Publication:
Ultrasonically-assisted synthesis of CeO(2) within WS(2) interlayers forming type II heterojunction for a VOC photocatalytic oxidation

dc.contributor.coauthorHassandoost, R.
dc.contributor.coauthorYousef Tizhoosh, N.
dc.contributor.coauthorEsmat, M.
dc.contributor.coauthorGuselnikova, O.
dc.contributor.coauthorHussein N Assadi, M.
dc.contributor.coauthorKhataee, A.
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentKUTEM (Koç University Tüpraş Energy Center)
dc.contributor.kuauthorDoustkhah, Esmail
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T12:33:08Z
dc.date.issued2023
dc.description.abstractHere, we investigate the band structure, density of states, photocatalytic activity, and heterojunction mechanism of WS2 with CeO2 (CeO2@WS2) as a photoactive heterostructure. In this heterostructure, CeO2's growth within WS2 layers is achieved through ultrasonicating WS2 and intercalating CeO2's precursor within the WS2 interlayers, followed by hydrothermal treatment. Through a set of density functional calculations, we demonstrate that CeO2 and WS2 form an interface through a covalent bonding that can be highly stable. The electrochemical impedance spectroscopy (EIS) found that the CeO2@WS2 heterostructure exhibits a remarkably higher conductivity (22.23 mS cm(-2)) compared to either WS2 and CeO2, assignable to the interface in CeO2@WS2. Furthermore, in a physically mixed CeO2-WS2 where the interaction between particles is noncovalent, the resistance was significantly higher (0.67 mS cm(-2)), confirming that the heterostructure in the interface is covalently bonded. In addition, Mott-Schottky and the bandgap measurements through Tauc plots demonstrate that the heterojunction in CeO2 and WS2 is type II. Eventually, the CeO2@WS2 heterostructure indicated 446.7 mu mol g(-1) CO2 generation from photocatalytic oxidation of a volatile organic compound (VOC), formic acid, compared to WS2 and CeO2 alone.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.indexedbyPubMed
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuEU - TÜBİTAK
dc.description.sponsorshipUniversity of Tabriz and the National Institute for Materials Science (NIMS)
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.sponsorshipEuropean Union (EU)
dc.description.sponsorshipHorizon 2020
dc.description.sponsorshipMarie Sklodowska-Curie Individual Fellowship
dc.description.sponsorshipCo-Funded Brain Circulation Program
dc.description.versionPublisher version
dc.description.volume92
dc.identifier.doi10.1016/j.ultsonch.2022.106245
dc.identifier.eissn1873-2828
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR04069
dc.identifier.issn1350-4177
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-85143533380
dc.identifier.urihttps://hdl.handle.net/20.500.14288/1999
dc.identifier.wos928279600004
dc.keywordsCeO2
dc.keywordsFormic acid oxidation
dc.keywordsHeterostructure
dc.keywordsLayered WS2
dc.keywordsPhotocatalytic oxidation
dc.keywordsUltrasonically intercalated CeO2
dc.language.isoeng
dc.publisherElsevier
dc.relation.grantno120C057
dc.relation.ispartofUltrasonics Sonochemistry
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/10954
dc.subjectAcoustics
dc.subjectChemistry
dc.titleUltrasonically-assisted synthesis of CeO(2) within WS(2) interlayers forming type II heterojunction for a VOC photocatalytic oxidation
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorDoustkhah, Esmail
local.publication.orgunit1College of Sciences
local.publication.orgunit1Research Center
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
local.publication.orgunit2Department of Chemistry
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relation.isOrgUnitOfPublication6ce65247-25c7-415b-a771-a9f0249b3a40
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb
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