SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2024, Vol. 66 ›› Issue (2): 40-50.DOI: 10.1016/j.cjche.2023.11.005

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Pt nanoclusters modified porous g-C3N4 nanosheets to significantly enhance hydrogen production by photocatalytic water reforming of methanol

Yi-Fei Liang, Jin-Rong Lu, Shang-Kun Tian, Wen-Quan Cui, Li Liu   

  1. Hebei Provincial Key Laboratory of Environmental Photocatalytic and Electrocatalytic Materials, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China
  • Received:2023-03-14 Revised:2023-11-01 Online:2024-04-20 Published:2024-02-28
  • Contact: Jin-Rong Lu,E-mail:lujinrong@ncst.edu.cn;Li Liu,E-mail:chemll@126.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (51672081), the Program of Tri-three Talents Project of Hebei Province (China, A202110002), the Young Top Talents Fund Program of Higher Education Institutions of Heibei Province (BJ2020009), and the Project of Science and Technology Innovation Team, Tangshan (20130203D).

Pt nanoclusters modified porous g-C3N4 nanosheets to significantly enhance hydrogen production by photocatalytic water reforming of methanol

Yi-Fei Liang, Jin-Rong Lu, Shang-Kun Tian, Wen-Quan Cui, Li Liu   

  1. Hebei Provincial Key Laboratory of Environmental Photocatalytic and Electrocatalytic Materials, College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, China
  • 通讯作者: Jin-Rong Lu,E-mail:lujinrong@ncst.edu.cn;Li Liu,E-mail:chemll@126.com
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (51672081), the Program of Tri-three Talents Project of Hebei Province (China, A202110002), the Young Top Talents Fund Program of Higher Education Institutions of Heibei Province (BJ2020009), and the Project of Science and Technology Innovation Team, Tangshan (20130203D).

Abstract: For the use of green hydrogen energy, it is crucial to have efficient photocatalytic activity for hydrogen generation by water reforming of methanol under mild conditions. Much attention has been paid to g-C3N4 as a promising photocatalyst for the generation of hydrogen. To improve the separation of photogenerated charge, porous nanosheet g-C3N4 was modified with Pt nanoclusters (Pt/g-C3N4) through impregnation and following photo-induced reduction. This catalyst showed excellent photocatalytic activity of water reforming of methanol for hydrogen production with a 17.12mmol·g-1·h-1 rate at room temperature, which was 311 times higher than that of the unmodified g-C3N4. The strong interactions of Pt–N in Pt/g-C3N4 constructed effective electron transfer channels to promote the separation of photo-generated electrons and holes effectively. In addition, in-situ infrared spectroscopy was used to investigate the intermediates of the hydrogen production reaction, which proved that methanol and water eventually turn into H2 and CO2 via formaldehyde and formate. This study provides insights for understanding the photocatalytic hydrogen production in the water reforming of methanol.

Key words: Water reforming of methanol, Photocatalysis, g-C3N4, Pt nanoclusters, Hydrogen production

摘要: For the use of green hydrogen energy, it is crucial to have efficient photocatalytic activity for hydrogen generation by water reforming of methanol under mild conditions. Much attention has been paid to g-C3N4 as a promising photocatalyst for the generation of hydrogen. To improve the separation of photogenerated charge, porous nanosheet g-C3N4 was modified with Pt nanoclusters (Pt/g-C3N4) through impregnation and following photo-induced reduction. This catalyst showed excellent photocatalytic activity of water reforming of methanol for hydrogen production with a 17.12mmol·g-1·h-1 rate at room temperature, which was 311 times higher than that of the unmodified g-C3N4. The strong interactions of Pt–N in Pt/g-C3N4 constructed effective electron transfer channels to promote the separation of photo-generated electrons and holes effectively. In addition, in-situ infrared spectroscopy was used to investigate the intermediates of the hydrogen production reaction, which proved that methanol and water eventually turn into H2 and CO2 via formaldehyde and formate. This study provides insights for understanding the photocatalytic hydrogen production in the water reforming of methanol.

关键词: Water reforming of methanol, Photocatalysis, g-C3N4, Pt nanoclusters, Hydrogen production