Construction of 2D MOFs@reduced Graphene Oxide Nanocomposites with Enhanced Visible Light‐induced Fenton‐like Catalytic Performance by Seeded Growth Strategy

Abstract

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.

Graphene-Based Metal–Organic Framework Hybrids for Applications in Catalysis, Environmental, and Energy Technologies

“…A range of techniques have therefore been used to remove dyes from water including ultrafiltration, absorption, electrocoagulation, photodegradation, and ozonation . Because light-assisted degradation is seen as a particularly effective technique for this purpose, a large variety of graphene- and MOF-based hybrids have been designed for the photocatalytic degradation of dyes like rhodamine B (RhB), methylene blue (MB), methyl orange (MO), triphenylmethane, gentian violet, reactive yellow 145, rhodamine 6G, and malachite green. ,,− …”