Citation: Feifei Mei, Zhen Li, Kai Dai, Jinfeng Zhang, Changhao Liang. Step-scheme porous g-C₃N₄/Zn_0.2Cd_0.8S-DETA composites for efficient and stable photocatalytic H₂ production[J]. Chinese Journal of Catalysis, ;2020, 41(1): 41-49. doi: S1872-2067(19)63389-9 shu

Step-scheme porous g-C₃N₄/Zn_0.2Cd_0.8S-DETA composites for efficient and stable photocatalytic H₂ production

a College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei 235000, Anhui, China;
b Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, Anhui, China

Received Date: 8 April 2019
Revised Date: 1 May 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (51572103, 51502106), the Distinguished Young Scholar of Anhui Province (1808085J14), the Foundation for Young Talents in College of Anhui Province (gxyqZD2017051), the Key Foundation of Educational Commission of Anhui Province (KJ2016SD53) and Innovation Team of Design and Application of Advanced Energetic Materials (KJ2015TD003).

In recent years, environmental pollution and energy crisis have become increasingly serious issues owing to the burning of fossil fuels. Among the many technologies, decomposition of water to produce hydrogen has attracted much attention because of its sustainability and non-polluting characteristic. However, highly efficient decomposition of water that is driven by visible light is still a challenge. Herein, we report the large-scale preparation of step-scheme porous graphite carbon nitride/Zn_0.2Cd_0.8S-diethylenetriamine (Pg-C₃N₄/Zn_0.2Cd_0.8S-DETA) composite by a facile solvothermal method. It was found by UV-vis spectroscopy that 15%Pg-C₃N₄/Zn_0.2Cd_0.8S-DETA exhibited suitable visible absorption edge and band gap for water decomposition. The hydrogen production rate of 15%Pg-C₃N₄/Zn_0.2Cd_0.8S-DETA composite was 6.69 mmol g^-1 h^-1, which was 16.73, 1.61, and 1.44 times greater than those of Pg-C₃N₄, CdS-DETA, and Zn_0.2Cd_0.8S-DETA, respectively. In addition, 15%Pg-C₃N₄/Zn_0.2Cd_0.8S-DETA composite displayed excellent photocatalytic stability, which was maintained for seven cycles of photocatalytic water splitting test. We believe that 15%Pg-C₃N₄/Zn_0.2Cd_0.8S-DETA composite can be a valuable guide for the development of solar hydrogen production applications in the near future.
- Pg-C₃N₄,
- Zn_0.2Cd_0.8S,
- Diethylenetriamine,
- Photocatalysis,
- Step-scheme porous composite
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Step-scheme porous g-C3N4/Zn0.2Cd0.8S-DETA composites for efficient and stable photocatalytic H2 production

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Step-scheme porous g-C₃N₄/Zn_0.2Cd_0.8S-DETA composites for efficient and stable photocatalytic H₂ production