Synthesis of ultrathin porous g-C3N4 nanofilm via template-free method for photocatalytic degradation of tetracycline

Constructing high-performance visible-light responsive semiconductor photocatalysts for removing organic contamination from sewage has gained considerable attention recently. Herein, an ultrathin porous g-C3N4 nanofilm is fabricated via a facile template-free strategy and the large specific area, abundant nitrogen vacancies and ultrathin porous structure endow it with broad visible-light-responsive range, narrow bandgap as well as sufficient separation of photoinduced carriers. In consequence, the ultrathin porous g-C3N4 nanofilm exhibits prominent photocatalytic tetracycline (TC) degradation performance and high re-action rate constant under the visible light, which is upto 8.57 folds efficiency improvement over the bulk g-C3N4. Meanwhile, it also exhibits excellent performance with the irradiation of UV-vis light and actual sunlight. This work delivers a brand-new template-free approach to prepare ultrathin porous g-C3N4 na-nofilm, and provides a deeper understanding of photocatalytic TC degradation for practical applications.(c) 2023 Elsevier B.V. All rights reserved.

Automated summary

Constructing high-performance visible-light responsive semiconductor photocatalysts for removing organic contamination from sewage has gained considerable attention recently. An ultrathin porous g-C3N4 nanofilm with broad visible-light-responsive range, narrow bandgap, and sufficient separation of photoinduced carriers was fabricated. It exhibited prominent photocatalytic degradation performance for tetracycline (TC) under visible light, with an efficiency improvement of up to 8.57 times compared to bulk g-C3N4.