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dc.contributor.authorPraus, Petr
dc.contributor.authorSmýkalová, Aneta
dc.contributor.authorFoniok, Kryštof
dc.contributor.authorNovák, Vlastimil
dc.contributor.authorHrbáč, Jan
dc.identifier.citationJournal of Environmental Chemical Engineering. 2021, vol. 9, issue 4, art. no. 105498.cs
dc.description.abstractBare and oxygen doped graphitic carbon nitride were synthetized by the thermal polymerization of melamine (CN-M) and the mechanical mixtures of melamine and cyanuric acid, respectively, at 550 degrees C for 4 h. The ratios of melamine and cyanuric acid were 1:0.5, 1:1 and 1:2 (CN-MCA1, CN-MCA2 and CN-MCA3). The content of oxygen increased from 1.88 wt% (CN-M) to 3.93 wt% (CN-MCA3) and the specific surface area increased from 14 to 41 m(2) g(-1). The prepared CN materials were characterized by the elemental analysis, UV-Vis diffuse reflectance, X-ray diffraction, Fourier transform infrared spectrometry, the physisorption of nitrogen, scanning electron and high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, the determination of zeta potentials, and the Mott-Schottky method. The addition of cyanuric acid led to partial changes in the CN morphology, as documented by occurrence of CN tubes, increase in the specific surface area and was a source of additional -O- and -OH moieties which modified the CN surface in addition to the spontaneous oxygenation observed in CN-M. The above effects positively influenced photocatalytic activity of the CN materials as demonstrated using Rhodamine B (RhB) and the Ofloxacin antibiotics. The photocatalytic decomposition of Ofloxacin was more efficient than that of RhB and differed in kinetics (first-order vs. zero-order reaction). The reusability and stability of the CN materials was verified by repeating batch photocatalytic decompositions of Ofloxacin experiments for five times.cs
dc.relation.ispartofseriesJournal of Environmental Chemical Engineeringcs
dc.rights© 2021 Elsevier Ltd. All rights reserved.cs
dc.subjectgraphitic carbon nitridecs
dc.subjectcyanuric acidcs
dc.subjectoxygen dopingcs
dc.titleDoping of graphitic carbon nitride with oxygen by means of cyanuric acid: Properties and photocatalytic applicationscs
dc.description.sourceWeb of Sciencecs
dc.description.firstpageart. no. 105498cs

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