Preparation of La-Dy-CeO2 ternary compound: Examination of photocatalytic and photoluminescence properties

Basit Öğe Kaydı
dc.authorid0000-0002-4522-6500en_US
dc.contributor.authorÖzlü Torun, Handan
dc.contributor.authorKırkgeçit, Rabia
dc.contributor.authorKılıç Dokan, Fatma
dc.contributor.authorÖztürk, Esra Çırçır
dc.date.accessioned2021-06-14T08:47:28Z
dc.date.available2021-06-14T08:47:28Z
dc.date.issued2021en_US
dc.departmentKMÜ, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.descriptionWOS:000715859600005en_US
dc.description10.1016/j.jphotochem.2022.113824 Doi no ile düzeltme kaydı mevcuttur.
dc.description.abstractThis study investigated the photochemical changes of cerium oxide (CeO2) with the contribution of rare earth ions. Lanthanum (La) and Dysprosium (Dy) were added to the CeO2 crystal structure simultaneously via citric acid sol-gel synthesis. Following synthesis, the sintering temperatures were chosen as 800 and 1000 °C. Results of X-ray diffraction (XRD) analysis showed that the doped and undoped CeO2 compounds exhibited a cubic phase. The surface morphology of the samples was examined by scanning electron microscopy (SEM). The particle sizes varied in the range of 90−150 nm and the composite elements were observed to maintain the stoichiometric ratio. Compound impurity control was performed using energy dispersive X-ray (EDX). Lattice changes in the compounds were revealed via Raman spectroscopy, which indicated that the La and Dy had caused changes in the CeO2 symmetry. The photocatalytic behavior of the compounds was investigated using methylene blue degradation. Optical band gaps were calculated and the La and Dy were found to have narrow band spacing. The band gap of the Ce0.85La0.10Dy0.05O2 compound sintered at 1000 °C was 1.63 eV, the rate constant was 9.4 * 10−3 min−1, and the degradation efficiency at 100 min was calculated as 60 %. The photoluminescence spectra exhibited four bands centered at 435, 532, 565, and 610 nm. The emission band at 565 nm was attributed to the transition from the 4F9/2 to the 6H13/2state, whereas the emission bands peaking at 435 nm, 532 nm, and 610 nm can be explained by the intrinsic luminescence of the host lattice.en_US
dc.identifier.citationÖzlü Torun, H., Kırkgeçit, R., Kılıç Dokan, F., & Öztürk, E. (2021). Preparation of la-dy-CeO2 ternary compound: Examination of photocatalytic and photoluminescence properties. Journal of Photochemistry and Photobiology A: Chemistry, 418 doi:10.1016/j.jphotochem.2021.113338en_US
dc.identifier.doi10.1016/j.jphotochem.2021.113338
dc.identifier.issn1010-6030
dc.identifier.scopus2-s2.0-85106897041
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2021.113338
dc.identifier.urihttps://hdl.handle.net/11492/5054
dc.identifier.volume418en_US
dc.identifier.wosWOS:000715859600005
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Sceince
dc.indekslendigikaynakScopus
dc.institutionauthorÖztürk, Esra Çırçır
dc.language.isoen
dc.publisherElsevieren_US
dc.relation.journalJournal of Photochemistry and Photobiology A: Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCeO2en_US
dc.subjectCo-dopingen_US
dc.subjectPhotocatalyticen_US
dc.subjectPhotoluminescenceen_US
dc.subjectSynergistic Effecten_US
dc.titlePreparation of La-Dy-CeO2 ternary compound: Examination of photocatalytic and photoluminescence propertiesen_US
dc.typeArticle

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