Picomolar, Electrochemical Detection of Paraoxon Ethyl, by Strongly Coordinated NiCo2O4-SWCNT Composite as an Electrode Material

Kulkarni, B.; Suvina, V.; Pramoda, K.; Balakrishna, Ramachandran

doi:10.1016/j.jelechem.2023.117175

Cited by 11 publications

(1 citation statement)

References 114 publications

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“…Several analytical methods have been developed to detect the concentration of paraoxon-ethyl in the environmental matrices based on ultraviolet–visible spectroscopy, surface-enhanced Raman spectroscopy, chemiluminescence, high-performance liquid chromatography–mass spectrometry, gas chromatography–mass spectrometry, quartz crystal microbalance, biosensors, , and electrochemical methods. − Although these methods are accurate and trustworthy, their applicability is compromised by their complex pretreatment for sample preparation, overpriced instruments, and the requirement of trained personnel, which make them impractical for daily routine analysis. Electrochemical techniques were developed to address these issues because they can detect very low concentrations of analytes with good reproducibility and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Wahyuni,

Putra,

Rahman

et al. 2024

ACS Omega

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Herein, a nonenzymatic detection of paraoxon-ethyl was developed by modifying a glassy carbon electrode (GCE) with gold−silver core−shell (Au−Ag) nanoparticles combined with the composite of graphene with poly(3,4-ethylenedioxythiophene)/ poly(styrenesulfonate) (PEDOT:PSS). These core−shell nanoparticles (Au−Ag) were synthesized using a seed-growth method and characterized using UV−vis spectroscopy and high-resolution transmission electron microscopy (HR-TEM) techniques. Meanwhile, the structural properties, surface morphology and topography, and electrochemical characterization of the composite of Au−Ag core−shell/graphene/PEDOT:PSS were analyzed using infrared spectroscopy, field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), and electrochemical impedance spectroscopy (EIS) techniques. Moreover, the proposed sensor for paraoxon-ethyl detection based on Au−Ag core− shell/graphene/PEDOT:PSS modified GCE demonstrates good electrochemical and electroanalytical performance when investigated with cyclic voltammetry (CV), differential pulse voltammetry (DPV), and chronoamperometry techniques. It was found that the synergistic effect between Au−Ag core−shell nanoparticles and the composite of graphene/PEDOT:PSS provides a higher conductivity and enhanced electrocatalytic activity for paraoxon-ethyl detection at an optimum pH of 7. At pH 7, the proposed sensor for paraoxon-ethyl detection shows a linear range of concentrations from 0.2 to 100 μM with a limit of detection of 10 nM and high sensitivity of 3.24 μA μM −1 cm −2 . In addition, the proposed sensor for paraoxon-ethyl confirmed good reproducibility, with the possibility of being further developed as a disposable electrode. This sensor also displayed good selectivity in the presence of several interfering species such as diazinon, carbaryl, ascorbic acid, glucose, nitrite, sodium bicarbonate, and magnesium sulfate. For practical applications, this proposed sensor was employed for the determination of paraoxon-ethyl in real samples (fruits and vegetables) and showed no significant difference from the standard spectrophotometric technique. In conclusion, this proposed sensor might have a potential to be developed as a platform of electrochemical sensors for pesticide detection.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Wahyuni,

Putra,

Rahman

et al. 2024

ACS Omega

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Cobalt‐Based Materials in Supercapacitors and Batteries: A Review

