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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2824
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dc.contributor.authorGupta D.-
dc.contributor.authorChauhan R.-
dc.contributor.authorKumar N.-
dc.contributor.authorSingh V.-
dc.contributor.authorSrivastava, Vimal Chandra-
dc.contributor.authorMohanty, Paritosh-
dc.contributor.authorMandal, Tapas Kumar-
dc.date.accessioned2020-10-06T14:12:03Z-
dc.date.available2020-10-06T14:12:03Z-
dc.date.issued2020-
dc.identifier.citationJournal of Environmental Management (2020), 258(): --
dc.identifier.issn3014797-
dc.identifier.other31929067-
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2019.110032-
dc.identifier.urihttp://repository.iitr.ac.in/handle/123456789/2824-
dc.description.abstractThis study focuses on the photocatalytic degradation of quinoline, a recalcitrant heterocyclic nitrogenous aromatic organic compound, using the mixed oxide ZnO–TiO2 photo-catalyst. Photo-catalysts were synthesized by the solid-state reaction method at different calcination temperatures of 400 °C, 600 °C, and 800 °C. Different analytical methods, including Field emission scanning electron microscope, Brunauer-Emmett-Teller surface area, X-ray diffraction, UV–vis diffuse reflectance spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy analysis were used for the catalyst characterization. The highest pore surface area of 57.9 m2g?1 was obtained for the photo-catalyst calcined at 400 °C. The effects of calcination temperature, solution pH, initial concentration, catalyst dose as well as irradiation time were studied. At the optimum condition, i.e., calcination temperature of 400 °C, pH ?8 and catalyst dose of 2.5 gL?1, maximum quinoline degradation and total organic carbon (TOC) removal efficiency of ?92% and ?78% were obtained after 240 min for initial quinoline amount of 50 mgL?1. The 1st, 2nd , and nth-order kinetic models were applied to analyze the quinoline degradation rate. The photocatalytic mechanism was studied by drawing energy level diagram with the help of the band-gap structures of the ZnO and TiO2, potential of the free radicals like [rad]OH and [rad]O2 and HOMO-LUMO energy gap of the quinoline molecule. The proposed pathways of quinoline mineralization were suggested on the basis of the identified intermediates by the gas chromatograph-mass spectrometer analysis and scavenger study. © 2019 Elsevier Ltd-
dc.language.isoen_US-
dc.publisherAcademic Press-
dc.relation.ispartofJournal of Environmental Management-
dc.subjectEnergy level-
dc.subjectMineralization pathway-
dc.subjectPhoto-catalysis-
dc.subjectQuinoline degradation-
dc.subjectZnO:TiO2 mixed oxide-
dc.titleEnhancing photocatalytic degradation of quinoline by ZnO:TiO2 mixed oxide: Optimization of operating parameters and mechanistic study-
dc.typeArticle-
dc.scopusid57212765054-
dc.scopusid57197047692-
dc.scopusid57203728717-
dc.scopusid57213256302-
dc.scopusid35565811700-
dc.scopusid55930648500-
dc.scopusid57200780613-
dc.affiliationGupta, D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationChauhan, R., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationKumar, N., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationSingh, V., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationSrivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationMohanty, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.affiliationMandal, T.K., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India-
dc.description.correspondingauthorSrivastava, V.C.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: vimalcsr@yahoo.co.in-
Appears in Collections:Journal Publications [CH]
Journal Publications [CY]

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