Citation: Chongbei Wu, Feihong Chu, Pengfei Kong, Yuanxin Dong, Gege Wang, Lefan Wang, Haitao Li, Meixin Zhang, Lifang Feng, Xuan Li, Jizhou Jiang. 二面角工程调控四嗪COFs层间作用强化电荷转移促进光合成H₂O₂[J]. Acta Physico-Chimica Sinica, ;2026, 42(11): 100385. doi: 10.1016/j.actphy.2026.100385 shu

二面角工程调控四嗪COFs层间作用强化电荷转移促进光合成H₂O₂

1.
Hebei Center for Industrial Energy-Saving and Pollution Control Research, Hebei Key Laboratory of Man-Machine Environmental Thermal Control Technology and Equipment, Hebei Vocational University of Technology and Engineering, Xingtai 054000, Hebei Province, China;
2.
School of Materials Science and Engineering, State Key Laboratory of Green and Efficient Development of Phosphorus Resources, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Novel Catalytic Materials of Hubei Engineering Research Center, Wuhan Institute of Technology, Wuhan 430205, Hubei Province, China;
3.
FTSCI Institute of Industrial Technology for Advanced Chemical and New Materials, Wuhan 430080, Hubei Province, China

Corresponding author: Jizhou Jiang, 027wit@163.com
Received Date: 29 June 2026
Revised Date: 9 August 2026
Accepted Date: 9 August 2026

共价有机框架(COFs)在太阳能驱动过氧化氢(H₂O₂)光合作用中展现出潜力，但受限于层间电荷传输效率低下。本研究通过空间位阻产生的非共价相互作用，逐步用氮原子替代三苯基芳烃平台中心芳环上的交替碳原子，从而设计并合成了一系列基于四嗪的COFs (Tz-COF-N_x)。结果表明，随着COFs骨架中氮原子数量的增加，相邻芳环之间的二面角逐渐减小。增强的层间π-π相互作用缩短了层间电子迁移距离，并显著提高了光生电荷载流子的分离和迁移效率。层间电子转移数遵循以下趋势：Tz-COF-N₃ (0.021 e^-) > Tz-COF-N₂ (0.011 e^-) > Tz-COF-N₁ (0.006 e^-) > Tz-COF-N₀ (0.001 e^-)。因此，Tz-COF-N₃在纯水中实现了6316.4 μmol g^-1 h^-1的光催化H₂O₂产率，是苯-四嗪COF (Tz-COF-N₀)的5.3倍。本研究通过调节空间构型以优化层间相互作用并促进层间电荷传输，为设计高效的COF基光催化剂提供了一种可行策略。
- Covalent organic frameworks,
- Photocatalytic H₂O₂ production,
- Interlayer electron transfer,
- Dihedral angle
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

二面角工程调控四嗪COFs层间作用强化电荷转移促进光合成H2O2

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通讯作者: 陈斌, bchen63@163.com

二面角工程调控四嗪COFs层间作用强化电荷转移促进光合成H₂O₂