Goudar,

S. N.,

Chapi

et al. 2024

Adv Energy and Sustain Res

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Energy demand has become a persistent concern and high‐performance energy storage systems have increasingly undergone development. Supercapacitors and batteries pose great impact on energy storage and garner a great deal of attention from technologies and researchers alike. The performance of energy saving devices is primarily determined by the electrode material in terms of high specific capacitance, excellent conductivity, remarkable natural abundance, and unique electrochemical qualities, also large surface area. Cobalt (Co)‐based materials are unique electrode materials widely used in energy storage devices. Nevertheless, a combination of Co and ferrite materials such as nickel, zinc, and copper, or Co/nonferrite materials like metal–organic frameworks and layered double hydroxides has improved their ultimate efficiency. This review deals with energy storage applications of Co‐based materials, categorizing ferrites, their electrochemical characterization, performance, also design and manufacturing intended to supercapacitors and batteries applications. Summarizing the main outcomes of the literature on batteries and supercapacitors, energy storage systems comprising Co‐based materials combined with carbon nanotubes, graphene, silica, copper, zinc, nickel, cadmium, ferrous, and lanthanum are reviewed and discussed. Lithium‐ion batteries are investigated specifically, and perspectives on Co‐based ferrite development for future generations of supercapacitors and batteries are outlined.

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Rational Construction of Bi₂CuO₁₂Se₄ and VGCFs@Fe₂O₃ Composite Electrodes for High‐Performance Semi‐Solid‐State Asymmetric Supercapacitors

Nagaraju,

Ramulu,

Arbaz

et al. 2024

Small Methods

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Recently, supercapacitors (SCs) are extensively explored as effective energy storage devices. Specifically, asymmetric SCs are being developed to enhance energy density using suitable materials with favorable nanostructures. This study describes the construction of a bismuth copper selenite (BCS‐200) working electrode with an ultrathin nanosheet (UTNS) architecture. This morphology is achieved using a low‐cost electrodeposition (ED) method, followed by annealing. The impact of ED time on the development of morphology is studied by synthesizing comparative electrodes simultaneously. The optimized BCS‐200 electrode prepared with a deposition time of 200 s shows higher specific capacity/capacitance (Cs/Csc) values of 330.9 mAh g−1/2206.6 F g−1 than the other synthesized electrodes (BCS‐100, BCS‐150, BCS‐250, and BCS‐300). Besides, a vapor‐grown carbon fiber (VGCF)‐added Fe2O3 composite coated on nickel foam (NF) is developed as a negative electrode. The VGCFs@Fe2O3/NF electrode exhibits the (Cs/Csc) values of 183.5 mAh g−1/734.4 F g−1, which is associated with ultra‐high cycling stability. In addition, the fabricated BCS‐200 and VGCFs@Fe2O3/NF electrodes are combined to construct a wearable semi‐solid‐state asymmetric SC (SSASC) with an energy density (Ed) of 20.5 Wh kg−1 and a cycling stability of 91.7% over 40000 charge/discharge cycles. Furthermore, the real‐time applicability of the SSASC is verified by powering it in practical applications.

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Picomolar, Electrochemical Detection of Paraoxon Ethyl, by Strongly Coordinated NiCo2O4-SWCNT Composite as an Electrode Material

Cited by 11 publications

References 114 publications

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Cobalt‐Based Materials in Supercapacitors and Batteries: A Review

Rational Construction of Bi₂CuO₁₂Se₄ and VGCFs@Fe₂O₃ Composite Electrodes for High‐Performance Semi‐Solid‐State Asymmetric Supercapacitors

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Picomolar, Electrochemical Detection of Paraoxon Ethyl, by Strongly Coordinated NiCo2O4-SWCNT Composite as an Electrode Material

Cited by 11 publications

References 114 publications

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Electrochemical Sensors based on Gold–Silver Core–Shell Nanoparticles Combined with a Graphene/PEDOT:PSS Composite Modified Glassy Carbon Electrode for Paraoxon-ethyl Detection

Cobalt‐Based Materials in Supercapacitors and Batteries: A Review

Rational Construction of Bi2CuO12Se4 and VGCFs@Fe2O3 Composite Electrodes for High‐Performance Semi‐Solid‐State Asymmetric Supercapacitors

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Rational Construction of Bi₂CuO₁₂Se₄ and VGCFs@Fe₂O₃ Composite Electrodes for High‐Performance Semi‐Solid‐State Asymmetric Supercapacitors