催化学报

催化学报 ›› 2027, Vol. 92: 37-64.DOI: 10.1016/S1872-2067(26)65252-7

• 综述 • 上一篇    下一篇

g-C3N4基S-型异质结光催化剂的研究进展

汪施柯a,1, 郎曼a,1, 王锋b,*, 夏鹏飞a,*, 张蝶青a,*   

  1. a上海师范大学化学与材料科学学院, 上海市稀土功能材料重点实验室, 教育部资源化学重点实验室, 教育部资源化学国际联合实验室, 上海 200234, 中国;
    b林雪平大学物理化学生物系, 林雪平 58183, 瑞典
  • 收稿日期:2026-08-11 接受日期:2026-08-21 出版日期:2027-01-18 发布日期:2026-10-30
  • 通讯作者: *电子信箱: dqzhang@shnu.edu.cn (张蝶青),forsky@shnu.edu.cn (夏鹏飞),feng.wang@liu.se (王锋).
  • 作者简介:1共同第一作者.
  • 基金资助:
    国家自然科学基金项目(22376142, 22305157, 22022608, 22176127); 上海市东方学者计划领军项目(LJ2024115); 上海市绿色能源化工工程技术研究中心项目(18DZ2254200); 光化学与能源材料“111”创新引智基地项目(D18020).

Recent advances in g-C3N4-based S-scheme photocatalyst

Shike Wanga,1, Man Langa,1, Feng Wangb,*, Pengfei Xiaa,*, Dieqing Zhanga,*   

  1. aThe Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Shanghai Key; Laboratory of Rare Earth Functional Materials, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China;
    bElectronics and Photonics Materials, Department of Physics, Chemistry, and Biology (IFM), Linkö ping University, Linkö ping 58183, Sweden
  • Received:2026-08-11 Accepted:2026-08-21 Online:2027-01-18 Published:2026-10-30
  • Contact: *E-mail: dqzhang@shnu.edu.cn (D. Zhang), forsky@shnu.edu.cn (P. Xia), feng.wang@liu.se (F. Wang).
  • About author:Pengfei Xia (College of Chemistry and Materials Science, Shanghai Normal University) holds a Ph.D. degree and is currently engaged in teaching and research at Shanghai Normal University. Prior to joining Shanghai Normal University, He worked at the University of Electronic Science and Technology of China. His research mainly focuses on semiconductor photocatalysis and solar-energy conversion, particularly photocatalytic H₂ evolution and CO₂ conversion, with emphasis on the design of heterojunction photocatalysts, regulation of interfacial charge transfer, and elucidation of photocatalytic reaction mechanisms. He has led research projects supported by the National Natural Science Foundation of China, the National Postdoctoral Program for Innovative Talents, and the China Postdoctoral Science Foundation. His research has been published in leading journals including Advanced Materials, Angewandte Chemie International Edition, Advanced Functional Materials, and Nanoscale. His recent work focuses on regulating interfacial electronic structures and charge-transfer pathways to improve the efficiency and selectivity of photocatalytic energy conversion.； Feng Wang received his PhD from The Chinese University of Hong Kong. Since 2023, he has been an Associate Professor in the Department of Physics, Chemistry and Biology at Linköping University, Sweden. He has previously been awarded a VINNMER Fellowship (Sweden, 2017), a Marie Skłodowska-Curie Fellowship (European Commission, 2018), and an Åforsk Entrepreneurship Scholarship (Sweden, 2023). His research has been supported by funding from the Swedish Research Council, STINT, the Formas Network Grant, Olle Engkvists Stiftelse, Carl Tryggers Stiftelse, and the Swedish Government Strategic Research Area in Materials Science at Linköping University. His research interests focus on developing novel materials for sustainable energy technologies, particularly solar cells and photocatalytic hydrogen production through water splitting. Feng Wang has co-authored more than 100 peer-reviewed publications in high-impact journals, which have received over 11,000 citations with an h-index of 49.； Dieqing Zhang (College of Chemistry and Materials Science, Shanghai Normal University) received her Ph.D. degree from The Chinese University of Hong Kong. She has been awarded the National Science Fund for Excellent Young Scholars and the Shanghai Eastern Talent Leading Project, and has received multiple honors, including the March 8th Red-Banner Pacesetter of the Shanghai Education System, Shanghai Young Top Talent, the Pujiang Talent Program, Shuguang Scholar, and Young Science and Technology Rising Star. Her research focuses on environmental chemistry and atmospheric pollution control chemistry, with particular emphasis on the deep purification and resource utilization of nitrogen oxide pollutants. Her work centers on the precise design of catalysts and the elucidation of conversion mechanisms, providing fundamental and applied support for the development of self-purifying and intelligent cities in alignment with the “Beautiful China” initiative. She has published more than 100 SCI-indexed papers as first or corresponding author in leading journals, including Nature Communications, Journal of the American Chemical Society, Angewandte Chemie International Edition, Advanced Materials, Advanced Energy Materials, Advanced Functional Materials, and Environmental Science & Technology. She serves as an Editorial Board Member in the field of Environmental Chemistry for Chinese Chemical Letters. As a key contributor, she has received several major awards, including the First Prize of the “Industry-University-Research Cooperative Innovation Achievement Award” from the China Association for Promoting Industrial-University-Research Cooperation, the First and Second Prizes of the Shanghai Natural Science Award, and the Third Prize of the Shanghai Science and Technology Progress Award.1 Contributed equally to this work.
  • Supported by:
    National Natural Science Foundation of China (22376142, 22305157, 22022608, 22176127), the Shanghai Eastern Talent Plan Leading Project (LJ2024115), the Shanghai Engineering Research Center of Green Energy Chemical Engineering (18DZ2254200), and the “111” Innovation and Talent Recruitment Base on Photochemical and Energy Materials (D18020).

