Citation: Fang Jing, Yanmeng Guo, Bo Li, Yi-Fan Chen, Chunman Jia, Jianwei Li. 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 TiO₂[J]. Chinese Chemical Letters, ;2022, 33(3): 1303-1307. doi: 10.1016/j.cclet.2021.07.056 shu

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 TiO₂

Fang Jing ^a ,
Yanmeng Guo ^a ,
Bo Li ^a ,
Yi-Fan Chen ^{a, *,} ,
Chunman Jia ^{a, *,} ,
Jianwei Li ^{a, b, *,}

a.
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
b.
MediCity Research Laboratory, University of Turku, Tykistökatu 6, Turku 20520, Finland

^**

chenyifan@hainanu.edu.cn

jiachunman@hainanu.edu.cn

jianwei.li@utu.fi

Received Date: 30 May 2021
Revised Date: 14 July 2021
Accepted Date: 26 July 2021
Available Online: 31 July 2021
Fund Project: the financial support from Hainan Province Natural Science Foundation of China 219QN151the National Natural Science Foundation of China 21801052Hainan University Start-up Fund KYQD(ZR)1852the Construction Program of Research Platform in Hainan University ZY2019HN09

Figures(6)

Titanium dioxide (TiO₂) 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 TiO₂ 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 TiO₂. The energy band gap of the resulting hybrid material decreased to 2.9 eV and the photocatalytic hydrogen production performance reached 745.0 µmol 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.
- Photocatalysis,
- TiO₂,
- Benzo[1, 2-b: 4, 5-b']dithiophene polythiophene,
- Organic-inorganic hybrid materials,
- Sol-gel process
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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 TiO2

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通讯作者: 陈斌, bchen63@163.com

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 TiO₂