Low-Crystallized Carbon as an Electron Mediator in g-C3N4/C/TiO2 for Enhancing Photocatalytic Degradation of Antibiotics
Low-Crystallized Carbon as an Electron Mediator in g-C3N4/C/TiO2 for Enhancing Photocatalytic Degradation of Antibiotics
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Photodegradation of antibiotics based on photocatalytic semiconductors is a promising option to alleviate water pollution.Despite its limitations, TiO2-based photocatalysts are still the most widely studied materials for pollutant quadruple topical ointment for dogs degradation.In this work, a pomegranate-like g-C3N4/C/TiO2 nano-heterojunction was constructed using the hydrothermal–calcination method, consisting of interconnected small crystals with a dense structure and closely contacted interface.
Low-crystallized carbon filled the gap between TiO2 and g-C3N4, forming a large interface.The local in-plane heterostructures generated by C/g-C3N4 are further improved for copyright transport.As expected, the optimal sample calcined at 300 °C (GTC-300) efficiently eliminated tetracycline hydrochloride (TC-HCl, 20 mg L−1), achieving a removal rate of up to 92.
9% within 40 min under full-spectrum irradiation and 87.8% within 60 min under the visible spectrum (λ > 400 nm).The electron mediator, low-crystallized carbon, successfully nightstick twm-850xl promoted the formation of new internal electric fields via the widespread heterojunction interface, which accelerated the separation and migration of photogenerated carriers between g-C3N4 and TiO2.
These results confirm that the g-C3N4/C/TiO2 nano-heterojunction exhibited outstanding photodegradation performance of TC-HCl.The electron mediator shows great potential in promoting copyright transfer and enhancing photocatalytic performance of heterogeneous photocatalysts in water treatment.