Performance and caracterization a new electrochemical sensor based on Fe3O4/MWCNT-O to detection Metribuzin Herbicide

Modifield electrodes can be used to improve some quality, like surface area, selectivity, or sensibility. In this context herer we propose a new sensor constructed of graphite powder and magnetic nanoparticles supported in oxided carbon nanotubes to used as sensor for pesticides determination. Our material werer characterized by FT-IR, TGA, BET, the morphology were analyzed by TEM and SEM. The electrochemical response towards standard probe potassium iron cyanide were analyzed using cyclic voltammetry and Electrochemical impedance spectroscope this techniques give us electrochemical active surface area, towards carbon paste electrode, our new propose sensor show a better signal. Athwart electrochemical impedance spectroscope were maked adjust to circuit and we calculate heterogeneous Kinect constant.