Citation: Yanyan Zhao, Jing Zhang, Xiaolong Li, Hailun Su, Lin Yang, Jianjun Zhang. TiO₂/Py-HOF S型异质结中的超快电荷转移用于高效光催化产H₂O₂及灭菌[J]. Acta Physico-Chimica Sinica, ;2026, 42(11): 100370. doi: 10.1016/j.actphy.2026.100370 shu

TiO₂/Py-HOF S型异质结中的超快电荷转移用于高效光催化产H₂O₂及灭菌

Yanyan Zhao ^1,, ,
Jing Zhang ¹ ,
Xiaolong Li ¹ ,
Hailun Su ¹ ,
Lin Yang ¹ ,
Jianjun Zhang ^2,,

1.
College of Modern Agriculture and Biological Engineering, Qinling Institute of Biological Resources, Shangluo University, Shangluo 726000, Shaanxi Province, China;
2.
Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430078, Hubei Province, China

Corresponding author: Yanyan Zhao, Jianjun Zhang,
Received Date: 25 June 2026
Revised Date: 15 July 2026
Accepted Date: 15 July 2026

氢键有机框架(HOFs)在光催化领域具有巨大的应用潜力。然而，其在光催化产H₂O₂及抗菌活性中的实际应用仍受限于固有的低效电子-空穴分离及结构稳定性不足。本研究以1,3,6,8-四(对苯甲酸)芘(H₄TBAPy)为前驱体，通过自组装法制备了Py-HOF光催化剂，并采用原位合成策略合理构建了二氧化钛/氢键有机框架(TiO₂/Py-HOF, T/Py-HOF)S型异质结。由于H₄TBAPy的强氢键和π-π相互作用，T/Py-HOF S型异质结展现出优异的稳定性。此外，原位光照光电子能谱(ISXPS)、飞秒瞬态吸收光谱(fs-TAS)及密度泛函理论计算(DFT)验证了T/Py-HOF异质结中的S型载流子迁移机制。得益于T/Py-HOF S型光催化剂的超快电荷转移和优异氧化还原能力，最优配比的T/Py-HOF-5%实现了1890 μmol g^-¹ h^-¹的显著H₂O₂产率，分别较纯TiO₂和裸Py-HOF提升约15.24倍和6.19倍，同时保持优异的稳定性。进一步地，T/Py-HOF异质结对大肠杆菌(E. coli)展现出卓越的光催化灭菌活性，在90 min光照后实现近100%的细菌灭活。综上，本研究为设计能源与环境应用中基于HOF的高效S型光催化剂提供了新见解。
- S-scheme,
- Hydrogen-bonded organic framework (HOF),
- Hydrogen peroxide,
- Photocatalytic sterilization,
- Femtosecond transient absorption spectroscopy
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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

TiO2/Py-HOF S型异质结中的超快电荷转移用于高效光催化产H2O2及灭菌

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通讯作者: 陈斌, bchen63@163.com

TiO₂/Py-HOF S型异质结中的超快电荷转移用于高效光催化产H₂O₂及灭菌