To facilitate the activation of peroxymonosulfate, it is useful to simultaneously tune the coordination environment of the single-atom catalyst and develop a structure that effectively exposes the active site. In this study, we used a pre-assembly calcination method to prepare a structure composed of Cu single atoms on O-doped g-CN nanosheets (5Cu-OCN), and studied how this structure can effectively activate PMS under visible light catalysis. Compared to the g-CN, the 5Cu-OCN exhibits significantly improved PMS activation effect. Cu single atoms play an important role in catalyzing PMS activation and removing carbamazepine from solution, and explain the contribution of photo generated electrons and holes in enhancing the performance of catalysts in PMS activation. Furthermore, the constructive cooperation of 5Cu-OCN photocatalysts by PMS activation and photocatalysis has been shown to be useful in real aqueous systems. The results indicate that the main pathway for the generation of O is through the 5Cu-OCN photocatalytic process to promote PMS activation. In addition, the active reaction species involved in the degradation of carbamazepine were identified. This study provides an efficient copper monoatomic catalyst that can react to visible light for O based advanced oxidation processes.

中文翻译：

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Cu单原子/O掺杂g-C3N4介导的过一硫酸盐光催化活化通过高1O2产率实现超快卡马西平去除


为了促进过一硫酸盐的活化，同时调整单原子催化剂的配位环境并开发有效暴露活性位点的结构是有用的。在本研究中，我们采用预组装煅烧方法在O掺杂g-CN纳米片上制备了由Cu单原子组成的结构（5Cu-OCN），并研究了该结构如何在可见光催化下有效激活PMS。与g-CN相比，5Cu-OCN表现出显着改善的PMS激活效果。 Cu单原子在催化PMS活化和从溶液中去除卡马西平中发挥重要作用，并解释了光生电子和空穴在增强PMS活化催化剂性能方面的贡献。此外，5Cu-OCN 光催化剂通过 PMS 活化和光催化的建设性合作已被证明在实际水系统中是有用的。结果表明，产生O的主要途径是通过5Cu-OCN光催化过程促进PMS活化。此外，还鉴定了参与卡马西平降解的活性反应物质。这项研究提供了一种高效的铜单原子催化剂，可以在可见光下发生反应，用于基于 O 的高级氧化过程。