FeOOH photo-deposited perylene linear polymer with accelerated charge separation for photocatalytic overall water splitting  

作　　者：Haonan Ye Zhiqiang Wang Ke Hu Wenjun Wu Xueqing Gong Jianli Hua 

机构地区：[1]Key Laboratory for Advanced Material,Feringa Nobel Prize Scientist Joint Research Center,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China [2]Key Laboratory for Advanced Materials,Centre for Computational Chemistry and Research Institute of Industrial Catalysis,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China [3]Department of Chemistry,Fudan University,Shanghai 200433,China

出　　处：《Science China Chemistry》2022年第1期170-181,共12页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21788102,21971064,21772040);Shanghai Municipal Science and Technology Major Project(2018SHZDZX03);the Fundamental Research Funds for the Central Universities(222201717003,50321101918001);the Programme of Introducing Talents of Discipline to Universities(B16017)。

摘　　要：It is a challenge to develop single polymer-based photocatalyst for overall water splitting without adding sacrificial agents due to the insufficient driving force for charge separation and the lack of active sites of organic polymer.Metal oxyhyroxides are widely acted as co-catalyst for photoelectrocatalysis oxygen evolution reaction.Here,we firstly report the peryleno[1,12-bcd]thiophene sulfone-based linear co-polymer PS-5 for photocatalytic overall water splitting by photo-depositing simple and low-cost cocatalyst FeOOH under the visible-light illumination.The density functional theory(DFT)calculations and experimental results indicated clearly that the oxygen vacancies-richβ-FeOOH can effectively promote the separation of photo-generated excitons and provide active sites for photocatalytic oxygen evolution reaction.As a result,the average H_(2)and O_(2)production rates of optimized PS-5/β-FeOOH-0.2M reach at~170 and~76.6μmol h^(-1)g^(-1),respectively,with a stoichiometric ratio at about 2:1.This work provides a simple and low-cost method for the preparation of overall water splitting system based on polymer photocatalyst.

关 键 词：photocatalysis conjugated polymers FEOOH photo-deposited overall water splitting 

分 类 号：TQ116.2[化学工程—无机化工] TQ426TQ317