Molecules · 2022 · 22 citations · 41 references
Natural SciencesMaterials EngineeringMaterials ScienceElectrochemistryNanomaterialsSensorsElectroanalytical ChemistryElectrochemical BiosensorsElectrochemical DetectionElectrochemical SensorsElectrode MaterialsGraphene NanomaterialsActive SitesConductivityElectrocatalytic NanomaterialsElectrocatalytic Surface ReactionsElectrochemical SensingGraphene-based ElectrodesReduced Graphene OxideSurface Area
In this work, a two-dimensional leaf-like framework-L embedded electrochemically reduced graphene oxide (ERGO@ZIF-L) was proposed as an outstanding electrode material for the sensitive electrochemical sensing of benomyl (BM). ZIF-L is surrounded by ERGO, which could effectively ensure the stability and dispersion of ZIF-L. With this unique combination, the prepared ERGO@ZIF-L displayed excellent synergistic characteristics with a large surface area, excellent conductivity, plentiful active sites, and high electrocatalytic properties, thus endowing it with high sensitivity for BM determination. The experimental parameters, such as solution pH, material volume, and accumulation time, were optimized. Under optimal conditions, the BM sensor showed a wide linear range (0.009-10.0 μM) and low-limit detection (3.0 nM). Moreover, the sensor displayed excellent stability, repeatability, and reproducibility, and good anti-interference capability. The method was successfully applied to detect BM in real-world samples.
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