Controlled preparation of P-doped g-C3N4 nanosheets for efficient photocatalytic hydrogen production

doi:10.1016/j.cjche.2020.06.037

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (10): 2677-2688.DOI: 10.1016/j.cjche.2020.06.037

• Energy, Resources and Environmental Technology • Previous Articles Next Articles

Controlled preparation of P-doped g-C₃N₄ nanosheets for efficient photocatalytic hydrogen production

Qiachun Lin, Zesheng Li, Tingjian Lin, Bolin Li, Xichun Liao, Huiqing Yu, Changlin Yu

College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China

Received:2020-05-27 Revised:2020-06-21 Online:2020-12-03 Published:2020-10-28
Contact: Zesheng Li, Changlin Yu
Supported by:
This research was supported by the National Natural Science Foundation of China (Nos. 21777034 and 21606052), Natural Science Foundation of Guangdong Province (2020A1515010344), Science and Technology Innovation Project of Guangdong Province College Students (201811656019), Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019), Guangdong Basic and Applied Basic Research Foundation (2019A1515011249), Key Research Project of Natural Science of Guangdong Provincial Department of Education (2019KZDXM010), the program for Innovative Research Team of Guangdong University of Petrochemical Technology.

Controlled preparation of P-doped g-C₃N₄ nanosheets for efficient photocatalytic hydrogen production

Qiachun Lin, Zesheng Li, Tingjian Lin, Bolin Li, Xichun Liao, Huiqing Yu, Changlin Yu

College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China

通讯作者: Zesheng Li, Changlin Yu
基金资助:
This research was supported by the National Natural Science Foundation of China (Nos. 21777034 and 21606052), Natural Science Foundation of Guangdong Province (2020A1515010344), Science and Technology Innovation Project of Guangdong Province College Students (201811656019), Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2019), Guangdong Basic and Applied Basic Research Foundation (2019A1515011249), Key Research Project of Natural Science of Guangdong Provincial Department of Education (2019KZDXM010), the program for Innovative Research Team of Guangdong University of Petrochemical Technology.

Abstract

Abstract: Hydrogen production by photolysis of water by sunlight is an environmentally-friendly preparation technology for renewable energy. Graphitic carbon nitride (g-C₃N₄), despite with obvious catalytic effect, is still unsatisfactory for hydrogen production. In this work, phosphorus element is incorporated to tune g-C₃N₄'s property through calcinating the mixture of g-C₃N₄ and NaH₂PO₂, sacrificial agent and co-catalyst also been supplied to help efficient photocatalytic hydrogen production. Phosphorus (P) doped g-C₃N₄ samples (PCN-S) were prepared, and their catalytic properties were studied. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and ultraviolet diffuse reflection (UV-DRS) were used to study their structures and morphologies. The results show that the reaction rate of PCN-S is 318 μmol·h^-1·g^-1, which is 2.98 times as high as pure carbon nitride nanosheets (CN) can do. Our study paves a new avenue, which is simple, environment-friendly and sustainable, to synthesize highly efficient P doping g-C₃N₄ nanosheets for solar energy conversion.

Key words: Graphitic carbon nitride, P-doping, Carbon defect, Pt co-catalyst, Hydrogen evolution

摘要： Hydrogen production by photolysis of water by sunlight is an environmentally-friendly preparation technology for renewable energy. Graphitic carbon nitride (g-C₃N₄), despite with obvious catalytic effect, is still unsatisfactory for hydrogen production. In this work, phosphorus element is incorporated to tune g-C₃N₄'s property through calcinating the mixture of g-C₃N₄ and NaH₂PO₂, sacrificial agent and co-catalyst also been supplied to help efficient photocatalytic hydrogen production. Phosphorus (P) doped g-C₃N₄ samples (PCN-S) were prepared, and their catalytic properties were studied. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and ultraviolet diffuse reflection (UV-DRS) were used to study their structures and morphologies. The results show that the reaction rate of PCN-S is 318 μmol·h^-1·g^-1, which is 2.98 times as high as pure carbon nitride nanosheets (CN) can do. Our study paves a new avenue, which is simple, environment-friendly and sustainable, to synthesize highly efficient P doping g-C₃N₄ nanosheets for solar energy conversion.

关键词: Graphitic carbon nitride, P-doping, Carbon defect, Pt co-catalyst, Hydrogen evolution

Qiachun Lin, Zesheng Li, Tingjian Lin, Bolin Li, Xichun Liao, Huiqing Yu, Changlin Yu. Controlled preparation of P-doped g-C₃N₄ nanosheets for efficient photocatalytic hydrogen production[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2677-2688.

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Controlled preparation of P-doped g-C₃N₄ nanosheets for efficient photocatalytic hydrogen production

Controlled preparation of P-doped g-C₃N₄ nanosheets for efficient photocatalytic hydrogen production

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