文献类型：期刊文献

英文题名：Structural Nitrogen and Defect Engineering Synergistically Drive Directional Electron Injection into Metal Redox Couples in Photo-Fenton-Like Systems

作者：Bai, He[1]; Yang, Yuxiang[1]; Huang, Yan[1]; Huan, Weiwei[2]; Yuan, Hongming[3]; Ni, Chaoying[4]

机构：[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] College of Chemistry and Materials Engineering, Zhejiang A&F University, Zhejiang, Hangzhou, 311300, China; [3] State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University [JLU], Changchun, 130012, China; [4] Department of Materials Science and Engineering, University of Delaware, DE, 19716, United States

年份：2025

外文期刊名：SSRN

收录：EI(收录号：20250252399)

语种：英文

外文关键词：Catalyst activity - Cerium compounds - Cobalt compounds - Defect engineering - Electron injection - Electrons - Free radical reactions - Nitrogen - Organometallics - Oxidation - Remediation - Sulfur compounds - Surface defects - Yarn

摘要：The modulation of redox couples plays a crucial role in advanced oxidation processes. In this work, the abundant structural nitrogen (N) sites within the Schiff base Covalent Organic Frameworks (COF) are strategically employed, combined with the synergistic defect engineering effect, to facilitate the directional injection of surface electrons from COF nanotubes to the metal redox couples (Co/Ce) upon photoexcitation. The superior coordination ability of the structural N sites ensures the in-situ anchoring of the Co/Ce metal redox couples, while the intrinsic electron-withdrawing properties, in synergy with the "trapping effect" of the carbon defects, offer enhanced force for the injection of photo-generated electrons into the metal redox couples. Density Functional Theory (DFT) and quenching experiment demonstrate that the NBC-COF-CoCe photo-Fenton-like (PFL) system can efficiently produce hydroxyl radicals (·OH), sulfate radicals (SO4·-), and induce the generation of Co(IV)=O, collectively enhancing Levofloxacin (LFX) degradation and modulating the self-regeneration of the Co/Ce active sites within the catalyst structure. The investigation into the simulated application of the NBC-COF-CoCe PFL system further highlights the potential of self-regenerating PFL systems in practical environmental remediation. ? 2025, The Authors. All rights reserved.