Long Mingyang, Li Di, Li Hongmiao, Wang Li, Zhao Qianqian, Wen Qi, Song Fang
School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China.
Phys Chem Chem Phys. 2022 Dec 14;24(48):29547-29556. doi: 10.1039/d2cp04434j.
In this paper, the ternary BiO/CQDs/rGO photocatalyst was synthesized by a solvothermal method. The as-fabricated BiO/CQDs/rGO composites showed stronger visible-light response and higher photocatalytic activity. In order to further enhance the degradation efficiency of tetracycline hydrochloride, BiO/CQDs/rGO was used to activate peroxymonosulfate under visible-light irradiation. The degradation efficiency increased sevenfold, indicating that the synergistic effect of photocatalysis and peroxymonosulfate activated by photogenerated electrons could clearly increase the degradation efficiency of tetracycline hydrochloride. In addition, the photocatalytic mechanism was further proposed and verified by radical quenching experiments and electron paramagnetic resonance analysis. Thus, this study provides a new idea for the photocatalytic application of BiO/CQDs/rGO and a contribution to the degradation of antibiotics to avoid polluting the water environment.
本文采用溶剂热法合成了三元BiO/CQDs/rGO光催化剂。所制备的BiO/CQDs/rGO复合材料表现出更强的可见光响应和更高的光催化活性。为了进一步提高盐酸四环素的降解效率，采用BiO/CQDs/rGO在可见光照射下活化过一硫酸盐。降解效率提高了7倍，表明光催化与光生电子活化过一硫酸盐的协同作用可显著提高盐酸四环素的降解效率。此外，通过自由基猝灭实验和电子顺磁共振分析进一步提出并验证了光催化机理。因此，本研究为BiO/CQDs/rGO的光催化应用提供了新思路，为避免抗生素污染水环境的降解做出了贡献。
