Synthesis of a ternary Bi2O3/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride,Physical Chemistry Chemical Physics

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Synthesis of a ternary Bi2O3/CQDs/rGO photocatalyst to active peroxymonosulfate for the removal of tetracycline hydrochloride
Physical Chemistry Chemical Physics ( IF 2.9 ) Pub Date : 2022-11-16 , DOI: 10.1039/d2cp04434j
Mingyang Long ₁ , Di Li ₁ , Hongmiao Li ₁ , Li Wang ₂ , Qianqian Zhao ₁ , Qi Wen ₁ , Fang Song ₃

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In this paper, the ternary Bi₂O₃/CQDs/rGO photocatalyst was synthesized by a solvothermal method. The as-fabricated Bi₂O₃/CQDs/rGO composites showed stronger visible-light response and higher photocatalytic activity. In order to further enhance the degradation efficiency of tetracycline hydrochloride, Bi₂O₃/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 Bi₂O₃/CQDs/rGO and a contribution to the degradation of antibiotics to avoid polluting the water environment.

中文翻译：

合成三元 Bi2O3/CQDs/rGO 光催化剂以活性过氧单硫酸盐去除四环素盐酸盐

本文采用溶剂热法合成了三元Bi ₂ O _{3 /CQDs/rGO光催化剂。}所制备的 Bi ₂ O ₃ /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。为了进一步提高四环素盐酸盐的降解效率，Bi ₂ O ₃/CQDs/rGO 用于在可见光照射下激活过氧单硫酸盐。降解效率提高了七倍，表明光催化和光生电子激活的过氧单硫酸盐的协同作用可以明显提高四环素盐酸盐的降解效率。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Bi 2} O ₃ /CQDs/rGO的光催化应用提供了新的思路，为抗生素的降解避免污染水环境做出了贡献。

更新日期：2022-11-16

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