Enhancement of the degradation ability for organic pollutants via the synergistic effect of photoelectrocatalysis on a self-assembled perylene diimide (SA-PDI) thin film

作     者：Hong Miao Jun Yang Guilong Peng Huiquan Li Yongfa Zhu 

作者机构：Department of ChemistryTsinghua UniversityBeijing 100084China School of EnvironmentBeijing Key Laboratory for Emerging Organic Contaminants ControlState Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC)Tsinghua UniversityBeijing 100084China Anhui Provincical Key Laboratory for Degradation and Monitoring of Pollution of the EnvironmentSchool of Chemistry and Materials EngineeringFuyang Normal UniversityFuyang 236037China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2019年第64卷第13期

页      面：896-903页

核心收录：

学科分类：07[理学] 08[工学] 

基　　金：partly supported by the National Natural Science Foundation of China (21673126, 21437003, 21761142017, and 21621003) Collaborative Innovation Center for Regional Environmental Quality 

主　　题：Photoelectrocatalytic oxidation PDI electrode Phenol Degradation 

摘      要：A self-assembled perylene diimide(SA-PDI)film was prepared on an indium-tin-oxide(ITO)substrate and acted as a photoanode for the photoelectrocatalytic(PEC)degradation of some emerging contaminants under visible light irradiation(λ420 nm)and applied *** to the synergistic effect,the photocatalytic degradation rate by the SA-PDI film under visible light irradiation and an applied voltage of 2.1 V was 2.72 times and 14.5 times those of the PC and EC processes,*** visible light irradiation not only generated a promoting effect on electrocatalytic(EC)oxidation at potentials above1.2 V but also generated many more h+ for promoting the electrocatalytic oxidation of ***,an applied voltage above 1.2 V could effectively improve the separation rate of electrons from the SA-PDI electrodes to the Pt electrodes,and then,much more ·O2-and ·OH could be generated for improving the photocatalytic(PC)oxidation ***,the h+,·OH and ·O2-could improve the synergistic effect of phenol oxidation during the PEC ***,the SA-PDI film appeared to have satisfactory stability in the PEC *** SA-PDI film was also proven to be effective for two other contaminants,namely,2,4-dichlorophenol,and ciprofloxacin.