Analysis of Tetracycline Modification Based on g-C<sub>3</sub>N<sub>4</sub> Photocatalytic Degradation
To address challenges in antibiotic wastewater treatment, we synthesized a series of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>)-based photocatalysts (BCN, PCN, TCN, BTCN, and TCNE-modified PTCN) via defect engineering. TCNE modification disrupted the triazine rin...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
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| Series: | Inorganics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6740/13/3/77 |
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| Summary: | To address challenges in antibiotic wastewater treatment, we synthesized a series of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>)-based photocatalysts (BCN, PCN, TCN, BTCN, and TCNE-modified PTCN) via defect engineering. TCNE modification disrupted the triazine ring-bridging amino network in PTCN, forming a porous structure with enhanced specific surface area validated by SEM/TEM while retaining the graphene-like framework confirmed by XRD/FTIR. Photoluminescence (PL) analysis revealed prolonged photogenerated carrier lifetime and improved separation efficiency in PTCN, achieving 89.10% degradation of chlortetracycline hydrochloride under visible light—1.65-fold higher than pristine g-C<sub>3</sub>N<sub>4</sub>. Mechanistic studies identified superoxide radicals (•O<sub>2</sub><sup>−</sup>) as dominant active species, generated via O<sub>2</sub> activation at defect sites and efficient electron-hole utilization. Optimized conditions enabled PTCN to maintain high activity across a broad pH range and retain 82.59% efficiency after five cycles. This work advances defect-engineered photocatalyst design for adaptable, high-performance antibiotic degradation, offering practical insights for wastewater remediation. |
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| ISSN: | 2304-6740 |