物理化学学报 >> 2024, Vol. 40 >> Issue (12): 2408005.doi: 10.3866/PKU.WHXB202408005

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利用改性g-C3N4光催化还原CO2

王雪娇1, 董隋颖1, 戚克振1,*(), PopkovVadim2,*(), 项祥林3,*()   

  1. 1 大理大学, 药学院, 云南 大理 671000
    2 Hydrogen Energy Laboratory, Ioffe Institute, Saint Petersburg 194021, Russia
    3 昆明理工大学, 材料科学与工程学院, 昆明 650093
  • 收稿日期:2024-08-04 修回日期:2024-09-12 录用日期:2024-09-12 发布日期:2024-11-09
  • 通讯作者: Email: qkzh2003@aliyun.com (戚克振)vadim.i.popkov@gmail.com (Vadim Popkov)xiangxianglin@kust.edu.cn (项祥林)
  • 基金资助:
    国家自然科学基金(22268003); 国家自然科学基金(52272287); 兴滇英才支持计划项目(XDYC-QNRC-2022-0525); 云南省科技厅项目(202305AF150116); 云南省科技厅项目(202301AT070027)

Photocatalytic CO2 Reduction by Modified g-C3N4

Xuejiao Wang1, Suiying Dong1, Kezhen Qi1,*(), Vadim Popkov2,*(), Xianglin Xiang3,*()   

  1. 1 College of Pharmacy, Dali University, Dali 671000, Yunnan Province, China
    2 Hydrogen Energy Laboratory, Ioffe Institute, Saint Petersburg 194021, Russia
    3 Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
  • Received:2024-08-04 Revised:2024-09-12 Accepted:2024-09-12 Published:2024-11-09
  • Contact: Email: qkzh2003@aliyun.com (Kezhen Qi)vadim.i.popkov@gmail.com (Vadim Popkov )xiangxianglin@kust.edu.cn (Xianglin Xiang)
  • Supported by:
    the National Natural Science Foundation of China(22268003); the National Natural Science Foundation of China(52272287); Xingdian Talent Support Program of Yunnan Province(XDYC-QNRC-2022-0525); Projects from Yunnan Province(202305AF150116); Projects from Yunnan Province(202301AT070027)

摘要:

化石燃料的燃烧导致CO2排放量显著增大,对环境构成严重威胁。光催化CO2还原是减少全球变暖的重要手段,本文探讨了石墨相氮化碳(g-C3N4)在此领域中的潜在应用。然而,光生载流子的复合较快、可见光吸收能力差以及缺乏活性位点等关键因素限制了g-C3N4的光催化CO2还原活性。为了解决这些问题,人们采用了多种改性策略,包括调整g-C3N4的形貌(如量子点、纳米棒、纳米管、纳米片、空心球等),掺杂不同类型原子,以及与其他半导体复合形成异质结。g-C3N4作为光催化剂已展现出光催化还原CO2的潜力,但仍需进一步研究和创新,本文重点讨论了S型异质结在提高g-C3N4光催化CO2还原性能方面的作用,以克服其当前催化剂开发及应用的局限性。

关键词: g-C3N4, 光催化, CO2还原, 改性, S型异质结

Abstract:

The use of carbon-based fuels causes a significant increase in CO2 emissions, posing a serious threat to the environment. This review explores the potential application of graphitic carbon nitride (g-C3N4) in photocatalytic CO2 reduction as a strategy to mitigate global warming. The effectiveness of g-C3N4 (gCN) in this process is hindered by several factors, including rapid exciton recombination, limited solar light absorption, and a lack of active sites for conducting the reduction. To address these challenges, various amendment techniques have been executed, such as adjusting the morphology of g-C3N4, doping it with different atoms, and forming heterojunctions with other semiconductors. This review highlights the role of S-scheme heterojunctions in expanding the photocatalytic activity of g‑C3N4 and emphasizes that, despite its potential as a photocatalyst for CO2 reduction, further research and innovation are essential to overcome its current limitations.

Key words: g-C3N4, Photocatalysis, CO2 reduction, Modification, S-scheme heterojunction