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dc.contributor.authorBekmezci, Muhammed
dc.contributor.authorGüleş, Gamze Nur
dc.contributor.authorBayat, Ramazan
dc.contributor.authorŞen, Fatih
dc.date.accessioned2023-03-07T11:33:11Z
dc.date.available2023-03-07T11:33:11Z
dc.date.issued2023en_US
dc.identifier.citationBekmezci M, Gules GN, Bayat R, Sen F. Modification of multi-walled carbon nanotubes with platinum-osmium to develop stable catalysts for direct methanol fuel cells. Anal Methods. 2023 Mar 2;15(9):1223-1229. doi: 10.1039/d2ay02002e. PMID: 36804657.en_US
dc.identifier.isbn17599660
dc.identifier.urihttps://hdl.handle.net/20.500.12809/10574
dc.description.abstractIn the study, a new bimetallic catalyst was synthesized for methanol oxidation using multi-walled carbon nanotube (MWCNT)-supported platinum-osmium (PtOs) nanoparticles (PtOs@MWCNT NPs). The morphological structures of the prepared NPs were examined using different techniques, such as scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrochemical characterization of the synthesized PtOs@MWCNT catalysts, such as chronoamperometry (CA), cyclic voltammetry (CV), scan rate (SR) analysis, cyclic catalytic test, and electrochemical surface area (ECSA) evaluation, were performed in an alkaline medium. From the results obtained, the size of the NPs was found to be 3.12 nm according to the Debye-Schrrer equation, and the MWCNTs were clearly observed by SEM imaging. After the characterization of the prepared nanomaterials, the PtOs@MWCNT catalysts were employed in the methanol oxidation reaction, and a high oxidation current value of 220.86 mA cm−2 was observed. Besides, according to the CA results, the catalyst exhibited high stability for 4000 s, and it was seen that Os metal improved the catalytic activity of the main catalyst. These results show that the PtOs@MWCNT catalyst is highly stable and reusable, and provides high electrocatalytic activity in the methanol oxidation reaction. Moreover, the obtained catalyst gave ideal results in terms of CO tolerance and activity. These data show that the obtained catalyst will provide significant improvement and superior efficiency in fuel-cell applications.en_US
dc.item-language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isversionof10.1039/d2ay02002e.en_US
dc.item-rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBimetallic catalysten_US
dc.titleModification of multi-walled carbon nanotubes with platinum-osmium to develop stable catalysts for direct methanol fuel cellsen_US
dc.item-typearticleen_US
dc.contributor.departmentMÜ, Fen Fakültesi, Moleküler Biyoloji ve Genetik Bölümüen_US
dc.contributor.institutionauthorGüleş, Gamze Nur
dc.identifier.volume15en_US
dc.identifier.issue9en_US
dc.identifier.startpage1223en_US
dc.identifier.endpage1229en_US
dc.relation.journalAnalytical Methodsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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