Bioinspired copper coordination polymer catalysts for oxygen reduction reaction

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dc.citation.epage8300en_US
dc.citation.issueNumber27en_US
dc.citation.spage8296en_US
dc.citation.volumeNumber2en_US
dc.contributor.authorMishra, R.en_US
dc.contributor.authorPatil, B.en_US
dc.contributor.authorKaradaş, F.en_US
dc.contributor.authorYılmaz, E.en_US
dc.date.accessioned2018-04-12T10:38:27Z
dc.date.available2018-04-12T10:38:27Z
dc.date.issued2017en_US
dc.departmentDepartment of Chemistryen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractNon–noble metal catalysts have recently emerged as promising alternatives to the expensive platinum catalysts for the oxygen reduction reaction (ORR). In this study, a new domain of materials, copper based coordination polymers, has been investigated as promising catalysts for ORR. The study was inspired by copper incorporating biomolecules, which efficiently catalyse the oxygen reduction reaction in nature. Two coordination polymers, [Cu2(μ−AcO)4Po)]n (shortened as[Cu–A]) and [Cu2(μ−BzO)4Po)]n (shortened as[Cu–B]), incorporating one–dimensional chains of Cu(II) paddle wheel units bridged with phosphineoxide ligands were combined with multi−walled carbon nanotubes (MCNTs) to prepare hybrid electrocatalysts for ORR. The electrochemical analysis demonstrates that [Cu–A] catalyses ORR with 3.24 numbers of electrons with Tafel slopes of 122/83 mV dec−1 while it is 2.37 numbers of electrons with Tafel slopes of 131/84 mV dec−1 for [Cu–B]. Rotating disk electrode measurements and evaluation of Tafel slopes reveal that acetate moieties attached to Cu site shift the onset potential of ORR anodically (ca. 40 mV) compared to the one with benzoate bridging groups. The effect of bridging ligands to the stability and activity of catalysts in alkaline media was also evaluated. This study opens a new perspective for the development of non–platinum ORR catalysts.en_US
dc.embargo.release2018-09-21en_US
dc.identifier.doi10.1002/slct.201701303en_US
dc.identifier.issn2365-6549
dc.identifier.urihttp://hdl.handle.net/11693/36394
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1002/slct.201701303en_US
dc.source.titleChemistrySelecten_US
dc.subjectCopper coordination polymersen_US
dc.subjectLigand effecten_US
dc.subjectORR catalysten_US
dc.titleBioinspired copper coordination polymer catalysts for oxygen reduction reactionen_US
dc.typeArticleen_US
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Department of Chemistry
Institute of Materials Science and Nanotechnology (UNAM)