▎ 摘　　要

Using the mental-organic frameworks (MOFs) as a promising precursor to derive the Fe-N-C catalyst (FexCN@GN) with Fe-N-x moieties for sulfate radical (SO4 center dot-) based advanced oxidation process (SR-AOP) for Trichlorophenol degradation. The catalyst exhibited high activity in activation of PS to generate free radicals and achieved 92% degradation of TCP within 60 min. Through the characterization of the catalyst and EPR detection, we found that the sp(2)-hybridized carbon structure on GO can adsorb TCP strongly and fix free radicals on the surface of the catalyst at the same time, so that free radicals can react with TCP rapidly and avoid long-distance mass transfer loss in solution. We also found that N atom plays an important role in the catalyst, and the Fe-Nx active center formed by pyridine N and Fe atoms is the active center of the catalytic reaction. Based on this, the degradation mechanism is deduced. In conclusion, this work provided new Fe-N-C-based nanocatalysts for the generation of surface radicals, providing a new pathway for the removal of emerging contaminants. [GRAPHICS]