Supramolecular iron phthalocyanine organic polymer with robust built-in electric field and shorter migration distance for photocatalytic pollutant degradation and antibacterial

Abstract

Herein, exfoliated iron node and covalent bonding 2D phthalocyanine organic polymer (Ex-PcOP-Fe) nanosheets were prepared for the degradation of pollutants and effective antibacterial. Ex-PcOP-Fe nanosheets enabled a phenol degradation rate constant of 0.856 h-1 under full spectrum, which was approximately 18.6 times higher than metal-free phthalocyanine organic polymer (PcOP). Alternatively, Ex-PcOP-Fe nanosheets inactivated almost all P. syringae pv. tabaci under visible light. The significant photocatalytic activity of Ex-PcOP-Fe was derived from the robust built-in electric field contributed by the iron node, which boosted the rapid separation and mobility of photogenerated carriers. In addition, the covalent bonding of Ex-PcOP-Fe was conducive to shortening the electron migration distance. The phenol degradation rate of Ex-PcOP-Fe was 10 times that of phthalocyanine iron (PcFe). Consequently, the faster electron transfer kinetics and shorter electron migration distance resulted in highly efficient photocatalytic pollutant degradation and antibacterial activity of Ex-PcOP-Fe. This work provides a new method for elevating the activity of organic photocatalytic materials via metal regulation.