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Photocatalytic Degradation of Deoxynivalenol Using Cerium Doped Titanium Dioxide under Ultraviolet Light Irradiation

文献类型： 外文期刊

作者： He, Pengzhen 1 ; Zhao, Zhiyong 2 ; Tan, Yanglan 3 ; Hengchao, E. 2 ; Zuo, Minghui 1 ; Wang, Jianhua 2 ; Yang, Junhua 2 ;

作者机构： 1.Mu Danjiang Normal Univ, Coll Chem & Chem Engn, Mu Danjiang 157012, Peoples R China

2.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Shanghai 201403, Peoples R China

3.Chinese Acad Sci, Shanghai Inst Nutr & Hlth, CAS Key Lab Nutr Metab & Food Safety, Shanghai 200031, Peoples R China

关键词： deoxynivalenol; photocatalytic degradation; cerium doped titanium dioxide; mechanism; pathway

期刊名称：TOXINS （ 影响因子：4.546； 五年影响因子：4.8 ）

ISSN：

年卷期： 2021 年 13 卷 7 期

页码：

收录情况： SCI

摘要： Deoxynivalenol (DON) is a major mycotoxin with high toxicity that often contaminates grains, foods and feeds. The traditional approaches for DON removal are difficult to meet industry and agriculture demands due to the high stability of the DON molecule. Therefore, there is an urgent need to develop green and effective strategies for DON degradation. In this study, a batch of photocatalytic nanomaterials of cerium (Ce) doped titanium dioxide (TiO2) were successfully prepared by sol-gel method. The catalysts were systematically characterized by XRD, HRTEM, FT-IR, UV-Vis and XPS. The catalyst 0.5Ce-TiO2 showed superior photocatalytic activity for DON degradation in aqueous solution under ultraviolet light irradiation, better than that of traditional photocatalyst pure TiO2, and 96% DON with initial concentration of 5.0 mg/L could be degraded in 4 h. In addition, the two possible degradation intermediate products C5H8O3 and C17H18O6 were identified, the photocatalytic degradation mechanism and degradation pathway were studied. The results indicate that Ce doped TiO2 photocatalyst can be used to reduce DON effectively.

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