▎ 摘 要
Seeded growth strategy to synthesize NH2-MIL-88B(Fe) embedded on reduced graphene oxide (NM88@RGO) is reported in this work. The 2D NM88@RGO composites show intensive Fenton-like catalytic performance in the visible light-driven degradation of contaminant. Among as-synthesized samples, NM88@RGO-15 is confirmed to possess the highest catalytic activity to the removal of RhB within 1 h and the efficiency is held at high level after 5 cycles. Besides, the synergistic interaction between NH2-MIL-88B(Fe) and RGO and photocatalytic mechanism are investigated thoroughly by the electrochemical measurements, the trap experiment of active species, and the analysis of energy-level position. RGO is capable of acting as a template to direct the formation of 2D nanostructures and behaves as an electron-captured net to facilitate the charge transfer and inhibit the recombination of electron-holes on the NH2-MIL-88B(Fe). The homogeneous distribution of Fe-MOFs particles on RGO nanosheets is in favor of the formation and exposure of active sites for light-driven Fenton-like reaction.