ACS Applied Materials & Interfaces · 2019 · 150 citations · 56 references
Natural SciencesChemistryEnvironmental SciencesBiosensorsOrganic ChemistrySensorsChemical SensorsPesticide ChemistryPesticide Residue AnalysisPesticide ResiduesSensor MaterialsSensor-based AnalysisAnalytical Detection Of Organic PollutantsLuminescent Metal-organic FrameworksLuminescent SensorsMetal-organic Framework SensorsOrganophosphorus Pesticide ResiduesOrganophosphorus PesticidesPesticide DetectionPesticide Residues In Water
Metal–organic frameworks (MOFs) have shown considerable prospects for sensing pesticide residues. However, the low stability of MOFs in water hinders them from testing food and environmental samples. Herein, we report an easy and cost-efficient synthesis of a water-stable zirconium luminescent MOF (Zr-LMOF) and its application for rapid, sensitive, and in situ detection of organophosphorous pesticides (OPPs). The Zr-MOF is prepared using Zr(IV) and 1,2,4,5-tetrakis(4-carboxyphenyl)benzene. The synthesized Zr-LMOF rapidly absorbs trace amounts of OPP parathion-methyl and indicates its presence. A low limit of detection of 0.115 μg kg–1 (0.438 nM) with a wide linear range from 70 μg kg–1 to 5.0 mg kg–1 was achieved. Satisfactory recoveries ranging from 78% to 107% were obtained for spiked food and environmental samples. Further, the Zr-LMOF was applied to imitate rapid and in situ imaging detection of pesticide residue on fresh produce nondestructively; visual signals appeared under ultraviolet light within 5 min. These results suggest that the Zr-LMOF has the potential for low-cost, rapid, and in situ imaging detection of OPPs contamination via easy-to-read visual signal.
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Destruction of chemical warfare agents using metal–organic frameworks
Joseph E. Mondloch, Michael J. Katz, William C. Isley et al. · Nature Materials · 2015 · 954 citations