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@article{1782277,
author = {Praus, Petr and Smýkalová, Aneta and Foniok, Kryštof and Novák, Vlastimil and Hrbáč, Jan},
article_location = {Oxford},
article_number = {4},
doi = {http://dx.doi.org/10.1016/j.jece.2021.105498},
keywords = {Graphitic carbon nitride; Melamine; Cyanuric acid; Oxygen doping; Photocatalysis; Ofloxacin},
language = {eng},
issn = {2213-2929},
journal = {Journal of Environmental Chemical Engineering},
title = {Doping of graphitic carbon nitride with oxygen by means of cyanuric acid: Properties and photocatalytic applications},
url = {https://www.sciencedirect.com/science/article/pii/S2213343721004759?via%3Dihub},
volume = {9},
year = {2021}
}
TY - JOUR
ID - 1782277
AU - Praus, Petr - Smýkalová, Aneta - Foniok, Kryštof - Novák, Vlastimil - Hrbáč, Jan
PY - 2021
TI - Doping of graphitic carbon nitride with oxygen by means of cyanuric acid: Properties and photocatalytic applications
JF - Journal of Environmental Chemical Engineering
VL - 9
IS - 4
SP - 1-12
EP - 1-12
PB - Elsevier
SN - 22132929
KW - Graphitic carbon nitride
KW - Melamine
KW - Cyanuric acid
KW - Oxygen doping
KW - Photocatalysis
KW - Ofloxacin
UR - https://www.sciencedirect.com/science/article/pii/S2213343721004759?via%3Dihub
N2 - Bare 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.
ER -
PRAUS, Petr, Aneta SMÝKALOVÁ, Kryštof FONIOK, Vlastimil NOVÁK a Jan HRBÁČ. Doping of graphitic carbon nitride with oxygen by means of cyanuric acid: Properties and photocatalytic applications. \textit{Journal of Environmental Chemical Engineering}. Oxford: Elsevier, roč.~9, č.~4, s.~1-12. ISSN~2213-2929. doi:10.1016/j.jece.2021.105498. 2021.
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