Highly mesoporous g-C3N4 with uniform pore size distribution via the template-free method to enhanced solar-driven tetracycline degradation

Phoon, Bao Lee and Lai, Chin Wei and Pan, Guan-Ting and Yang, Thomas C. -K. and Juan, Joon Ching (2021) Highly mesoporous g-C3N4 with uniform pore size distribution via the template-free method to enhanced solar-driven tetracycline degradation. Nanomaterials, 11 (8). ISSN 2079-4991, DOI https://doi.org/10.3390/nano11082041.

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Abstract

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 m(2)/g), and improves the optical absorption under visible light (E-g = 2.65 eV) and good charge carrier separation efficiency. The synthesized mesoporous GCN shows a uniform pore size (similar to 3 nm) distribution. GCN-500 shows large pore volume (0.210 cm(3)/g) compared to GCN-B (0.083 cm(3)/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.

Item Type: Article
Funders: Universiti Malaya (PPSI-2020-CLUSTER-IDIG03)
Uncontrolled Keywords: Tetracycline; Mesoporous; Graphitic carbon nitride; Pore size; Photocatalyst; G-C3N4
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 15 Jun 2022 02:25
Last Modified: 15 Jun 2022 02:25
URI: http://eprints.um.edu.my/id/eprint/27926

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