A novel detection method for organophosphorus insecticide fenamiphos: Molecularly imprinted electrochemical sensor based on core-shell Co3O4@MOF-74 nanocomposite

Hassan Karimi-Maleh; Mehmet Lütfi Yola; Necip Atar; Yasin Orooji; Fatemeh Karimi; P Senthil Kumar; Jalal Rouhi; Mehdi Baghayeri

doi:10.1016/j.jcis.2021.02.066

A novel detection method for organophosphorus insecticide fenamiphos: Molecularly imprinted electrochemical sensor based on core-shell Co₃O₄@MOF-74 nanocomposite

J Colloid Interface Sci. 2021 Jun 15:592:174-185. doi: 10.1016/j.jcis.2021.02.066. Epub 2021 Feb 25.

Authors

Hassan Karimi-Maleh¹, Mehmet Lütfi Yola², Necip Atar³, Yasin Orooji⁴, Fatemeh Karimi⁵, P Senthil Kumar⁶, Jalal Rouhi⁷, Mehdi Baghayeri⁸

Affiliations

¹ School of Resources and Enviroment, University of Electronic Science and Technology of China, P.O. Box 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Engineering, Quchan University of Technology, Quchan 9477177870, Iran; Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, 2028 Johannesburg, P.O. Box 17011, South Africa. Electronic address: h.karimi.maleh@gmail.com.
² Hasan Kalyoncu University, Faculty of Health Sciences, Department of Nutrition and Dietetics, Gaziantep, Turkey. Electronic address: mlutfi.yola@hku.edu.tr.
³ Pamukkale University, Faculty of Engineering, Department of Chemical Engineering, Denizli, Turkey.
⁴ College of Materials Science and Engineering, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, PR China. Electronic address: yasin@njfu.edu.cn.
⁵ Department of Chemical Engineering, Quchan University of Technology, Quchan 9477177870, Iran.
⁶ Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai 603110, India.
⁷ Department of Physics, Shahid Beheshti University, G.C., Evin, Tehran 19839, Iran.
⁸ Department of Chemistry, Faculty of Science, Hakim Sabzevari University, P.O. Box 397, Sabzevar, Iran.

PMID: 33662823
DOI: 10.1016/j.jcis.2021.02.066

Abstract

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 mM FEN as analyte molecule between +0.30 V and +1.50 V by cyclic voltammetry (CV). The prepared molecularly imprinted sensor based on Co₃O₄ nanowire and core-shell Co₃O₄@MOF-74 nanocomposite was characterized by transmission electron microscopy (TEM), scanning electron microscope (SEM), x-ray diffraction (XRD) method, x-ray photoelectron spectroscopy (XPS), fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS) and CV. The quantification limit (LOQ) and the detection limit (LOD) were obtained as 1.0 × 10^-11 M and 3.0 × 10^-12 M, respectively, by using the developed sensor. Hence, the developed molecularly imprinting electrochemical sensor having high selectivity, stability and reproducibility was presented in this study for insecticide FEN detection.

Keywords: Co(3)O(4) nanowire; Fenamiphos; MOF; Molecularly imprinting; Voltammetry.