Peripherally and non-peripherally carboxylic acid substituted Cu(ii) phthalocyanine/reduced graphene oxide nanohybrids for hydrogen evolution reaction catalysts

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dc.authoridKAPLAN, EKREM/0000-0002-2683-9539
dc.authoridGumrukcu, Selin/0000-0002-3135-6590
dc.authoridSarac, A.Sezai/0000-0001-7513-1740
dc.contributor.authorKaplan, Ekrem
dc.contributor.authorKarazehir, Tolga
dc.contributor.authorGumrukcu, Selin
dc.contributor.authorSarac, Baran
dc.contributor.authorSarac, A. Sezai
dc.contributor.authorHamuryudan, Esin
dc.date.accessioned2025-01-06T17:44:55Z
dc.date.available2025-01-06T17:44:55Z
dc.date.issued2023
dc.description.abstractDue to growing environmental concerns and increasing energy needs, hydrogen, one of the key options as a future energy carrier, has lately gained more interest. In this study, we have reported nanohybrid electrocatalyst materials based on peripherally and non-peripherally carboxylic acid substituted copper phthalocyanines (CuPcs) and reduced graphene oxide (rGO) constructed via pi-pi interactions between CuPcs and rGO. Prepared nanocomposites were coated onto the surface of a glassy carbon electrode and their electrocatalytic activity for the hydrogen evolution reaction (HER) was studied. Structural, electrochemical, and surface morphological properties of the produced electrodes were investigated using Fourier transform infrared (FT-IR) and Raman spectroscopy, X-ray diffraction (XRD), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) analyses. Electrochemical measurements indicated that the peripherally substituted rGO/CuPc electrodes have more efficiency and activity compared to the non-peripherally substituted ones. In addition, the EIS results show that peripherally carboxylic substituted rGO/CuPc electrodes become more conductive due to the position and content of the carboxyl groups. This increasing performance of the HER implied by a smaller impedance together with more facile electron transfer kinetics indicates a pronounced enhancement of the electrocatalytic hydrogen activity of peripherally carboxylic substituted rGO/CuPc electrodes.
dc.description.sponsorshipResearch Fund of the Istanbul Technical University [42019]
dc.description.sponsorshipThe authors thank Dr. M. Seref Sonmez and Samet Kaplan for their contribution about ICP-MS measurements. This work was supported by the Research Fund of the Istanbul Technical University (Project Number: 42019).
dc.identifier.doi10.1039/d2me00191h
dc.identifier.endpage821
dc.identifier.issn2058-9689
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85150436801
dc.identifier.scopusqualityQ1
dc.identifier.startpage810
dc.identifier.urihttps://doi.org/10.1039/d2me00191h
dc.identifier.urihttps://hdl.handle.net/20.500.14669/3241
dc.identifier.volume8
dc.identifier.wosWOS:000946410500001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofMolecular Systems Design & Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectCopper Phthalocyanıne
dc.subjectCobalt Phthalocyanıne
dc.subjectElectrocatalytıc Reductıon
dc.subjectPhotophysıcal Propertıes
dc.subjectElectrode Modıfıcatıon
dc.subjectIron Phthalocyanıne
dc.subjectOxygen Reductıon
dc.subjectEffıcıent
dc.subjectWater
dc.subjectHybrıd
dc.titlePeripherally and non-peripherally carboxylic acid substituted Cu(ii) phthalocyanine/reduced graphene oxide nanohybrids for hydrogen evolution reaction catalysts
dc.typeArticle

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