Magnetically separable ZnO/ZnFe204 and ZnO/CoFe204 photocatalysis supported onto nitrogen doped graphene for photocatalytic degradation of toxic dyes

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dc.contributor.authorChandel, Naresh
dc.contributor.authorSharma, Kirti
dc.contributor.authorSudhaik, Anita
dc.contributor.authorRaizada, Pankaj
dc.contributor.authorHosseini-Bandegharaei, Ahmad
dc.contributor.authorThakur, Vijay Kumar
dc.contributor.authorSingh, Pardeep
dc.date.accessioned2019-09-09T10:52:39Z
dc.date.available2019-09-09T10:52:39Z
dc.date.issued2019-08-23
dc.description.abstractAdvanced oxidation processes (AOPs) counting heterogeneous photocatalysis has confirmed as one of the preeminent method for waste water remediation. In the present work, we have successfully fabricated novel visible-light-driven nitrogen-doped graphene (NG) supported magnetic ZnO/ZnFe2O4 (ZnO/ZF/NG) and ZnO/CoFe2O4 (ZnO/CF/NG) nanocomposites. ZnO synthesized via direct precipitation method. Hydrothermal method was used for the preparation of nitrogen-doped graphene supported magnetic ZnO/ZF (ZnO/ZnFe2O4) and ZnO/CF (ZnO/CoFe2O4) nanocomposites. The procured materials were scrutinized by assorted characterizations to acquire information on their chemical composition, crystalline structure and photosensitive properties. The absorption and photocatalytic performance of photocatalysts were studied via UV–Visible spectra. Photodegradation performance of the synthesized nanocomposites was estimated toward mineralization of methyl orange (MO) and malachite green (MG) dyes in aqueous solution. The high surface area of ZnO/ZF/NG and ZnO/CF/NG was suitable for adsorptive removal of MO and MG dyes. The photodegradation performance of heterojunction photocatalysts was superior to bare photocatalyst in 140 min under visible-light irradiation. Spectrophotometer, GC–MS (Gas chromatography–mass spectrometry) elucidation was carried out to expose the possible intermediates formed. Both ZnO/ZF/NG and ZnO/CF/NG were rapidly isolated from the aqueous phase by applying an external magnetic field in 20 sec and 2 min, respectively. The photocatalytic performance and stability of ZnO/ZF/NG and ZnO/CF/NG nanocomposites were confirmed by conducting 10 consecutive regeneration cycles. Owing to recyclability of ZnO/ZF/NG and ZnO/CF/NG, these heterogeneous nanocomposites might be used as cost-effective for treatment of discarded water. The observations endorse that the synthesized ternary heterogeneous nanocomposites facilitates wastewater decontamination using photocatalytic technology.en_UK
dc.identifier.citationChandel N, Sharma K, Sudahiak A, et al., (2019) Magnetically separable ZnO/ZnFe204 and ZnO/CoFe204 photocatalysis supported onto nitrogen doped graphene for photocatalytic degradation of toxic dyes. Arabian Journal of Chemistry, Volume 13, Issue 2, February 2020, pp. 4324-4340en_UK
dc.identifier.issn1878-5352
dc.identifier.urihttps://doi.org/10.1016/j.arabjc.2019.08.005
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14519
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectZnFe2O4CoFe2O4en_UK
dc.subjectNitrogen doped grapheneen_UK
dc.subjectSupported photocatalysis Magnetic separationen_UK
dc.subjectRecycle efficiencyen_UK
dc.subjectDye mineralizationen_UK
dc.titleMagnetically separable ZnO/ZnFe204 and ZnO/CoFe204 photocatalysis supported onto nitrogen doped graphene for photocatalytic degradation of toxic dyesen_UK
dc.typeArticleen_UK

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