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A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim

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dc.contributor.author Altynbaeva, Liliya Sh.
dc.contributor.author Barsbay, Murat
dc.contributor.author Aimanova, Nurgulim A.
dc.contributor.author Jakupova, Zhanar Ye.
dc.contributor.author Nurpeisova, Dinara T.
dc.contributor.author Zdorovets, Maxim V.
dc.contributor.author Mashentseva, Anastassiya A.
dc.date.accessioned 2024-09-12T11:38:35Z
dc.date.available 2024-09-12T11:38:35Z
dc.date.issued 2022
dc.identifier.citation Altynbaeva, L.S.; Barsbay, M.; Aimanova, N.A.; Jakupova, Z.Y.; Nurpeisova, D.T.; Zdorovets, M.V.; Mashentseva, A.A. A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim. Nanomaterials 2022, 12, 1724. https:// doi.org/10.3390/nano12101724 ru
dc.identifier.issn 2079-4991
dc.identifier.other doi.org/10.3390/nano12101724
dc.identifier.uri http://rep.enu.kz/handle/enu/16279
dc.description.abstract The extremely high levels of water pollution caused by various industrial activities represent one of the most important environmental problems. Efficient techniques and advanced materials have been extensively developed for the removal of highly toxic organic pollutants, including pesticides. This study investigated the photocatalytic degradation of the fungicide carbendazim (Czm) using composite track-etched membranes (TeMs) in an aqueous solution. Copper(I) oxide (Cu2O) and zinc oxide (ZnO) microtubes (MTs) were prepared using an electroless template deposition technique in porous poly(ethylene terephthalate) (PET) TeMs with nanochannels with a density of 4 × 107 pores/cm−2 and diameter of 385 ± 9 nm to yield Cu2O@PET and ZnO@PET composite membranes, respectively. A mixed Cu2O/ZnO@PET composite was prepared via a two-step deposition process, containing ZnO (87%) and CuZ (13%) as crystalline phases. The structure and composition of all composite membranes were elucidated using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) techniques. Under UV–visible light irradiation, the Cu2O/ZnO@PET composite displayed enhanced photocatalytic activity, reaching 98% Czm degradation, higher than Cu2O@PET and ZnO@PET composites. The maximum Czm degradation efficiency from aqueous solution was obtained at an optimal pH of 6 and contact time of 140 min. The effects of various parameters such as temperature, catalyst dosage and sample exposure time on the photocatalytic degradation process were studied. The degradation reaction of Czm was found to follow the Langmuir–Hinshelwood mechanism and a pseudo-first order kinetic model. The degradation kinetics of Czm accelerated with increasing temperature, and the activation energy (Ea) levels were calculated as 11.9 kJ/mol, 14.22 kJ/mol and 15.82 kJ/mol for Cu2O/ZnO@PET, ZnO@PET and Cu2O@PET composite membranes, respectively. The reusability of the Cu2O/ZnO@PET catalyst was also investigated at different temperatures for 10 consecutive runs, without any activation or regeneration processes. The Cu2O/ZnO@PET composite exhibited degradation efficiency levels of over 50% at 14 ◦C and over 30% at 52 ◦C after 5 consecutive uses. ru
dc.language.iso en ru
dc.publisher Nanomaterials ru
dc.relation.ispartofseries Volume 12;Issue 10
dc.subject copper(I) oxide ru
dc.subject zinc oxide nanostructures ru
dc.subject composite track-etched membranes ru
dc.subject photocatalytic degradation of pesticide ru
dc.subject carbendazim removal ru
dc.subject wastewater pollutant ru
dc.subject electroless template deposition ru
dc.title A Novel Cu2O/ZnO@PET Composite Membrane for the Photocatalytic Degradation of Carbendazim ru
dc.type Article ru


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