Open AccessConstruction of a novel supramolecular self‐assembly photocatalyst for full visible light spectrum photooxidation of phenol
Author(s) -
Zhang Kai,
Yang Wenjuan,
Ge Zaochuan,
Yang Qingui,
Yang Haipeng
Publication year - 2021
Publication title -
nano select
Language(s) - English
Resource type - Journals
ISSN - 2688-4011
DOI - 10.1002/nano.202000086
Subject(s) - diimide , perylene , visible spectrum , photochemistry , phenol , photocatalysis , catalysis , materials science , heterojunction , supramolecular chemistry , chemistry , optoelectronics , organic chemistry , molecule
The sluggish full visible light response of organic supramolecular catalysts is a challenge that greatly restricts their development in the photocatalytic field. Herein, we successfully fabricated a K, Cl‐codoped Bi 2 WO 6 /perylene‐diimide(PDI) catalyst with a novel, general, and facile ultrasound assisted water bath heating method. The UV adsorption onset of K, Cl‐codoped Bi 2 WO 6 /PDI is redshifted from 750 to 760 nm compared with that of the heterojunction of Bi 2 WO 6 /PDI. Under visible light, the phenol is thoroughly mineralized into CO 2 and H 2 O, and the phenol degradation rate was three times higher than that of pure Bi 2 WO 6 /PDI. The electrons transfer from PDI to K‐ and Cl‐codoped Bi 2 WO 6 /PDI according to the charge density difference calculation. The built‐in potential of K‐ and Cl‐codoped Bi 2 WO 6 /PDI could increase from 2.09 to 5.54 eV. The excellent full visible light spectrum photooxidation of phenol is attributed to the suitably strong built‐in potential at the heterojunction between PDI and K, Cl‐codoped Bi 2 WO 6 .