Highly Mesoporous g-C3N4 with Uniform Pore Size Distribution via the Template-Free Method to Enhanced Solar-Driven Tetracycline Degradation

A highly mesoporous graphitic carbon nitride g-C3N4 (GCN) has been produced by a template-free method and effectively photodegrade tetracycline (TC) antibiotic under solar light irradiation. The mesoporous GCN (GCN-500) greatly improves the photoactivity (0.0247 min−1) by 2.13 times, as compared to...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2021-08, Vol.11 (8), p.2041
Main Authors: Phoon, Bao Lee, Lai, Chin Wei, Pan, Guan-Ting, Yang, Thomas C.-K., Juan, Joon Ching
Format: Article
Language:English
Subjects:
Adsorption
Antibiotics
Carbon nitride
Charge efficiency
Current carriers
Electrodes
Environmental impact
Fourier transforms
g-C3N4
graphitic carbon nitride
Irradiation
Light
Light irradiation
mesoporous
Photocatalysis
photocatalyst
Photodegradation
Pollutants
Pore size
Pore size distribution
Porosity
Radiation
Recyclability
Size distribution
tetracycline
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Summary:A highly mesoporous graphitic carbon nitride g-C3N4 (GCN) has been produced by a template-free method and effectively photodegrade tetracycline (TC) antibiotic under solar light irradiation. The mesoporous GCN (GCN-500) greatly improves the photoactivity (0.0247 min−1) by 2.13 times, as compared to that of bulk GCN (0.0116 min−1). The efficiently strengthened photoactivity is ascribed to the high porosity (117.05 m2/g), and improves the optical absorption under visible light (Eg = 2.65 eV) and good charge carrier separation efficiency. The synthesized mesoporous GCN shows a uniform pore size (~3 nm) distribution. GCN-500 shows large pore volume (0.210 cm3/g) compared to GCN-B (0.083 cm3/g). Besides, the GCN-500 also exhibits good recyclability and photostability for TC photodegradation. In conclusion, GCN-500 is a recyclable photocatalyst for the removal of TC under visible light irradiation.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano11082041