光催化
材料科学
磁场
化学工程
领域(数学)
化学
催化作用
有机化学
物理
数学
量子力学
纯数学
工程类
作者
Mengmeng Li,Fang Chen,Yong Jiang,Qin Cheng,Jiawei Xue,Cheng Shen,Yuxue Wei,Mengdie Cai,Jingshuai Chen,Song Sun
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2023-07-26
卷期号:6 (15): 14228-14235
标识
DOI:10.1021/acsanm.3c02153
摘要
The presence of hydroxyl (OH) groups on the photocatalyst surface is crucial for the volatile organic compounds’ (VOCs) degradation. However, there is still limited knowledge on how OH groups are formed and their role in the magnetic-field-dependent photocatalytic degradation process. In this work, magnetic-field-assisted photocatalytic degradation of toluene was built by taking magnetic semiconductor material ZnFe2O4 nanospheres as the photocatalyst. Through a combination of experimental techniques, in situ DRIFTS analysis, and DFT calculations, we discovered that applying a vertical magnetic field activated the OH groups on the surface of ZnFe2O4, leading to an increase in the adsorption capacity of toluene. Additionally, the magnetic-field-induced Lorentz force facilitated the conversion of toluene to benzaldehyde, a significant step in the degradation process. As the magnetic field intensity increased, the way in which toluene was adsorbed changed. Overall, our study provides a valuable view for the role of OH groups and the effect of magnetic fields in the VOCs’ photocatalytic degradation.
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