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Organophosphorus insecticide fenamiphos (FEN) is utilized to control the detrimental nematode pests. In this report, a novel molecular imprinted electrochemical sensor for insecticide FEN detection was prepared. The molecular imprinted sensor was prepared based on Co₃O₄ nanowire and core-shell Co₃O₄@MOF-74 nanocomposite. Firstly, hydrothermal method followed by thermal annealing was applied for the preparation of Co₃O₄ nanowire. Then, solvothermal technique was used in no presence of metal salts to prepare core-shell Co₃O₄@MOF-74 nanocomposite. In addition, several solvothermal cycles were tried to optimally adjust the reaction efficiency. After the modification of the clean carbon electrode surfaces with Co₃O₄@MOF-74 nanocomposites, the molecular imprinted electrodes based on Co₃O₄@MOF-74 nanocomposites were prepared in presence of 100.0 mM pyrrole as monomer and 25.0 …