Molecular Imprinted Sensor Including Au Nanoparticles/Polyoxometalate/Two-Dimensional Hexagonal Boron Nitride Nanocomposite for Diazinon Recognition
Hilal Medetalibeyoğlu, Murat Beytur, Sevda Manap, Ceren Karaman, Faruk Kardaş, Onur Akyıldırım, Gül Kotan, Haydar Yüksek, Necip Atar, Mehmet Lütfi Yola
Abstract
Diazinon [O,O-diethyl O-(2-isopropyl-6-methylpyrimidin4-yl) thiophosphate] (DIA) is a significant organophosphorus insecticide in agricultural applications. Thus, sensitive analytical methods development is important for a healthy lifestyle. In this work, the electrochemical detection of DIA molecule in fruit juice samples by using gold nanoparticles (AuNPs) incorporated polyoxometalate (POM)/two-dimensional hexagonal boron nitride (2D-hBN) nanosheets and molecularly imprinted polymer (MIP) was reported. To characterize as-prepared nanomaterials scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray analysis (EDX) techniques were performed. The electrochemical behavior of the electrodes was examined by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). The as-fabricated DIA imprinted electrode displayed a wide linear range and highly sensitive response to DIA. Moreover, the detection limit (LOD) found to be 3.0 × 10 −12 M. The modified sensor.was successfully used for recognition of DIA in fruit juices.