Unraveling the active site in poly(heptazine imide) for photocatalytic H2O2 production and its stabilization strategy

被引：0
|
作者：
Zhang, Pan [1 ]
Li, Junlin [1 ,2 ]
Sun, Wenming [1 ]
Zhou, Chao [2 ]
Meng, Xiangfu [1 ]
机构：
[1] Capital Normal Univ, Dept Chem, Beijing 100048, Peoples R China
[2] Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
来源：
MATERIALS LETTERS | 2025年 / 382卷
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Poly(heptazine imide); Photocatalysis; Hydrogen peroxide; Active sites; Stability; CARBON NITRIDE;
D O I：
10.1016/j.matlet.2024.137954
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, bridging imide site (K-NC2) instead of cyanamide groups (N-C---N) was found to be the key site for highly photoactive H2O2 production. The protonation of K-NC2 is proved to be the main reason for the deterioration of photoactivity upon long-term irradiation. A novel stabilization strategy using KCl solution as protective agent was developed to improve the stability of PHI for photocatalytic H2O2 production, leading to a 4fold increase in H2O2 production rate during 8 h of irradiation.
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页数：4
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