Acta Phys. -Chim. Sin. ›› 2025, Vol. 41 ›› Issue (5): 100039.doi: 10.1016/j.actphy.2024.100039

Special Issue: S-scheme heterojunction in photocatalysis

• REVIEW • Previous Articles     Next Articles

Recent Progress of Microstructure-Regulated g-C3N4 in Photocatalytic NO Conversion: The Pivotal Roles of Adsorption/Activation Sites

Hui Wang1, Abdelkader Labidi1, Menghan Ren1, Feroz Shaik2, Chuanyi Wang1,*()   

  1. 1 School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
    2 Department of Mechanical Engineering, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Kingdom of Saudi Arabia
  • Received:2024-11-06 Revised:2024-12-03 Accepted:2024-12-06 Published:2025-04-18
  • Contact: Email: wangchuanyi@sust.edu.cn; Tel.: +86-29-86131724 (Chuanyi Wang)
  • Supported by:
    the National Natural Science Foundation of China(52161145409); the National Natural Science Foundation of China(21976116); SAFEA of China ("Belt and Road" Innovative Talent Exchange Foreign Expert Project)(2023041004L); High-end Foreign Expert Project(G2023041021L); Alexander-von-Humboldt Foundation of Germany (Group-Linkage Program)

Abstract:

Photocatalytic nitric oxide (NO) conversion technology has the characteristics of high efficiency, economy, and environment friendly to remove NO using g-C3N4. Introducing new adsorption sites on the surface of g-C3N4 through microstructure control can alter the structure-activity relationship between g-C3N4 and gas molecules, thereby improving photocatalytic NO conversion activity and inhibiting NO2 generation. However, few review articles have focused on the microscopic effects of microstructural changes in g-C3N4 based materials on the adsorption and activation of NO and O2. This has important guiding significance for material design work in the field of NO conversion and strategies to fundamentally improve NO conversion activity and selectivity. Therefore, our work systematically summarizes the strategy of introducing adsorption and activation sites through microstructure control, and emphasizes the role of these sites in the photocatalytic NO conversion process. The aim is to clarify the influence of adsorption and activation sites on adsorption behavior and the correlation between these sites and reaction paths. Finally, the development trend and future prospects of increasing the level of g-C3N4 adsorption and activation in the field of photocatalytic NO conversion are introduced, which is expected to provide an important reference for the development and practical application of g-C3N4-based photocatalytic materials.

Key words: Photocatalysis, g-C3N4, NO conversion, Microstructure control, Adsorption, Activation