Perspective Accelerated photodegradation of T-2 toxin over magnetic recyclable ZnO/ CaFe 2 O 4 nanocomposite with a p-n based Z-scheme heterojunction architecture
文献类型： 外文期刊
作者： Huang, Qingwen 1 ; Lou, Xiuping 1 ; Nie, Dongxia 1 ; Zhao, Zhihui 1 ; Fan, Kai 1 ; Guo, Wenbo 1 ; Meng, Jiajia 1 ; Liu, Zheyuan 3 ; Han, Zheng 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, 1000 Jinqi Rd, Shanghai 201403, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China
3.Fuzhou Univ, Coll Mat Sci & Engn, Fuzhou 350108, Fujian, Peoples R China
关键词： T-2 toxin; Photocatalytic degradation; Z-scheme; p-n heterojunction
期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：8.6； 五年影响因子：7.8 ）
ISSN： 1383-5866
年卷期： 2024 年 347 卷
页码：
收录情况： SCI
摘要： T-2 toxin (T-2), one of the most toxic mycotoxins, has drawn extensive attention due to its universality and persistence in food and the environment. In this study, a novel magnetic ZnO/CaFe2O4 nanocomposite with a p-n based Z-scheme heterojunction was successfully constructed by a hydrothermal method for efficient photodegradation of T-2 toxin. The optimal cubic structure of ZnO/CaFe2O4 endows it with excellent photocatalytic efficiency in removing T-2 toxin, such that near-total degradation was achieved with an exceptionally high mineralization value (64 %) after 180 min of UV radiation. This efficacy was attributed not only to the abundant reaction sites on the binary composites, but also its Z-scheme heterojunction promoting the electron-hole (e--h+) separation and hence favors redox processes. The center dot OH played a major role in the photodegradation, and the decomposition pathway of T-2 was proposed based on the results of UHPLC-Q-TOF-MS/MS data and density functional theory (DFT) calculations. This work provided a green approach for removing the refractory natural pollutants.
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