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

Nanomaterials

Thomas C.-K. Yang¹  Guan-Ting Pan¹  Chin Wei Lai²  Joon Ching Juan²  Bao Lee Phoon² 

[1] Department of Chemical Engineering, National Taipei University of Technology, Taipei City 10608, Taiwan;Nanotechnology & Catalysis Research Centre (NANOCAT), Level 3 Block A, IPS Building, Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia;

关键词: tetracycline;    mesoporous;    graphitic carbon nitride;    pore size;    photocatalyst;    g-C₃N₄;   

DOI  :  10.3390/nano11082041

来源: DOAJ

【 摘 要 】

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 (E_g = 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.

【 授权许可】

Unknown