Highly Mesoporous g-C<sub>3</sub>N<sub>4</sub> with Uniform Pore Size Distribution via the Template-Free Method to Enhanced Solar-Driven Tetracycline Degradation
oleh: Bao Lee Phoon, Chin Wei Lai, Guan-Ting Pan, Thomas C.-K. Yang, Joon Ching Juan
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2021-08-01 |
Deskripsi
A highly mesoporous graphitic carbon nitride g-C<sub>3</sub>N<sub>4</sub> (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<sup>−1</sup>) by 2.13 times, as compared to that of bulk GCN (0.0116 min<sup>−1</sup>). The efficiently strengthened photoactivity is ascribed to the high porosity (117.05 m<sup>2</sup>/g), and improves the optical absorption under visible light (E<sub>g</sub> = 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 cm<sup>3</sup>/g) compared to GCN-B (0.083 cm<sup>3</sup>/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.