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RESEARCH PRODUCT

Photocatalytic degradation of 4-Nitrophenol by g-C3N4-MCy: Mechanism study and kinetic modeling

Elisa I. García-lópezZahra AbbasiAbdolhadi FarrokhniaMorteza Zargar ShoushtariGiuseppe Marcì

subject

ChemistryGeneral Chemical EngineeringGraphitic carbon nitrideAnalytical chemistryGeneral Physics and Astronomy02 engineering and technologyGeneral Chemistry010402 general chemistry021001 nanoscience & nanotechnology01 natural sciences0104 chemical sciencesCatalysischemistry.chemical_compoundReaction rate constantSpecific surface areaPhotocatalysisFourier transform infrared spectroscopy0210 nano-technologyCyanuric acidMelamine

description

Abstract A graphitic carbon nitride (g-C3N4-MCy) photocatalyst was prepared by thermal condensation of melamine and cyanuric acid with equal proportions. The photocatalyst was characterized by Fourier transform infrared spectroscopy (FTIR), Specific surface area (SSA), X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Transmission electron microscope (TEM), and DRS–UV–Vis spectroscopic methods. We studied the photo-degradation kinetics of 4-nitrophenol using a g-C3N4-MCy. Four parameters were applied including initial concentration of 4-nitrophenol, amount of catalyst, dissolved oxygen content, and photon flux. The reaction rate constant was shown to be correlated with the 4-nitrophenol concentration and also with a direct increase in photon flux, and dissolved oxygen concentration. The following rate of photo-degradation for 4-nitrophenol was achieved by kinetic modeling: r = k a p p ' I a ( 4.032 4 . n . p 1 + 4.032 4 . n . p 0 ) ( 0.570 O 2 1 + 0.570 O 2 )

yearjournalcountryeditionlanguage
2021-02-01Journal of Photochemistry and Photobiology A: Chemistry
https://doi.org/10.1016/j.jphotochem.2020.113004