Enhanced photocatalytic hydrogen production under visible light of an organic-inorganic hybrid material based on enzo[1,2-b:4,5-b']dithiophene polymer and TiO_(2)  

作　　者：Fang Jing Yanmeng Guo Bo Li Yi-Fan Chen Chunman Jia Jianwei Li 

机构地区：[1]Hainan Provincial Key Laboratory of Fine Chemicals,Advanced Materials of Tropical Island Resources of Ministry of Education,School of Chemical Engineering and Technology,Hainan University,Haikou 570228,China [2]MediCity Research Laboratory,University of Turku,Tykistökatu 6,Turku 20520,Finland

出　　处：《Chinese Chemical Letters》2022年第3期1303-1307,共5页中国化学快报（英文版）

基　　金：financial support from Hainan Province Natural Science Foundation of China (No. 219QN151);the National Natural Science Foundation of China (21801052);Hainan University Start-up Fund (No. KYQD(ZR)1852);the Construction Program of Research Platform in Hainan University (No. ZY2019HN09)。

摘　　要：Titanium dioxide(TiO_(2))has been limited in photocatalysis due to its wide band gap(3.2 eV)and limited absorption in the ultraviolet range.Therefore,organic components have been introduced to hybrid with TiO_(2) for enhanced photocatalytic efficiency under visible light.Here,we report that benzo[1,2-b:4,5-b']dithiophene polymer was an ideal organic material for the preparation of a hybrid material with TiO_(2).The energy band gap of the resulting hybrid material decreased to 2.9 eV and the photocatalytic hydrogen production performance reached 745.0μmol g^(-1) h^(-1) under visible light irradiation.Meanwhile,the material still maintained the stability of hydrogen production performance after 40 h of photocatalytic cycles.The analysis of the transient current response and electrochemical impedance revealed that the main reasons for the enhanced water splitting of the hybrid materials were the faster separation of electron hole pairs and the lower recombination of photocarrier ions.Our findings suggest that polythiophene is a promising organic material for exploring hybrid materials with enhanced photocatalytic hydrogen production.

关 键 词：PHOTOCATALYSIS TiO_(2) Benzo[1 2-b:5-b’]dithiophene POLYTHIOPHENE Organic-inorganic hybrid materials Sol-gel process 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学] O644.1[理学—化学]