Ruthenium modified defatted spent coffee catalysts for supercapacitor and methanolysis application

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dc.authoridAvci Hansu, Tulin/0000-0001-5441-4696
dc.authoridKivrak, Hilal/0000-0001-8001-7854
dc.authoridakdemir, Murat/0000-0001-9235-1913
dc.authoridKAYA, MUSTAFA/0000-0002-0622-3163
dc.contributor.authorAkdemir, Murat
dc.contributor.authorHansu, Tulin Avci
dc.contributor.authorCaglar, Aykut
dc.contributor.authorKaya, Mustafa
dc.contributor.authorKivrak, Hilal Demir
dc.date.accessioned2024-12-24T19:24:09Z
dc.date.available2024-12-24T19:24:09Z
dc.date.issued2021
dc.departmentSiirt Üniversitesi
dc.description.abstractCurrently, a novel green material, defatted spent coffee ground (DSCG), is employed as a support to prepare DSCG supported Ru (DSCG-Ru) material. DSCG and DSCG-Ru materials are characterized by advanced surface analytical techniques such as N-2 adsorption-desorption, X-ray diffraction, X-ray photoelectron spectroscopy, and H-2-temperature-programmed reduction. Characterization results revealed that DSCG-Ru was prepared successfully. First, DSCG-Ru is prepared at varying Ru contents on deoiled coffee waste and hydrogen production experiments are performed by the methanolysis of sodium borohydride on the DSCG-Ru catalysts. It is observed that optimum conditions for the catalyst preparation are examined on the 10% Ru containing DSCG-Ru catalysts and found as 10% Ru, 300 degrees C, and 60 minutes. DSCG catalyst containing 10% Ru completed the methanolysis reaction in 1.5 minutes. Capacitive measurements to investigate the supercapacitor property of DSCG-Ru catalysts prepared at optimum conditions 10% Ru, 300 degrees C, and 60 minutes is investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and galvanostatic charge-discharge measurements. Results revealed that gravimetric capacitance of the electrode at a current density is found as of 0.5 A/g and 43 F/g, greater than the literature values. DSCG-Ru, green novel supported Ru catalyst, has a dual promising performance in hydrogen production and supercapacitor measurements.
dc.identifier.doi10.1002/est2.243
dc.identifier.issn2578-4862
dc.identifier.issue4
dc.identifier.urihttps://doi.org/10.1002/est2.243
dc.identifier.urihttps://hdl.handle.net/20.500.12604/5866
dc.identifier.volume3
dc.identifier.wosWOS:000647689100001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofEnergy Storage
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241222
dc.subjectgreen ground defatted spent coffee
dc.subjectmethanolysis
dc.subjectruthenium
dc.subjectsodium borohydride
dc.subjectsupercapacitor
dc.titleRuthenium modified defatted spent coffee catalysts for supercapacitor and methanolysis application
dc.typeArticle

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