Conducting polymer and multi-walled carbon nanotubes nanocomposites based amperometric biosensor for detection of organophosphate

Kaur, Navpreet; Thakur, Himkusha; Prabhakar, Nirmal

doi:10.1016/j.jelechem.2016.05.037

Cited by 55 publications

(15 citation statements)

References 37 publications

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“…From these results it was possible to observe that the developed platform presented a good performance for the electrochemical detection of the pesticide in terms of reproducibility, once the relative standard deviation (RSD) for a given electrode was 1.4%, which value increased to 2.0% when three identical electrodes were used. The developed electrochemical sensor presented similar or even better performance for detecting malathion compared to other results reported in the literature, as displayed in table 1 [7,[35][36][37].…”

Section: Electrochemical Detection Of Malathionsupporting

confidence: 63%

Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Migliorini

Sanfelice

Mercante

et al. 2019

Mater. Res. Express

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An electrochemical sensor based on polymeric electrospun nanofibers of polyamide 6 (PA6)/ polypyrrole (PPy) surface-modified with two forms of graphene was developed for the detection of malathion, an organophosphorus pesticide. The materials were chosen considering the electrospun nanofibers possess large surface area and porosity, while reduced graphene oxide has remarkable electrical conductivity, which is a good strategy to increase sensor sensitivity and improve the limit of detection towards the pesticide. The surface modification of nanofibers with graphene was carried out using chemically (CRGO) and electrochemically reduced graphene oxide (ERGO), in order to demonstrate how the degree of reduction of graphene oxide can influence its electrical conductivity. The influence of the reduction on the conductivity properties of graphene-based films was studied through electrochemical techniques: cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The platform modified with CRGO, which presented higher electrical conductivity compared to ERGO, was used in the electrochemical detection of the pesticide malathion and exhibited a low detection limit of 0.8 ng ml −1 (S/N=3). The results indicate that chemically reduced graphene oxide is a potential alternative for modifying electrodes surfaces designed for sensing distinct pollutants of environmental or agricultural interest.

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Section: Electrochemical Detection Of Malathionsupporting

confidence: 63%

Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Migliorini

Sanfelice

Mercante

et al. 2019

Mater. Res. Express

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“…The recovery of the malathion from the spiked lettuce sample ranged from 96% to 98% on employing the designed bio-electrode. 81 nanocomposite. This nanocomposite combined the higher catalysis of MoS 2 with the better electronic conductivity of GN-CNTs and displayed higher electrochemical chrysanthemum tea with compatible outputs to the ndings observed in high-performance liquid chromatography.…”

Section: Electrochemical Sensingmentioning

confidence: 99%

Recent developments in conducting polymers: applications for electrochemistry

et al. 2020

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“…More recently, CNMs/CPs nanocomposites have received considerable attention as sensing materials due to their extraordinary proprieties mainly including excellent electrical conductivities, large active surface area and stability [2]. Monitoring and control of environmental pollution are fields that these nanocomposites have been extensively used as sensors to analyze a variety of pollutants such as heavy metals ions (Pb 2+ , Cd 2+ , Hg 2+ ) and pesticides [3,4]. In addition, to overcoming the new challenges posed by different samples matrices.…”

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confidence: 99%

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

Oularbi

Turmine

Rhazi³

2017

J Solid State Electrochem

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In this paper, a new nanocomposite of polypyrrole (PPy) and carbon nanofibers (CNFs) modified carbon paste electrode (CPE) has been reported for the determination of traces lead ions (Pb 2+ ). The obtained nanocomposite was fabricated by combining the unique advantages of PPy and CNFs using a very simple approach, which consists on modifying the CPE by the functionalized CNFs and then by the PPy film using galvanostatic mode. Several techniques were used to investigate the functionalized CNFs and the PPy/CNFs nanocomposite including Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) for surface layers of CNFs, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) for the electrical proprieties of the PPy/CNFs nanocomposite. The surface morphologies were examined by field emission gun scanning electron microscopy (FEG-SEM). The square wave anodic striping voltammetry (SWASV) was used to investigate the analytical performances of the designed electrode PPy/CNFs/CPE. Different parameters that affect the stripping analysis of Pb 2+ including supporting electrolyte, deposition potential, and deposition time were investigated. Under the optimum experimental conditions, a good linearity between the stripping peak currents and the concentration of Pb 2+ was obtained in the range of concentration from 0.2 to 130 µg L -1 Pb 2+ . The detection limit was estimated to be 0.05 µg L -1 Pb 2+ . Finally, the proposed method has been successfully applied for the determination of Pb 2+ in real samples of tap water with satisfactory results.

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Conducting polymer and multi-walled carbon nanotubes nanocomposites based amperometric biosensor for detection of organophosphate

Cited by 55 publications

References 37 publications

Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Electrochemical sensor based on polyamide 6/polypyrrole electrospun nanofibers coated with reduced graphene oxide for malathion pesticide detection

Recent developments in conducting polymers: applications for electrochemistry

Electrochemical determination of traces lead ions using a new nanocomposite of polypyrrole/carbon nanofibers

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