3D-flower-like porous neodymium molybdate nanostructure for trace level detection of organophosphorus pesticide in food samples

Muthusankar Ganesan; Ramadhass Keerthika Devi; Ai-Ho Liao; Kuo-Yu Lee; Gopu Gopalakrishnan; Ho-Chiao Chuang

doi:10.1016/j.foodchem.2022.133722

3D-flower-like porous neodymium molybdate nanostructure for trace level detection of organophosphorus pesticide in food samples

Food Chem. 2022 Dec 1:396:133722. doi: 10.1016/j.foodchem.2022.133722. Epub 2022 Jul 16.

Authors

Muthusankar Ganesan¹, Ramadhass Keerthika Devi², Ai-Ho Liao³, Kuo-Yu Lee⁴, Gopu Gopalakrishnan⁵, Ho-Chiao Chuang⁶

Affiliations

¹ Department of Mechanical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan, ROC; Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
² Department of Chemical Engineering and Biotechnology, College of Engineering, National Taipei University of Technology, Taipei 106, Taiwan, ROC.
³ Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan; Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan.
⁴ SV Probe Technology Taiwan, Co., Ltd., Zhubei, Taiwan.
⁵ Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
⁶ Department of Mechanical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan, ROC. Electronic address: hchuang@mail.ntut.edu.tw.

PMID: 35870247
DOI: 10.1016/j.foodchem.2022.133722

Abstract

Herein we report (i) designing of porous 3D flower-like neodymium molybdate nanosheets (pf-NdM NSs) and (ii) attaining reasonable selectivity towards methyl parathion (MP, organophosphate pesticide) in the presence of structurally comparable interferents. Herein the pf-NdM NSs as a catalyst for electrochemical detection of MP in food samples is reported for the first time. Because of porous morphology, and high surface area, the proposed catalyst offers a high electrocatalytic activity toward MP reduction. As a result, a low detection limit (5.7 nM), wide linear range (0.5 - 300 μM), and good sensitivity (1.88 µA µM^-1 cm^-2), with decent selectivity were achieved. Further, the real sample analysis in tomato juice, and paddy grains, yielded good recovery results, demonstrating the practicability of the proposed sensor. Overall, our study presents a method for designing a novel-nanostructured material for trace-level detection of pesticides that is simple to fabricate, and also delivers a good performance.

Keywords: 3D nanomaterial; Electrochemical sensor; Methyl parathion; Neodymium molybdate; Pesticide.

MeSH terms

Electrochemical Techniques / methods
Electrodes
Molybdenum
Nanostructures* / chemistry
Neodymium
Organophosphorus Compounds / analysis
Pesticides* / analysis
Porosity

Substances

Organophosphorus Compounds
Pesticides
molybdate
Neodymium
Molybdenum