Self-adaptive synchronous modulation of multi-junctions within immobilized CuOx Mesh for durable photocatalysis-coupled sulfite-based AOPs
文献类型： 外文期刊
作者： Wang Wenyu; Jiang Jiawei; Pang Han;;Guo Zhenbo;;Li Jinjun;;Wu Feng;; Zhang Changbo;; Gilles Mailhot
关键词： S(IV)-AOPs; Visible-light photocatalysis; Catalyst mesh; Hybrid CuOx composites; Multi-junction mechanism
期刊名称： Applied Catalysis B-Environment and Energy
ISSN： 0926-3373
年卷期： 2025 年
页码：
收录情况： SCIE（2025版） ; ; EI（2025版）
摘要： An immobilized copper composite oxide mesh catalyst (CuOx) featuring self-adaptive multi-junction interfaces was developed to address the inherent pH and oxygen sensitivities that typically restrict the efficiency of sulfitebased advanced oxidation processes (S(IV)-AOPs), thereby enabling visible light-assisted efficient degradation of sulfisoxazole under neutral S(IV)-containing conditions. Impressively, the CuOx-S(IV)/Vis system achieved 86.5 % removal within 90 min and exhibited remarkable long-term stability over consecutive reaction cycles, attributed to the synchronous modulation within its dual-mechanism framework. Integrated experimental characterizations and First-principles computations demonstrated that the mutual reinforcement between S(IV) autoxidation and Vis-driven photocatalysis originates from the dynamic evolution of the internal multi-junction architecture, comprising internal electric field (IEF) across p-p and p-n heterojunctions as well as Schottky junctions that facilitate internal electron extraction (IEE). This work offers fundamental insights into regulating Vis-induced oxy-sulfur radical pathways via complementary and synergistic mechanisms, providing a viable strategy toward sustainable and efficient catalytic water purification.
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