Experimental and theoretical study on hydrogen production by using Ag nanoparticle‐decorated graphite/Ni cathode

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dc.authorid0000-0002-5455-8179en_US
dc.authorwosidAGQ-1130-2022en_US
dc.contributor.authorYıldız, Reşit
dc.contributor.authorDoğru, Mert, Başak
dc.contributor.authorKARAZEHİR, TOLGA
dc.contributor.authorGÜRDAL DURĞUN, YELİZ
dc.contributor.authorToprak Döşlü, Serap
dc.date.accessioned2023-12-28T11:44:50Z
dc.date.available2023-12-28T11:44:50Z
dc.date.issued2021en_US
dc.departmentMAÜ, Fakülteler, Sağlık Bilimleri Fakültesi, Beslenme ve Diyetetik Bölümüen_US
dc.description.abstractIn this study, graphite (G) electrode was coated with nickel and decorated with silver nanoparticles (G/Ni/Ag) with the help of galvanostatic method, and electrodes were used as a cathode in alkaline water electrolysis system. The characterization was achieved using X-ray diffraction and field emission scanning electron microscopy. Hydrogen evolution performance of electrodes was investigated via cyclic voltammetry, chronoamperometry, cathodic polarization curves, and electrochemical impedance measurements. Electrochemical results showed that hydrogen production efficiency significantly increased and charge transfer resistance decreased via G/Ni/Ag. The electrochemical water splitting performance of G/Ni/Ag, was established in a joint experimental and computational effort. Water and proton adsorption on Ag-decorated Ni surface were investigated using density functional theory. Electronic structure calculations identified the role of Ag adatom and Ni surface on water and proton adsorptions. From the computational studies, O in water was more reliable to adsorb at the bridge position of the Ag and Ni atoms, leading improved orbital overlap between H and Ni atoms and maximized chemical and physical interactions between the H2O molecules. Therefore, the Ag-decorated Ni(111) surface provides preferable adsorption site for the O atom in water and direct interactions between water Hs and available surface Ni atoms promote water dissociation.en_US
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/10.1002/er.6068
dc.identifier.urihttps://hdl.handle.net/20.500.12514/5312
dc.identifier.wosqualityQ3en_US
dc.institutionauthorTOPRAK DÖŞLÜ, SERAP
dc.institutionauthorYıldız, Reşit
dc.language.isoenen_US
dc.relation.ispartofINTERNATIONAL JOURNAL OF ENERGY RESEARCHen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectalkaline electrolysis, G/Ni/Ag cathode, hydrogen productionen_US
dc.titleExperimental and theoretical study on hydrogen production by using Ag nanoparticle‐decorated graphite/Ni cathodeen_US
dc.typeConference Objecten_US

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