Photo-Fenton process is an advanced oxidation technology, which is used to eliminate organic pollutants in environmental pollution. In this paper, g-C₃N₄ quantum dots incorporated hierarchical macro-mesoporous CuO-SiO₂ (MM SC-QDs) composite was successfully fabricated by a dual-template method combined with polystyrene sphere (PS) crystal and copolymer F127. With the presence of H₂O₂, MM SC-QDs exhibited excellent degradation performance against the antibiotic pollutant norfloxacin (NOR) under visible-light assisted heterogeneous Fenton process at neutral condition, which was 27 times higher than that of the Bulk CuO-SiO₂. Interconnected macropores, together with abundant mesopores effectively expand specific surface area and improve mass transfer. In addition, the g-C₃N₄ QDs served as the separation center for photogenerated charges, promoting the separation and migration of the charge carriers. Wherein, the long-lived photogenerated electrons were effectively separated and transferred to the surface of CuO-SiO₂, which accelerated the reduction rate of Cu²⁺ to Cu⁺, enhancing the photo-Fenton-like catalytic activity. This stable, efficient, and environmentally friendly Cu-based heterogeneous photo-Fenton-like catalyst is expected to become an effective implementation in organic pollution removal. Meanwhile, this paper proves that Cu-based materials can activate H₂O₂ to generate singlet oxygen (¹O₂) for the degradation of organic pollutants. The transformation mechanism of ¹O₂ was clarified, which is helpful to better understand the Fenton-like reaction process of Cu-based materials.

Photo-Fenton工艺是一种高级氧化技术，用于消除环境污染中的有机污染物。在本文中，通过双模板法结合聚苯乙烯球（PS）晶体和共聚物 F127，成功制备了gC ₃ N ₄量子点掺入分级大介孔 CuO-SiO ₂（MM SC-QDs）复合材料。在H ₂ O ₂的存在下，MM SC-QDs在可见光辅助的非均相芬顿过程中在中性条件下对抗生素污染物诺氟沙星（NOR）表现出优异的降解性能，比Bulk CuO-SiO高27倍₂. 相互连接的大孔与丰富的介孔有效地扩大了比表面积并改善了传质。此外，gC ₃ N ₄ QDs作为光生电荷的分离中心，促进了电荷载流子的分离和迁移。其中，长寿命的光生电子被有效地分离并转移到CuO-SiO ₂表面，加速了Cu ²⁺向Cu ⁺的还原速度，增强光芬顿样催化活性。这种稳定、高效、环保的铜基非均相光芬顿类催化剂有望成为去除有机污染的有效手段。同时，本文证明了Cu基材料可以活化H ₂ O ₂产生单线态氧（¹ O ₂）来降解有机污染物。阐明了¹ O ₂的转化机理，有助于更好地理解Cu基材料的类芬顿反应过程。