Self-Assembly of Nanosheet-Supported Fe-MOF Heterocrystals as a Reusable Catalyst for Boosting Advanced Oxidation Performance via Radical and Nonradical Pathways

Heterojunction catalysts have drawn increasing interest for the visible light-driven Fenton reaction and bring tremendous opportunities environmental remediation. Herein, a BiOI/MIL-53(Fe) Z-scheme heterojunction (named BMFe) was synthesized first time via facile strategy. Compared with pristine BiOI MIL-53(Fe) catalysts, two-dimensional/three-dimensional (2D/3D) catalyst manifested remarkable catalytic performance toward degradation of phenol, bisphenol A, methylene blue, carbamazepine, which is attributed mainly to interfacial integration efficient charge separation. By virtue coupling at interface, as confirmed by XPS, 57Fe Mossbauer spectroscopy, DFT calculations, BMFe promoted transfer electron-hole pairs improved chemical activation hydrogen peroxide. The subsequent holes, free radicals, nonradicals can effectively continuously decompose pollutants, achieving positive synergistic effect between photocatalysis reactions. Simultaneously, specially designed BiOX(X = Br, Cl)/MIL-53(Fe) BiOI/Fe-MOFs(MIL-101, MIL-88) heterojunctions also exhibited advanced oxidative capacity organic pollutants. Given their practical value industrial applications, beads (1.0 ± 0.15 mm) blend cross-linking method significantly advance long-term stability recyclability. Fe-based metal-organic frameworks bismuth oxyhalide semiconductors provides new perspective on developing