Citation: Shuaiyang Zhang, Yan Yang, Yunpu Zhai, Jiaqi Wen, Meng Zhang, Jingkun Yu, Siyu Lu. A novel P-doped and NCDs loaded g-C₃N₄ with enhanced charges separation for photocatalytic hydrogen evolution[J]. Chinese Chemical Letters, ;2023, 34(4): 107652. doi: 10.1016/j.cclet.2022.06.075 shu

A novel P-doped and NCDs loaded g-C₃N₄ with enhanced charges separation for photocatalytic hydrogen evolution

Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China

yunpu.zhai@zzu.edu.cn

sylu2013@zzu.edu.cn

Received Date: 31 March 2022
Revised Date: 27 June 2022
Accepted Date: 28 June 2022
Available Online: 3 July 2022

Figures(4)

Graphite carbon nitride (g-C₃N₄) is a promising non-metal photocatalyst for photocatalytic hydrogen production, but its performance is still limited due to sluggish charges separation and low utilization of light. In this work, P-doped and N-doped carbon dots (NCDs) supported g-C₃N₄ were successfully prepared via hydrothermal and polymerization reactions. The sub-bandgap formed by P-doping enhances the utilization of visible light, and the high electron density of P sites is conducive to the trapping of holes. NCDs also improve light utilization and, more importantly, act as electron acceptors and transporters to promote electron transport. The built-in electric field formed by the synergy of P-doping and NCDs-loading greatly promotes the separation of charges. The PCN/NCDs showed a significantly improved hydrogen evolution activity of 3731 µmol h⁻¹ g⁻¹, which was 6.7 times that of pure carbon nitride (560 µmol h⁻¹ g⁻¹). This strategy may be generalized to the design of g-C₃N₄ -based photocatalysts, facilitating the separation of charges for enhanced catalytic activity.
- g-C₃N₄,
- N-doped carbon dots,
- P-doping,
- Photocatalyst,
- Hydrogen evolution
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沈阳化工大学材料科学与工程学院沈阳 110142

A novel P-doped and NCDs loaded g-C3N4 with enhanced charges separation for photocatalytic hydrogen evolution

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通讯作者: 陈斌, bchen63@163.com

A novel P-doped and NCDs loaded g-C₃N₄ with enhanced charges separation for photocatalytic hydrogen evolution