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Abstract
Establishing a fast and simple method for determining glyphosate (Glyp) is crucial for safeguarding the environment and protecting human well-being. In this work, a copper benzenedicarboxylate (CuBDC) metal-organic frameworks (MOFs) with peroxidase-like property and stimulus-responsive fluorescent was prepared by binding Cu2+ with terephthalic acid (TA). The presence of Glyp can coordination with Cu2+ ion and block the peroxidase-like properties of CuBDC, thereby suppressing the catalysis the oxidation of TA into fluorescent product 2-hydroxyterephthalic acid (HTA). Based on these facts, a simple, rapid and sensitive fluorescence detection strategy for Glyp was developed. The fluorescence decreases linearly in the 0.5-10µg/mL Glyp concentration range, and the limit of detection was calculated to be 23.99 ng/mL. Furthermore, the dual-functional CuMOFs-based label-free strategy was effectively employed for detecting Glyp in river water samples. With good performance and practicability, this strategy provides a potential application in the convenient and reliable determination of Glyp in the environment.
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