A highly efficient metal oxide incorporated metal organic framework [Nd2O3-MIL(Fe)-88A] for the electrochemical detection of dichlorvos

Mariyammal Narayanan; Narendra Pal Singh Chauhan; Panneerselvam Perumal

doi:10.1039/d2ra07877e

A highly efficient metal oxide incorporated metal organic framework [Nd₂O₃-MIL(Fe)-88A] for the electrochemical detection of dichlorvos

RSC Adv. 2023 Feb 14;13(8):5565-5575. doi: 10.1039/d2ra07877e. eCollection 2023 Feb 6.

Authors

Mariyammal Narayanan¹, Narendra Pal Singh Chauhan², Panneerselvam Perumal¹

Affiliations

¹ Department of Chemistry, SRM Institute of Science and Technology Kattankulathur 603 203 Tamil Nadu India panneerp1@srmist.edu.in panneerchem82@gmail.com +91 9688538842.
² Department of Chemistry, Faculty of Science, Bhupal Nobles University Udaipur 313002 Rajasthan India.

Abstract

In this study, a Nd₂O₃@MIL(Fe)-88A composite was prepared through a hydrothermal method and used to detect dichlorvos. The XRD result demonstrated that the prepared sensor is highly crystalline in nature. The affinity of metal oxide and MIL(Fe)-88A could be utilised to overcome low stability and sensitivity owing to their synergistic and electronic effects. Differential pulse voltammetry (DPV) exhibits the electrocatalytic behaviour of Nd₂O₃@MIL(Fe)-88A; it functions at a lower potential at -0.5 to 0.8 V and has a wide linear range of 1-250 nM. It shows a very low detection limit of 0.92 nM with good sensitivity (4.42 mA nM^-1) and selectivity. The developed Nd₂O₃@MIL(Fe)-88A sensor was successfully applied to detect dichlorvos in real analysis. The recovery range calculated for cabbage and orange extracts was 96-97% and 99.5-103.4%, respectively, and RSD% calculated for cabbage and orange extracts was from 1.40 to 3.39% and from 0.64 to 2.26%, respectively.