A p-p stacking perylene imide/Bi2WO6 hybrid with dual transfer approach for enhanced photocatalytic degradation
Jun Han a , Yanan Deng a , Najun Li a,b, *（李娜君）, Dongyun Chen a,b , Qingfeng Xu a,b , Hua Li a,b , Jinghui He a,b , Jianmei Lu a,b, *（路建美）
a College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215123, China
b National Center of International Research on Intelligent New Nanomaterials and Detection Technologies in Environmental Protection, Suzhou, Jiangsu 215123, China
Journal of Colloid and Interface Science 582 (2021) 1021--1032
A new broad-spectrum responsive organic-inorganic hybrid photocatalyst ([email protected]) was successfully prepared by in-situ growing Bi2WO6 nanosheets onto the surface of π-π stacking perylene imide. The obtained [email protected] hybrids with different composition exhibited enhanced photocatalytic activity for Bisphenol A (BPA) degradation. Among them, 30% [email protected] exhibited optimal photocatalytic degradation efficiency, which is 2.6 and 3.9 times higher than that of pristine PI and BWO, respectively. Furthermore, [email protected] also performed good stability and recyclability. Remarkably, the π-conjugation of PI facilitated the separation of charge carriers and improved the utilization of sunlight for [email protected] The introduction of BWO nanosheets also enhanced the adsorption capacity for contaminants and provided much more plentiful active sites, promoting the next photocatalytic reaction. Most importantly, [email protected] could produce abundant reactive species (such as 1O2 and ·OH) via the charge carrier transfer and energy transfer dual transfer approach, therefore leading to stronger oxidation ability. The photocatalytic degradation mechanism and pathway of the [email protected] hybrids were finally proposed. Overall, this present work might provide a new insight into the designing and preparation of efficient organic-inorganic hybrid photocatalysts for environmental-friendly removal of hazardous organic pollutants.
链接：https://www.sciencedirect.com/science/article/pii/S0021979720311929
