A methyl parathion electrochemical sensor based on Nano-TiO<sub>2</sub>, graphene composite film modified electrode

Song, Bin; Cao, Wenjie; Wang, Yazhen

doi:10.1080/1536383x.2016.1174696

Cited by 28 publications

(7 citation statements)

References 24 publications

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“…The detection limit is 0.5 nM. The important parameters of sensor, such as detection limit and linear range are compared with previously modified electrodes ( Table 1 ) 1 16 17 18 19 37 38 39 40 41 . The analytical performance of the Ag@GNRs/SPCE is competitive to the previously reported MP sensors.…”

Section: Resultsmentioning

confidence: 99%

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Govindasamy

Mani

Chen

et al. 2017

Sci Rep

161

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We have developed a sensitive electrochemical sensor for Organophosphorus pesticide methyl parathion (MP) using silver particles supported graphene nanoribbons (Ag@GNRs). The Ag@GNRs nanocomposite was prepared through facile wet chemical strategy and characterized by TEM, EDX, XRD, Raman, UV-visible, electrochemical and impedance spectroscopies. The Ag@GNRs film modified screen printed carbon electrode (SPCE) delivers excellent electrocatalytic ability to the reduction of MP. The Ag@GNRs/SPCE detects sub-nanomolar concentrations of MP with excellent selectivity. The synergic effects between special electrocatalytic ability of Ag and excellent physicochemical properties of GNRs (large surface area, high conductivity, high area-normalized edge-plane structures and abundant catalytic sites) make the composite highly suitable for MP sensing. Most importantly, the method is successfully demonstrated in vegetables and fruits which revealed its potential real-time applicability in food analysis.

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Section: Resultsmentioning

confidence: 99%

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Govindasamy

Mani

Chen

et al. 2017

Sci Rep

161

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“…The oxidation peak currents found from the LSV and DPV were 110.2 μA and 24.5 μA, respectively. A similar lower peak current were also observed by others . Hence, LSV method was used for further investigations…”

Section: Resultsmentioning

confidence: 99%

Roll‐to‐Roll printed PEDOT/PSS/GO Plastic Film for Electrochemical Determination of Carbofuran

et al. 2019

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In this work, we developed a roll‐to‐roll printed poly(3,4‐ethylenedioxythiophene)/polystyrene sulphoanate without graphene oxide (GO) (PEDOT/PSS) and with graphene oxide (PEDOT/PSS/GO) plastic films for the electrochemical determination of carbofuran. Both the PEDOT/PSS and PEDOT/PSS/GO plastic films showed electroactivity towards the oxidation of carbofuran. Incorporation of graphene oxide (GO) improves the electrochemical activity of carbofuran and increased its sensitivity. The printed plastic films were characterized by cyclic voltammetry (CV), linear sweep voltammetry (LSV), surface profilometer, four point probe and atomic force microscopy (AFM). The effects of pH, deposition time, deposition potential and film thickness on the oxidation peak current of carbofuran were investigated. Under the optimized conditions, a dynamic linear range of 1 μM–90 μM with a detection limit of 1.0×10−7 M (S/N=3) were obtained. The printed PEDOT/PSS/GO plastic electrode was applied for the determination of carbofuran in vegetable and fruit samples with recoveries between 94.4 and 101.8 %.

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“…MP is an active organic molecule consisting of nitrogen, phosphorous, and sulfur groups which are toxic and hence fight against insects. Several methods have been devoted to the sensitive detection of MP − and degradation of MP. , Still, there is a need for a material that possesses sensitivity, covers a wide linear range, has enhanced degradation efficiency, has a simple fabrication method, and so forth. The combination of FeV and RGO through DES-mediated solvothermal method has not been explored.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of FeVO₄/RGO Nanocomposite: An Amperometric Probe for Sensitive Detection of Methyl Parathion in Green Beans and Solar Light-Induced Degradation

Alsulami

Kumarswamy

Prashanth³

et al. 2022

ACS Omega

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Pesticide usage is one of the significant issues in modern agricultural practices; hence, monitoring pesticide content and its degradation is of utmost importance. A novel and simple one-pot deep eutectic solvent-based solvothermal method has been developed for the synthesis of FeVO4/reduced graphene oxide (FeV/RGO) nanocomposite. The band gap of FeV decreased upon anchoring with RGO. Enhanced activity in the detection and photocatalytic degradation has been achieved in the FeV/RGO nanocomposite compared to pure FeV and RGO. FeV/RGO was used to modify glassy carbon electrode (GCE), and the fabricated electrode was evaluated for its electrochemical detection of methyl parathion (MP). The amperometric technique was found to be more sensitive with a 0.001–260 μM (two linear ranges; 0.001–20 and 25–260 μM) wide linear range and low limit of detection value (0.70 nM). The practical applicability of modified GCE is more selective and sensitive to real samples like river water and green beans. Photocatalytic degradation of MP has been examined using FeV, RGO, and FeV/RGO nanocomposite. FeV/RGO managed to degrade 95% of MP under solar light in 80 min. Degradation parameters were optimized carefully to attain maximum efficiency. Degradation intermediates were identified using liquid chromatography–mass spectrometry analysis. The degradation mechanism has been studied in detail. FeV/RGO could serve as a material of choice in the field of electrochemical sensors as well as heterogeneous catalysis toward environmental remediation.

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A methyl parathion electrochemical sensor based on Nano-TiO₂, graphene composite film modified electrode

Cited by 28 publications

References 24 publications

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Roll‐to‐Roll printed PEDOT/PSS/GO Plastic Film for Electrochemical Determination of Carbofuran

Fabrication of FeVO₄/RGO Nanocomposite: An Amperometric Probe for Sensitive Detection of Methyl Parathion in Green Beans and Solar Light-Induced Degradation

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A methyl parathion electrochemical sensor based on Nano-TiO2, graphene composite film modified electrode

Cited by 28 publications

References 24 publications

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Methyl parathion detection in vegetables and fruits using silver@graphene nanoribbons nanocomposite modified screen printed electrode

Roll‐to‐Roll printed PEDOT/PSS/GO Plastic Film for Electrochemical Determination of Carbofuran

Fabrication of FeVO4/RGO Nanocomposite: An Amperometric Probe for Sensitive Detection of Methyl Parathion in Green Beans and Solar Light-Induced Degradation

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Product

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A methyl parathion electrochemical sensor based on Nano-TiO₂, graphene composite film modified electrode

Fabrication of FeVO₄/RGO Nanocomposite: An Amperometric Probe for Sensitive Detection of Methyl Parathion in Green Beans and Solar Light-Induced Degradation