Fluorescence Quenching Detection of Clothianidin in Fruit and Vegetable Samples Using MAPbBr3 Perovskite Quantum Dots

文献类型： 外文期刊

第一作者： Liu, Li

作者： Liu, Li;Peng, Maomin;Xia, Hong;Peng, Xitian;Peng, Lijun;Zhou, Youxiang;Liu, Li;Peng, Maomin;Xia, Hong;Peng, Xitian;Peng, Lijun;Zhou, Youxiang;Liu, Li;Zhang, Jin Z.;Xu, Ke

作者机构：

关键词： perovskite; quantum dots; clothianidin; fluorescence detection; neonicotinoids

期刊名称：ACS APPLIED NANO MATERIALS （ 影响因子：5.9； 五年影响因子：5.9 ）

ISSN：

年卷期： 2024 年 7 卷 8 期

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收录情况： SCI

摘要： Highly stable and photoluminescent methylammonium lead halide perovskite quantum dots (MAPbBr(3) PQDs) have been synthesized and applied for the fluorescence quenching detection of clothianidin in fruit and vegetable samples. Characterizations using different techniques, including photoluminescence (PL), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and time-resolved PL (TRPL), show that static quenching is the dominant fluorescence quenching mechanism of MAPbBr(3) PQDs with clothianidin. Hydrogen bonds or van der Waals forces play major roles in the MAPbBr(3) PQDs-clothianidin interaction. Under optimized conditions, the relative PL intensity of MAPbBr(3) PQDs is linear to the concentration of clothianidin in the 0.0 and 20.0 mg/L range with a detection limit of 0.17 mu g/kg. Excellent recoveries of 79.5-115.4% were acquired for radish and banana samples with a relative standard deviation below 9.4%. These results indicate that PQDs can be used for qualitative and quantitative identification of clothianidin, providing an effective detection method for risk prevention and control of neonicotinoid pesticide residues in agricultural products.

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