In this paper, the urchin-like CeO₂/ZnO@Au photocatalyst was rationally designed and prepared through hydrothermal method, chemical precipitation and photo reduction deposition. The optimal photocatalyst (CZA8) degraded Rhodamine B (RhB), 4-nitrophenol (4-NP) and Naproxen (NPX) about 100% within 20 min, 91.4% within 60 min and 88.9% within 30 min under Xe lamp illumination, respectively. Besides, the CZA8 possesses outstanding photo corrosion resistance capacity which has been verified with the cycle degradation experiments. The photocatalyst displays excellent light response and efficient separation of photo-induced carriers due to the fabrication of type-II heterojunction, the presence of surface plasmon resonance (SPR) effect and as well as the oxygen vacancy. The oxygen vacancy was systematically characterized by XPS, PL and Raman. Moreover, the photocatalytic degradation pathways are proposed based on the LC-MS results. Finally, a novel photocatalytic mechanism for photocatalytic oxidation of RhB, 4-NP and NPX is discussed and schematically illuminated.

在本文中，类似海胆的CeO ₂通过水热法，化学沉淀法和光还原沉积法对/ ZnO @ Au光催化剂进行了合理设计和制备。最佳光催化剂（CZA8）在氙气灯照射下20分钟内降解若丹明B（RhB），4-硝基苯酚（4-NP）和萘普生（NPX）分别约100％，60分钟内91.4％和30分钟内88.9％。 。此外，CZA8具有出色的抗光腐蚀性能，已通过循环降解实验证明。由于制造了II型异质结，存在表面等离子体激元共振（SPR）效应以及氧空位，该光催化剂显示出优异的光响应和光诱导载流子的有效分离。用XPS，PL和Raman系统地表征了氧空位。此外，根据LC-MS结果提出了光催化降解途径。最后，讨论并示意性阐明了用于RhB，4-NP和NPX光催化氧化的新型光催化机理。