Zinc Metal at a New ZnO Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

Abood, Emad Salaam; Jouda, Amer Mousa; Mashkoor, Muthana Saleh

doi:10.5101/nbe.v10i2.p149-155

Cited by 10 publications

(10 citation statements)

References 13 publications

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“…Chronoamperometry gives a better signal-to-noise ratio in comparison to other amperometric techniques [20–24], and the use of a thin slab of fluids mechanically clamped to the electrodes is more resistant to vibration than analysis in a larger volume of solution. For faradaic diffusion-limited currents, the current-time response is described by the Cottrell equation.…”

Section: Resultsmentioning

confidence: 99%

Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA

et al. 2019

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How to fabricate scale low-cost microfluidic device for detection of biomarkers owns a great requirement. Herein, it is for the first time reported that a new microfluidic device based on bonding polydimethylsiloxane microfluidic channels onto the substrate of a screen-printed electrode with coating glass solution was fabricated for electrochemical sensing of prostate-specific antigen (PSA). Compared to traditional microfabrication processes, this method is simple, fast, low cost, and also suitable for mass production. The prepared screen-printed electrode-based microfluidic device (CASPE-MFD) was used for the detection of the PSA in human serum. The prepared CASPE-MFD had a detection limit of 0.84 pg/mL (25.8 fM) and a good linearity with PSA concentration ranging from 0.001 to 10 ng/mL, which showed a great promise platform toward the development of miniaturized, low-cost electrochemical microfluidic device for use in human health, environmental monitoring, and other applications. Electronic supplementary material The online version of this article (10.1186/s11671-019-2857-6) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA

et al. 2019

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“…A cyclic voltammetry that can be reversed in a pinch. These parameters were obtained after observing that the curve had shifted upward and the slope had increased, indicating that reaction tacking was occurring on the electrode surface, where the temperature increased while the solvent temperature stayed constant [32,34]. We found the scan rate rose, the beaks shifted to the negative side, indicating a clear signal using a carbon past electrode (working electrode) covered with Fe3O4 nanoparticles.…”

Section: Thermodynamic Studies Of the Electro-oxidation Of Fe2o3 Nps Electrodementioning

confidence: 97%

New Fe2O3 Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study Abstract

Abood

2021

Egypt. J. Chem.

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The cyclic voltammetry (CV) technique was accustomed to look into the electro oxidation of iron ions in water using a novel carbon paste electrode CPE enhanced with iron oxide nanoparticles. The revised electrode exhibited a high resolving function, allowing the overlapping voltametric response of Fe-ion to be resolved into a single welldefined peak. The voltage differential between Epa (anodic) and Epc (cathodic) was higher than 200 mV; this range is referred to as the quest-reversible mechanism. At temperatures ranging from 15 to 35 °C, the kinetics of the electrode were investigated. Voltammogram data revealed a rise in temperature, which resulted in an increase in negative shift, diffusion electron transfer in the Fe redox reaction. The Randles-Sevcik equation yielded a diffusion coefficient of 4.9 x 10 -5 ; the rate constant K was 2.3 x 10 -4 ; and the peak current of Fe-ion rose linearly with concentrations ranging from 1 to 5 ppm.

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“…From last result, the constant of reaction Kp was calculated by used Nicholson equation (Eq. ( 3)) [22]:…”

Section: Temperature Dependence Study On the E L E C T R O -O X I D A T I O N O F Z N O N A N O P A R T I C L E Electrodementioning

confidence: 99%

Zn, Cu and Mn Determination by Metals Oxide Nanoparticles Mix Ions Selective Carbon Past Electrode Industrialization and Cyclic Voltammetry Application Study

Abood¹

2021

Nano BioMed ENG

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A new modified ion selective electrode with carbon and metal oxide nanoparticles to increase sensitivity and selectivity to measure the trace concentration of heavy elements in solutions and pharmaceutical compounds.by preparing the Nano-oxides of ZnO, CuO and MnO 2 using a hydrothermal method. The temperature and pH of the electrode studied to select the best conditions. Where the voltmogram recorded a single signal in relation to the oxidation and reduction process of the zinc element by a reversable mechanism rever to one electron transmission and a quasi-reversable signal for the copper element, and irreversible signal for the manganese element resulting from the transmission of two electrons. The thermodynamic and kinetic factors were also studied and finally the standard mixture of the elements salt was detection to electrode sensitivity mutation the result show the new electrode can distinguish between the signals produced by the oxidation and reduction process of the three elements as the same time with three deferent peaks for oxidation and two peaks of redaction.

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Zinc Metal at a New ZnO Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study

Cited by 10 publications

References 13 publications

Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA

Microfluidic Device Directly Fabricated on Screen-Printed Electrodes for Ultrasensitive Electrochemical Sensing of PSA

New Fe2O3 Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study Abstract

Zn, Cu and Mn Determination by Metals Oxide Nanoparticles Mix Ions Selective Carbon Past Electrode Industrialization and Cyclic Voltammetry Application Study

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