Citation: Junfeng Huang, Chenyang Li, Xiaoyun Hu, Jun Fan, Binran Zhao, Enzhou Liu. K₂HPO₄-mediated Photocatalytic H₂ Production over NiCoP/RP Heterojunction[J]. Chinese Journal of Structural Chemistry, ;2022, 41(6): 220606. doi: 10.14102/j.cnki.0254-5861.2021-0055 shu

K₂HPO₄-mediated Photocatalytic H₂ Production over NiCoP/RP Heterojunction

Junfeng Huang ¹ ,
Chenyang Li ¹ ,
Xiaoyun Hu ² ,
Jun Fan ¹ ,
Binran Zhao ^1,, ,
Enzhou Liu ^1,,

1.
School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, China
2.
School of Physics, Northwest University, Xi'an 710069, China

Corresponding author: Binran Zhao, zhaobr@nwu.edu.cn Enzhou Liu, liuenzhou@nwu.edu.cn
Received Date: 16 December 2021
Accepted Date: 29 January 2022

Figures(6)

In this work, bimetallic NiCoP nanoparticles (NPs) were firstly prepared by a solvothermal method using red phosphorus (RP) as P source, and it was combined with RP nanosheets via a physical grinding process. Investigation indicates that NiCoP has better charge transfer ability and faster H₂ releasing kinetics than the corresponding single metal phosphides alone. 6 wt% NiCoP/RP exhibits an excellent H₂ evolution activity in 20 vol.% triethanol-amine/water solution under a 300W Xe-lamp irradiation, and the corresponding H₂ production rate is 1535.6 μmol·g^-1·h^-1, which is 7.4, 3.2 and 2.6 times higher than those of pure RP, 6 wt% Co₂P/RP and 6 wt% Ni₂P/RP, respectively. In addition, we demonstrate that K₂HPO₄ can further enhance the H₂ evolution kinetics by inducing a new H⁺ reduction path, when appropriate K₂HPO₄ is introduced into the reaction solution. The H₂ production rate of 6 wt% NiCoP/RP is boosted from 1535.6 to 2793.9 μmol·g^-1·h^-1 due to the easier combination between H⁺ and electrons with the assistance of HPO₄^2-. It is 13.4 times higher than that of pure RP. This work demonstrates that bimetallic phosphides with suitable electrolytes can greatly enhance the photocatalytic H₂ evolution efficiency.
- photocatalysis,
- hydrogen,
- red phosphorus,
- bimetallic cocatalyst,
- K₂HPO₄
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

K2HPO4-mediated Photocatalytic H2 Production over NiCoP/RP Heterojunction

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通讯作者: 陈斌, bchen63@163.com

K₂HPO₄-mediated Photocatalytic H₂ Production over NiCoP/RP Heterojunction