Description:
Molecularly imprinted membranes (MIMs) are promising in water treatment because of its predetermined selectivity, but the limitations of trade-off relationship between permeability and selectivity, as well as membrane failure hinder their wider applications. Herein, we report a visible light driven loading strategy for fabricating MOFs self-assembled molecularly imprinted membranes (SA-MIMs) with enhanced selective separation performance and photoinduced rapidly regeneration ability. The visible light driven loading design leverages on the UiO-66-NH 2 as visible light absorption medium to generate reactive oxygen species (ROS) to promote dopamine polymerization, which in turn facilitates the loading of the MOFs on the substrate membranes under mild conditions. The imprinted polymers layer was synthesized in water via reverse atom transfer radical polymerization (RATRP) that imparted the specific recognition ability and excellent water compatibility for the SA-MIMs. As a result, the prepared SA-MIMs display enhanced rebinding selectivity and permselectivity (α CF/PM = 4.02 and α CF/LF = 3.23) and permselectivity ( β CF/PM = 3.44 and β CF/LF = 3.51) for target molecules. More importantly, based on the good photocatalytic activity of UiO-66-NH 2 , the target molecules adsorbed on the specific binding sites can be degraded and removed, thereby achieving photoinduced rapidly regeneration. In addition, the enhanced and long lasting selective separation performance of SA-MIMs in the regeneration assisted continuous separation process indicate that the potential in practical application