Microwave-Enabled Fast Preparation of a Metal-Organic Framework Hybrid Membrane for Filtration-Enhanced Simultaneous Separation and Detection of Aflatoxin B1

文献类型： 外文期刊

第一作者： Ma, Tongtong

作者： Ma, Tongtong;Zhang, Qi;Yuan, Lei;Li, Zhishang;Zhang, Lin;Zhang, Jie;Yan, Shugang;Ying, Yibin;Fu, Yingchun;Xu, Xiahong

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关键词： metal-organic framework; hybrid membrane; fluorescence sensor; filtration; mycotoxins

期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：9.5； 五年影响因子：9.6 ）

ISSN： 1944-8244

年卷期： 2024 年 16 卷 19 期

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收录情况： SCI

摘要： Mycotoxin contamination in food and the environment seriously harms human health. Sensitive and timely detection of mycotoxins is crucial. Here, we report a dual-functional hybrid membrane with absorptivity and responsiveness for fluorescent-quantitative detection of mycotoxin aflatoxin B1 (AFB1). A biomineralization-inspired and microwave-accelerated fabrication method was established to prepare a hybrid membrane with a metal-organic framework (MOF) loaded in high density. The MOF presented high efficiency in capturing AFB1 and showed fluorescence intensity alteration simultaneously, enabling a dual adsorption-response mode. Deriving from the inherent porous structure of the hybrid membrane and the absorptive/responsive ability of the loaded MOF, a filtration-enhanced detection mode was elaborated to provide a 1.67-fold signal increase compared with the conventional soaking method. Therefore, the hybrid membrane exhibited a rapid response time of 10 min and a low detection limit of 0.757 ng mL(-1), superior to most analogues in rapidity and sensitivity. The hybrid membrane also presented superior specificity, reproducibility, and anti-interference ability and even performed well in extreme environments such as strong acid or alkaline, satisfying the practical requirements for facile and in-field detection. Therefore, the membrane had strong applicability in chicken feed samples, with a detection recovery between 70.6% and 101%. The hybrid membrane should have significant prospects in the rapid and in-field inspection of mycotoxins for agriculture and food.

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