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A new sulfur source for the preparation of efficient Cd(1-x)ZnxS photocatalyst for hydrogen evolution reaction

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dc.contributor.authorKOCA, ATIF
dc.contributor.authorsAgopcan, Burag; Akyuz, Duygu; Karaca, Fatma; Sarioglu, Cevat; Koca, Atif
dc.date.accessioned2022-03-12T22:24:24Z
dc.date.available2022-03-12T22:24:24Z
dc.date.issued2018
dc.description.abstractCd(1-x)ZnxS hexagonal crystals were for the first time synthesized via thermal sulfurization of Cd(1-x)ZnxO particles by using the elemental sulfur as the sulfur source. A temperature profile in the tube furnace was designed to obtain the proposed particle size, crystal structure, and morphology. Synthesized Cd(1-x)ZnxS particles were characterized with scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and diffuse reflectance UV Vis spectroscopy. It was seen that there was a polynomial relationship between the band gap and Cd: Zn ratio in the Cd(1-x)ZnxS. Cd0.58Zn023S has shapeless particles between 250 and 500 nm particle size. It was observed that particle size decreased as Zn ratio increased in the Cd(1-x),ZnxS. Cd(1-x),ZnxS hexagonal crystals had nano step surfaces which were one of the desired factors for achieving high photocatalytic efficiency. Finally, Synthesized Cd(1-x.)ZnxS particles were used as photocatalysts for the photocatalytic hydrogen evolution reaction (HER). Cd0.77Zn0.23S structure behaved the most active one among the different compositions of Cd(1-x)ZnxS nanoparticles. Cd0.77Zn0.23S showed almost high photocatalytic activity for HER with 1927 mu mol g(-1) h(-1) hydrogen evolution rate without using noble co-catalyst such as platinum. This good photocatalytic activity was believed to be due to the nanostep surface structure Cd0.77Zn0.23S which led the separation of the reduction and oxidation reaction sites and inhibited the recombination of the generated electrons and holes. Observation of considerably high photocurrent and open circuit potentials and changes in the electrochemical impedance spectroscopy responses supported the photocatalytic activity of the Cd0.77Zn0.23S particles. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.ijhydene.2018.03.104
dc.identifier.eissn1879-3487
dc.identifier.issn0360-3199
dc.identifier.urihttps://hdl.handle.net/11424/234753
dc.identifier.wosWOS:000431747600004
dc.language.isoeng
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectHydrogen evolution reaction
dc.subjectPhotocatalyst
dc.subjectCd(1-x)ZnxS
dc.subjectNanostep surface structure
dc.subjectSOLID-SOLUTION PHOTOCATALYSTS
dc.subjectVISIBLE-LIGHT
dc.subjectH-2 EVOLUTION
dc.subjectFORMED OXYGEN
dc.subjectENERGY SYSTEM
dc.subjectWATER
dc.subjectCDS
dc.subjectTIO2
dc.subjectPHOTOCORROSION
dc.subjectPERFORMANCE
dc.titleA new sulfur source for the preparation of efficient Cd(1-x)ZnxS photocatalyst for hydrogen evolution reaction
dc.typearticle
dspace.entity.typePublication
local.avesis.id7933d68e-09dc-48c0-85e8-4de7c8bda4d7
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages15
local.journal.quartileQ2
oaire.citation.endPage8220
oaire.citation.issue17
oaire.citation.startPage8206
oaire.citation.titleINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
oaire.citation.volume43
relation.isAuthorOfPublicationc2c7874b-59cc-4592-8dc8-885dff2628ea
relation.isAuthorOfPublication.latestForDiscoveryc2c7874b-59cc-4592-8dc8-885dff2628ea

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