Insight into the boosted ZEN degradation over defective Bi2WO6 ultrathin layers: ROS-mediated mechanism and application in corn oil

被引：15

作者：

Yang, Xianglong ^{[1
]}

Cheng, Ling ^{[1
]}

Zhang, Qi ^{[1
,2
]}

Yu, Li ^{[1
]}

Qi, Xin ^{[1
]}

Mao, Jin ^{[1
,2
]}

Li, Peiwu ^{[1
,2
]}

机构：

[1] Chinese Acad Agr Sci, Oil Crops Res Inst, Qual Inspection & Test Ctr Oilseed Prod, Natl Reference Lab Agr Testing Biotoxin,Lab Qual &, Wuhan 430062, Peoples R China

[2] Hubei Hongshan Lab, Wuhan 430070, Peoples R China

来源：

FOOD CHEMISTRY | 2023年 / 405卷

基金：

中国国家自然科学基金;

关键词：

Zearalenone; Photocatalysis; Reactive oxygen species; Bi2WO6; ATOMIC LAYERS; CO2; REDUCTION; ZEARALENONE; FABRICATION; OXIDATION;

D O I：

10.1016/j.foodchem.2022.134895

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Establishing an effective and sustainable strategy for zearalenone (ZEN) degradation is of great significance to agricultural development and food safety. Herein, more than 98 % of ZEN (2 ppm) was photocatalytic degraded within 90 min over the oxygen-deficient Bi2WO6 ultrathin layers (BWO-U), along with the sharp elimination of biotoxicity to GES-1 cells. Theoretical calculations and characterizations revealed the ultrathin structure and oxygen vacancies endowed BWO-U with strengthened photoelectrochemical activity and O2-adsorption capacity, facilitating the generation of center dot O2- and 1O2 which play decisive roles in ZEN degradation. Furthermore, a possible mechanism was proposed based on nine intermediates identified via LC-MS, including the steps of cis-trans isomerization, oxidation and cleavage. Eventually, the method also exhibited immense potential in reducing ZEN-contamination in corn oil, and made no significant impact on the quality of corn oil. This work might provide a feasible strategy to mitigate ZEN-contamination and cast a new light on the ROS-mediated mechanism.

引用

页数：10

共 38 条

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