EDTA-modified PANI/SWNTs nanocomposite for differential pulse voltammetry based determination of Cu(II) ions

Deshmukh, Megha A.; Patil, Harshada K.; Bodkhe, Gajanan A.; Yasuzawa, Mikito; Koinkar, Pankaj; Ramanavičienė, Almira; Shirsat, M.D.; Ramanavičius, Arūnas

doi:10.1016/j.snb.2017.12.160

Cited by 115 publications

(58 citation statements)

References 58 publications

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“…LOD of this method was 100 nM with a response time of a few hours. Voltammetry is another widely used strategy , and differential pulse voltammetry based electrochemical sensor for Cu 2+ detection was reported . This research achieved an LOD of 1.4 µM and the response time was estimated to be several minutes including stirring and differential pulse voltammetry detection steps.…”

Section: Introductionmentioning

confidence: 90%

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Zhao

Liang

et al. 2019

Electrophoresis

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Copper is an indispensable trace element for human health. Too much or too little intake of copper ion (Cu2+) can lead to its own adverse health conditions. Therefore, detection of Cu2+ is always of vital importance. In this work, a simple sensor was developed for rapid detection of trace Cu2+ in water, in which L‐cysteine (Cys) as a molecular probe was self‐assembled on a gold interdigital electrode to form a monolayer for specific capture of Cu2+. The interfacial capacitance of interdigital electrode was detected to indicate the target adsorption level under an AC signal working as the excitation to induce directed movement and enrichment of Cu2+ to the electrode surface. This sensor reached a limit of detection of 4.14 fM and a satisfactory selectivity against eight other ions (Zn2+, Hg2+, Pb2+, Cd2+, Mg2+, Fe2+, As3+, and As5+). Testing of spiked tap water was also performed, demonstrating the sensor's usability. This sensor as well as the detection method shows a great application potential in fields such as environmental monitoring and medical diagnosis.

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Section: Introductionmentioning

confidence: 90%

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Zhao

Liang

et al. 2019

Electrophoresis

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“…[6] In order to enhance the sensitivity of the electrochemical determination of metal ions, several chemical modifications of electrode surfaces have been proposed in literature. The most used modifiers include bismuth [7,8] composites of carbon nanotubes, [9] carbon black, [10] chelating agents, [11] gold nanoparticles, [12,13] zeolite, [14] and graphene oxide. [15] On the other hand, nanomaterials based on the imprinting processes have been proposed in order to improve the selective determination of diverse analytes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Application of Ion‐Imprinted Nanoparticles in Electrochemical Sensors for Copper (II) Determination

et al. 2019

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We report here the synthesis and characterisation of ion imprinted polymers nanoparticles (nanoIIPs) and their application as electrochemical sensors for Cu2+ ions determination. Imprinted nanoparticles were developed following a free radical polymerisation in water and subsequently immobilised on the surface of gold screen printed electrodes (SPAuE). Characterisation of nanoIIPs was performed using dynamic light scattering (DLS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Electrochemical determination of Cu2+ was achieved in water samples using differential pulse voltammetry (DPV). Voltammetric responses demonstrate different current responses for copper(II)‐imprinted polymers nanoparticles (Cu‐nanoIIPs) and non‐imprinted polymer nanoparticles. The nanoIIPs sensor responds to copper (II) in a linear range between 1.9 and 61 nM, with a sensitivity of 0.0618 μA nM−1. The limit of detection (LOD) and limit of quantification (LOQ) of the electrochemical sensor tested in buffer solution were 74 pM and 247 pM, respectively. Furthermore, the sensor presents high selectivity when tested against other ions such as Ni2+, Zn2+, NO3−, and CrO42−, and it is potentially suitable for environmental monitoring of heavy metals and food control. The sensor responses were also successfully evaluated in spiked commercialised drinking water.

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“…Although these methods can be used for the detection of heavy metals ions, they require relatively expensive instruments, complex operating procedures and long detection time. However, electrochemical methods, such as anodic stripping voltammetry (ASV), show significant advantages due to its simplicity, portability, low cost and rapid analysis . Both Mercury drop electrode and bismuth film electrode are usually used to detect heavy metals, but those methods may bring adverse effect on environment and human body at the same time .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a number of factors such as cost, electrical conductivity, chemical stability and toxicity should be considered in the application of electrode . Inorganic materials have attracted more and more attention because of their low cost, good compatibility and strong adsorption ability to heavy metals ions . Especially, metal‐based nanomaterials, such as metal oxides, carbonaceous metals and their composites are commonly used for electrochemical detection of heavy metals ions.…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on A Glassy Carbon Electrode Modified with GO/MnO₂ for Simultaneous Determination of Trace Cu(II) and Pb(II) in Environmental Water

Sun

Wang

et al. 2019

ChemistrySelect

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In this study, manganese dioxide hybridized with graphene oxide (GO/MnO2) nanocomposite was prepared by a facile synthesis method, which was applied to modify the glassy carbon electrode (GCE) in an electrochemical sensor of Cu(II) and Pb(II) for the first time. The morphology and structure of the nanocomposite were investigated by scanning electron microscopy, transmission electron microscopy and X‐ray diffraction, which exhibited MnO2 had been uniformly attached to the lamellar structure of GO, resulting in more adsorptive sites. Electrochemical properties of GO/MnO2/GCE were characterized by cyclic voltammetry and electrochemical impedance spectroscopy and the result confirmed GO/MnO2/GCE had an excellent electrochemical performance. Furthermore, the important factors affecting on the sensor sensitivity, including pH value, deposition potential, deposition time and material proportion were systematically investigated using square wave anodic stripping voltammetry (SWASV). The interferences from other ions on the target ion have also been discussed in this study. Under the optimal conditions, the GO/MnO2/GCE exhibited the linear ranges of 0.05 ∼ 1 μM for Cu(II) and Pb(II) with the detection limits of 1.67 nM and 3.33 nM, respectively, which was much lower than some electrochemical methods in reported literatures. The work provides a novel, simple and fast method for the simultaneous determination of Cu(II) and Pb(II).

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EDTA-modified PANI/SWNTs nanocomposite for differential pulse voltammetry based determination of Cu(II) ions

Cited by 115 publications

References 58 publications

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Synthesis and Application of Ion‐Imprinted Nanoparticles in Electrochemical Sensors for Copper (II) Determination

A Novel Electrochemical Sensor Based on A Glassy Carbon Electrode Modified with GO/MnO₂ for Simultaneous Determination of Trace Cu(II) and Pb(II) in Environmental Water

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EDTA-modified PANI/SWNTs nanocomposite for differential pulse voltammetry based determination of Cu(II) ions

Cited by 115 publications

References 58 publications

Rapid detection of trace Cu2+ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Rapid detection of trace Cu2+ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Synthesis and Application of Ion‐Imprinted Nanoparticles in Electrochemical Sensors for Copper (II) Determination

A Novel Electrochemical Sensor Based on A Glassy Carbon Electrode Modified with GO/MnO2 for Simultaneous Determination of Trace Cu(II) and Pb(II) in Environmental Water

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Product

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About

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

Rapid detection of trace Cu²⁺ using an l‐cysteine based interdigitated electrode sensor integrated with AC electrokinetic enrichment

A Novel Electrochemical Sensor Based on A Glassy Carbon Electrode Modified with GO/MnO₂ for Simultaneous Determination of Trace Cu(II) and Pb(II) in Environmental Water