SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2020, Vol. 28 ›› Issue (10): 2677-2688.DOI: 10.1016/j.cjche.2020.06.037

• Energy, Resources and Environmental Technology • 上一篇    下一篇

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   

  1. College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China
  • 收稿日期:2020-05-27 修回日期:2020-06-21 出版日期:2020-10-28 发布日期:2020-12-03
  • 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.

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   

  1. College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China
  • Received:2020-05-27 Revised:2020-06-21 Online:2020-10-28 Published:2020-12-03
  • 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.

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

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