Rational Design and Interlayer Effect of Dysprosium-Stannate Nanoplatelets Incorporated Graphene Oxide: A Versatile and Competent Electrocatalyst for Toxic Carbamate Pesticide Detection in Vegetables

Abstract

In modern farming, pesticides are extensively used to deliver high-yield harvests with no concern about the amount of toxicity involved in the agriculture process. The continuous usage of pesticides also causes severe health issues for human health. Thus, promoting a rapid and accurate method for ultrasensitive and lowlevel detection of toxic pesticides is essential in real food samples to avoid serious health issues. Herein, we successfully synthesized graphene oxide (GO) incorporated with dysprosium stannate nanoplatelets (Dy 2 Sn 2 O 7 ) through a facile coprecipitation method followed by ultrasonication, which is used for the electrochemical detection of carbofuran (CF) in vegetable samples. The unique structural properties of Dy 2 Sn 2 O 7 /GO were successfully characterized by various analytical and spectroscopic techniques. The electrochemical impedance spectroscopy (EIS) measurements revealed overall elevated electrochemical behavior of the Dy 2 Sn 2 O 7 / GO composite. Additionally, the electrochemical performance of Dy 2 Sn 2 O 7 /GO analyzed by cyclic voltammetry (CV) showed superior electrocatalytic activity toward the detection of CF compared with bare and other composite electrodes due to fast electron transfer behavior and interlayer effect of Dy 2 Sn 2 O 7 NPs and GO. Furthermore, differential pulse voltammetry (DPV) analysis of Dy 2 Sn 2 O 7 /GO revealed the low-level detection limit of CF 14.8 nM with the linear concentration range of 0.05−124.65 μM and a sensitivity of 2.632 μA μM −1 cm −2 . Indeed, the real-time analysis of CF at Dy 2 Sn 2 O 7 /GO retained an adequate recovery level in vegetable samples that are desirable for practical applications and, thus, can generate the diminution of CF in the environmental contamination. Given the acceptable recovery level of CF, the Dy 2 Sn 2 O 7 /GO is a competent electrocatalyst for detecting toxic pesticides in real samples to avoid health issues.

Interfacial Superassembly of Mo2C@NiMn-LDH Frameworks for Electrochemical Monitoring of Carbendazim Fungicide

“…The degradation of CBZ is found to be persistent due to its longer half-life that reveals its presence in a wide range of products, and hence, accurate detection and quantification of CBZ is significant . Therefore, various analytical methods such as UV–visible spectroscopy, high-performance liquid chromatography, fluorescence spectroscopy, capillary electrophoresis, tandem mass spectroscopy, and solid-phase ion-exchange chromatography have been established, but due to their ineluctable shortcomings including long extraction time, complicated sample preparation, and high priced reagents and instruments which leads to an ideal alternative electrochemical approach because of its beneficial features like rapidity, selectivity, accuracy and low cost. − Thus, in electrochemical sensing, the electrode material and its structural morphology play a crucial role in the detection of CBZ. Screen-printed carbon electrodes (SPCEs) allow for the production of large quantities of carbon electrodes in a reproducible, low-cost, and disposable format.…”

Multiple Recognition-Based Sensor for Pesticide Residues

“…The optical sensor enabled selective parathion recognition and super-sensitive detection with a LOD of 1.950 ppb. Moreover, other nanomaterials like metal nanoplatelets can also be used to rapidly detect pesticides ( Thirumalraj et al, 2020 ).…”

Synergy of the LaVO4/h-BN Nanocomposite: A Highly Active Electrocatalyst for the Rapid Analysis of Carbendazim

“…3 Allergic dermatitis, reproductive dysfunction, hormone disruption, and mucous membrane inflammation are the major health threats associated with these compounds and, in addition, much of the carcinogenic risk of pesticides is attributable to fungicides. 4 Among a large number of fungicides, carbendazim (CZ) is a widely used broad-spectrum benzimidazole used throughout the world on economically relevant crops as pre-and postharvest treatment. Statistics indicate that the annual consumption of CZ in India is almost 1992 metric tons, which places it among the top five pesticides in terms of utilization and ranks second among the most consumed carbamates in the country.…”

“…The excessive and unreasonable use of fungicides affects all areas of the natural environment and contributes primarily to problems with residues; contamination of food, soil, and water; and growth of resistance in pathogens . Allergic dermatitis, reproductive dysfunction, hormone disruption, and mucous membrane inflammation are the major health threats associated with these compounds and, in addition, much of the carcinogenic risk of pesticides is attributable to fungicides . Among a large number of fungicides, carbendazim (CZ) is a widely used broad-spectrum benzimidazole used throughout the world on economically relevant crops as pre- and postharvest treatment.…”