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dc.contributor.authorAkika, F. Z.en_US
dc.contributor.authorBenamira, M.en_US
dc.contributor.authorLahmar, H.en_US
dc.contributor.authorTibera, A.en_US
dc.contributor.authorChabi, R.en_US
dc.contributor.authorAvramova, I.en_US
dc.contributor.authorSüzer, Şefiken_US
dc.contributor.authorTrari, M.en_US
dc.date.accessioned2019-02-21T16:01:46Zen_US
dc.date.available2019-02-21T16:01:46Zen_US
dc.date.issued2018en_US
dc.identifier.issn1010-6030en_US
dc.identifier.urihttp://hdl.handle.net/11693/49916en_US
dc.description.abstractThe present work focuses on the effect of Cu substitution on the crystal structure and photocatalytic activity of nano-spinel oxides Ni(1−x)CuxAl2O4 (x = 0.0-1.0). The synthesized compounds by co-precipitation route are characterized by X-ray diffraction, FT-IR, X-ray Photoelectron Spectroscopy, Scanning Electron Microscopy and UV-vis diffuse reflectance. The photocatalytic activity is followed by UV-vis spectroscopy and Electrochemical Impedance Spectroscopy in order to confirm the good performance of the catalyst and the charge separation of photogenerated (e−/h+) pairs. The photocatalytic efficiency of the synthesized catalysts is investigated through the decomposition of Congo Red dye under solar light irradiation. The efficient catalyst is Ni0.2Cu0.8Al2O4 with a removal conversion of 90.55% of the dye after 180 min. The parameters influencing the dye degradation like initial concentration are studied for the optimum degradation and the results have been discussed. This study shows that the adsorption kinetic of the Congo red has well followed the Langmuir isotherm model. The high photocatalytic activity of Ni0.2Cu0.8Al2O4 can be attributed to the valence band of the catalyst which enhances the mobility of the photoexcited charge carriers.en_US
dc.description.sponsorshipThe authors are grateful to Dr. Himrane Mohamed for English improvement of the manuscript and Agence thématique de recherche en sciences et technologie (ATRST) for financial support (Projet de mobilité, NM2PHTE).en_US
dc.language.isoEnglishen_US
dc.source.titleJournal of Photochemistry and Photobiology A: Chemistryen_US
dc.relation.isversionofhttps://doi.org/10.1016/j.jphotochem.2018.06.049en_US
dc.subjectCongo reden_US
dc.subjectLangmuir isothermen_US
dc.subjectNi1-xCuxAl2O4X-ray diffractionen_US
dc.subjectPhotocatalysisen_US
dc.titleStructural and optical properties of Cu-substitution of NiAl2O4 and their photocatalytic activity towards Congo red under solar light irradiationen_US
dc.typeArticleen_US
dc.departmentDepartment of Chemistryen_US
dc.citation.spage542en_US
dc.citation.epage550en_US
dc.citation.volumeNumber364en_US
dc.relation.projectAgence Thématique de Recherche en Sciences de la Santé, ATRSS - NM2PHTEen_US
dc.identifier.doi10.1016/j.jphotochem.2018.06.049en_US
dc.publisherElsevieren_US
dc.contributor.bilkentauthorSüzer, Şefiken_US
dc.embargo.release2020-09-01en_US
dc.identifier.eissn1873-2666en_US


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