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摘要： 石墨相氮化碳(g-C3N4)是一种非金属二维共轭聚合物光催化剂, 具有较负的导带位置、较高的费米能级、制备简便和结构可调等特点. 随着对半导体异质界面电荷迁移认识的不断深入, 异质结电荷转移模型由Ⅱ型异质结、各类Z‑型异质结逐步发展至S‑型异质结. S‑型异质结依靠费米能级平衡、界面电荷重排、能带弯曲与内建电场协同调控载流子迁移, 在实现光生载流子高效分离的同时保留光生载流子较强的氧化还原能力. 凭借其能带结构和界面特性, g-C3N4已成为构筑S-型异质结的重要还原型光催化剂(RP).
本文系统梳理了异质结电荷迁移模型的发展过程, 并重点讨论了S-型异质结的界面半导体物理机制. 两种半导体接触后, 费米能级差驱动界面电子重新分布, 形成能带弯曲和内建电场; 光照条件下, 低能载流子在界面选择性复合, 而RP侧还原能力较强的电子和氧化型光催化剂(OP)侧氧化能力较强的空穴得以保留. 针对S-型电荷迁移路径的判定, 本文总结了密度泛函理论计算、开尔文探针力显微镜、原位X-射线光电子能谱、飞秒瞬态吸收光谱和电子顺磁共振等方法, 从界面电荷重排、表面电势、载流子迁移与动力学以及活性物种等方面进行相互验证. 在此基础上, 从热力学能带结构、界面电荷调控、层状结构匹配和表面修饰灵活性等方面分析了g-C3N4作为RP的特点. 进一步总结了g-C3N4基S-型光催化剂在析氢、H2O2生成、CO2光还原、细菌灭活和有机污染物降解等反应中的研究进展, 并结合不同反应需求归纳了维度匹配、活性位点调控、同质结构筑和双功能氧化还原耦合等结构优化策略. 最后, 讨论了当前研究在原位动态机理解析、异质界面微环境调控、面向不同反应的构效关系、长期稳定性及规模化制备等方面仍需解决的问题.
在未来, 应加强原位和时间分辨表征与理论计算的结合, 进一步认识实际反应条件下的界面电荷迁移过程, 并根据不同反应需求开展界面和活性位点调控. 本综述可为理解g-C3N4在S-型异质结中的作用及相关光催化体系的设计提供参考.

关键词: 光催化, 石墨相氮化碳, S-型异质结, 电荷迁移, 环境应用

Abstract: Benefiting from Fermi level equilibration, interfacial band bending, and built-in electric fields, S-scheme heterostructures achieve efficient interfacial charge separation while preserving the robust redox capability of photogenerated charge carriers. This review systematically clarifies the evolutionary logic of heterojunction charge transfer models, spanning from conventional type-II and diverse Z-scheme configurations to advanced S-scheme heterostructures, and elaborates the core interfacial semiconductor physics governing S-scheme systems. A comprehensive overview is provided on the experimental characterization and theoretical verification techniques for identifying S-scheme charge transfer pathways, including density functional theory simulations, Kelvin probe force microscopy, in-situ X-ray photoelectron spectroscopy, femtosecond transient absorption spectroscopy, and electron paramagnetic resonance. On this basis, the unique superiority of graphitic carbon nitride (g-C3N4) as a reduction photocatalyst (RP) in S-scheme systems is thoroughly analyzed from the perspectives of thermodynamic band structure, interfacial charge redistribution, layered structural compatibility, and flexible surface modification. Furthermore, this paper summarizes the state-of-the-art advances of g-C3N4-based S-scheme photocatalysts for typical catalytic reactions, including photocatalytic H2 evolution, H2O2 production, photoreductive CO2 conversion, bacterial disinfection, and organic pollutant degradation. Corresponding reaction-oriented structural optimization strategies are also categorized and discussed, involving dimensional matching engineering, active site regulation, homojunction construction, and bifunctional redox coupling design. Finally, the key bottlenecks that restrict the practical application of g-C3N4-based S-scheme photocatalysts are highlighted.

Key words: Photocatalysis, g-C3N4, S-scheme heterojunction, Structure-activity relationship, Applications