PT
oaire.citation.volume47pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNamePaul
person.familyNamekaracic
person.familyNameSljukic Paunkovic
person.familyNameAlegria
person.familyNameKhan
person.familyNameGuedes da Silva
person.familyNamePombeiro
person.givenNameAnup
person.givenNamejozo
person.givenNameBiljana
person.givenNameElisabete
person.givenNameRais Ahmad
person.givenNameM. Fátima C.
person.givenNameArmando
person.identifierH-6233-2013
person.identifierK-6083-2015
person.identifier863202
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person.identifier.ciencia-id7619-8E8E-979A
person.identifier.ciencia-id8311-38FA-CEFB
person.identifier.orcid0000-0002-1596-0675
person.identifier.orcid0000-0003-3317-6873
person.identifier.orcid0000-0003-0203-4012
person.identifier.orcid0000-0003-4060-1057
person.identifier.orcid0000-0002-7599-8464
person.identifier.orcid0000-0003-4836-2409
person.identifier.orcid0000-0001-8323-888X
person.identifier.ridE-9945-2012
person.identifier.ridH-8274-2012
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person.identifier.scopus-author-id8565553000
person.identifier.scopus-author-id8315848300
person.identifier.scopus-author-id24573845100
person.identifier.scopus-author-id6701761571
person.identifier.scopus-author-id7006067269
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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