Abstract Inspired by plant photosynthesis, the construction of all-solid-state photocatalyst with Z-scheme structure has been proven to a promising approach for boosting the efficiency of charge transfer and electron-hole separation. Herein, novel ternary all-solid-state photocatalyst Ag3PO4/g-C3N4/MoSe2 composing of Ag3PO4 nanoparticles and MoSe2 nanosheets loaded with sheet-like g-C3N4 was first constructed by an in situ synthetic route. Furthermore, Ag3PO4/g-C3N4/MoSe2 photocatalyst showed greater visible-light-driven photodegradation activity toward CIP and TC than pristine Ag3PO4 and g-C3N4 due to the construction of Ag3PO4/g-C3N4/MoSe2 Z-scheme photocatalystic system. Furthermore, a probable visible-light-driven photodegradation mechanism of all-solid-state Z-scheme system was discussed clearly, which was ascribed to the major active species of photoinduced holes (h+) and superoxide radicals ( O2−) by free radical trapping and ESR experiments. Particularly, MoSe2 as a noble-metal free mediator not only can promote the separation efficiency of photoinduced pairs, but also accumulate more light energy in degradation process. Additionally, this solid-state photocatalysis can offer a new perception for the design and application of novel Z-scheme structure modified with MoSe2 as an electron-transfer mediator.

中文翻译：

---

高效全固态 Z 型 Ag3PO4/g-C3N4/MoSe2 光催化剂具有增强的可见光光催化性能以消除抗生素

摘要 受植物光合作用的启发，构建具有 Z 型结构的全固态光催化剂已被证明是一种提高电荷转移和电子空穴分离效率的有前途的方法。在此，首次通过原位合成路线构建了新型三元全固态光催化剂 Ag3PO4/g-C3N4/MoSe2，该催化剂由 Ag3PO4 纳米颗粒和负载有片状 g-C3N4 的 MoSe2 纳米片组成。此外，由于构建了 Ag3PO4/g-C3N4/MoSe2 Z 型光催化体系，Ag3PO4/g-C3N4/MoSe2 光催化剂对 CIP 和 TC 的可见光驱动光降解活性高于原始 Ag3PO4 和 g-C3N4。此外，清晰地讨论了全固态Z-scheme系统可能的可见光驱动光降解机制，通过自由基捕获和 ESR 实验将其归因于光致空穴 (h+) 和超氧自由基 (O2-) 的主要活性物质。特别是MoSe2作为一种不含贵金属的介体，不仅可以提高光致对的分离效率，而且在降解过程中积累更多的光能。此外，这种固态光催化可以为用 MoSe2 作为电子转移介质修饰的新型 Z 型结构的设计和应用提供新的认识。