Citation: Yanbing Li, Zhiliang Jin, Lijun Zhang, Kai Fan. Controllable design of Zn-Ni-P on g-C₃N₄ for efficient photocatalytic hydrogen production[J]. Chinese Journal of Catalysis, ;2019, 40(3): 390-402. doi: 10.1016/S1872-2067(18)63173-0 shu

Controllable design of Zn-Ni-P on g-C₃N₄ for efficient photocatalytic hydrogen production

Yanbing Li ^a,b, ,
Zhiliang Jin ^a,b ,
Lijun Zhang ^a,b ,
Kai Fan ^a,b

a School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, Ningxia, China;
b Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, Ningxia, China

Received Date: 9 August 2018
Revised Date: 20 September 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21862002, 41663012), the Innovation Team Project of North Minzu University (YCX18082), and the Scientific Research Project of North Minzu University (2016 HG-KY 06).

Synthesizing a stable and efficient photocatalyst has been the most important research goal up to now. Owing to the dominant performance of g-C₃N₄ (graphitized carbonitride), an ordered assemble of a composite photocatalyst, Zn-Ni-P@g-C₃N₄, was successfully designed and controllably prepared for highly efficient photocatalytic H₂ evolution. The electron transport routes were successfully adjusted and the H₂ evolution was greatly improved. The maximum amount of H₂ evolved reached about 531.2 μmol for 5 h over Zn-Ni-P@g-C₃N₄ photocatalyst with a molar ratio of Zn to Ni of 1:3 under illumination of 5 W LED white light (wavelength 420 nm). The H₂ evolution rate was 54.7 times higher than that over pure g-C₃N₄. Moreover, no obvious reduction in the photocatalytic activity was observed even after 4 cycles of H₂ production for 5 h. This synergistically increased effect was confirmed through the results of characterizations such as XRD, TEM, SEM, XPS, N₂ adsorption, UV-vis DRS, transient photocurrent, FT-IR, transient fluorescence, and Mott-Schottky studies. These studies showed that the Zn-Ni-P nanoparticles modified on g-C₃N₄ provide more active sites and improve the efficiency of photogenerated charge separation. In addition, the possible mechanism of photocatalytic H₂ production is proposed.
- Zn-Ni-P,
- g-C₃N₄,
- H₂ production,
- Controllable design,
- Photocatalyst
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Controllable design of Zn-Ni-P on g-C3N4 for efficient photocatalytic hydrogen production

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通讯作者: 陈斌, bchen63@163.com

Controllable design of Zn-Ni-P on g-C₃N₄ for efficient photocatalytic hydrogen production