Nutshells as modifiers of carbon paste electrodes used in detecting chloroorganic water pollutants

Electrochemical properties of a carbon paste electrode (graphite) modified with hazelnut and walnut shells were investigated. The adsorption of 4-chlorophenol (4-CP) on the studied materials was determined, and the hazelnut shells were found to provide a higher adsorption capacity. The hazelnut and walnut shells were used to modify the carbon paste electrode to detect 4-CP by cyclic voltammetry. Compared to an unmodified electrode, all of the new paste electrodes showed much higher sensitivity in the 4-CP detection.

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Electrochemical Behavior of Cu(II) on Carbon Paste Electrode Modified by Humic Acid, Cyclic Voltammetry Study

Electroanalysis ◽

10.1002/1521-4109(200201)14:1<71::aid-elan71>3.0.co;2-b ◽

2002 ◽

Vol 14 (1) ◽

pp. 71-77 ◽

Cited By ~ 18

Author(s):

Wilson T. Lopes da Silva ◽

Christine Thobie-Gautier ◽

Maria O. O. Rezende ◽

Nabil El Murr

Keyword(s):

Cyclic Voltammetry ◽

Humic Acid ◽

Carbon Paste Electrode ◽

Electrochemical Behavior ◽

Carbon Paste ◽

Paste Electrode

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Determination of Analgesics (Dipyrone and Acetaminophen) in Pharmaceutical Preparations by Cyclic Voltammetry at a Copper(II) Hexacyanoferrate(III) Modified Carbon Paste Electrode

Current Analytical Chemistry ◽

10.2174/157341109789077759 ◽

2009 ◽

Vol 5 (4) ◽

pp. 303-310 ◽

Cited By ~ 22

Author(s):

Marcos Teixeira ◽

Luiz Marcolino-Junior ◽

Orlando Fatibello-Filho ◽

Fernando Moraes ◽

Ronaldo Nunes

Keyword(s):

Cyclic Voltammetry ◽

Carbon Paste Electrode ◽

Pharmaceutical Preparations ◽

Modified Carbon Paste Electrode ◽

Carbon Paste ◽

Paste Electrode

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A new electrochemical sensor based on carbon paste electrode/Ru(III) complex for determination of nitrite: Electrochemical impedance and cyclic voltammetry measurements

Measurement ◽

10.1016/j.measurement.2016.06.034 ◽

2016 ◽

Vol 92 ◽

pp. 524-533 ◽

Cited By ~ 20

Author(s):

Achour Terbouche ◽

Siham Lameche ◽

Chafia Ait-Ramdane-Terbouche ◽

Djamila Guerniche ◽

Djahida Lerari ◽

...

Keyword(s):

Cyclic Voltammetry ◽

Electrochemical Sensor ◽

Carbon Paste Electrode ◽

Electrochemical Impedance ◽

Carbon Paste ◽

Paste Electrode

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Electrochemical characterisation of novel screen-printed carbon paste electrodes for voltammetric measurements

Journal of the Serbian Chemical Society ◽

10.2298/jsc170207048s ◽

2017 ◽

Vol 82 (7-8) ◽

pp. 865-877 ◽

Cited By ~ 7

Author(s):

Milan Sýs ◽

Elmorsy Khaled ◽

Radovan Metelka ◽

Karel Vytřas

Keyword(s):

Glassy Carbon ◽

Carbon Paste Electrode ◽

Carbon Powder ◽

Carbon Paste ◽

Surface Characterisation ◽

Carbon Paste Electrodes ◽

Screen Printed Electrodes ◽

Paste Electrode ◽

Carbon Based ◽

Screen Printed

This work is focused on the homemade screen-printed carbon paste electrode containing basically graphite powder (or glassy carbon powder), poly(vinylbchloride) (PVC) and paraffin oil. It compares the electrochemical properties of conventional carbon-based electrodes and prepared screen-printed carbon paste electrodes towards [Fe(CN)6]3-/[Fe(CN)6]4- and quinone/hydroquinone redox couples. Significant attention is paid to the development of the corresponding carbon inks, printing and the surface characterisation of the resulting electrodes by the scanning electron microscopy. An optimization consisted of the selection of the organic solvent, the optimal content of the used polymer with the chosen paste binder, appropriate isolation of electric contact, etc. Very similar properties of the prepared screen-printed electrodes, containing only corresponding carbon powder and 3 % PVC, with their conventional carbon paste electrode and glassy carbon-based electrodes, were observed during their characterisation. Screen-printed electrodes, with the pasting liquid usually provided satisfactory analytical data. Moreover, they can be used in the flow injection analysis and could undoubtedly replace the carbon paste grooved electrodes. It can be assumed that certain progress in the development of electrode materials was achieved by this research.

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Quantitative determination of phenol in natural decayed leaves using procaine modified carbon paste electrode surface by cyclic voltammetry

Desalination ◽

10.1016/j.desal.2010.02.014 ◽

2010 ◽

Vol 256 (1-3) ◽

pp. 64-69 ◽

Cited By ~ 12

Author(s):

Ibrahim Ender Mülazımoğlu ◽

Ecir Yılmaz

Keyword(s):

Cyclic Voltammetry ◽

Quantitative Determination ◽

Carbon Paste Electrode ◽

Electrode Surface ◽

Modified Carbon Paste Electrode ◽

Carbon Paste ◽

Paste Electrode

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A Facile In-Situ Development of L-Valine Film onto the Surface of Carbon Paste Electrode Towards the Detection of Environmentally Hazardous 4-Amino Phenol

Zeitschrift für Physikalische Chemie ◽

10.1515/zpch-2019-0007 ◽

2019 ◽

Vol 0 (0) ◽

Author(s):

T. Venu Gopal ◽

Tukiakula Madhusudana Reddy ◽

P. Shaikshavali ◽

G. Venkataprasad ◽

P. Gopal

Keyword(s):

Cyclic Voltammetry ◽

Carbon Paste Electrode ◽

Electrochemical Impedance ◽

Limit Of Detection ◽

Small Scale ◽

Carbon Paste ◽

Relative Standard ◽

Paste Electrode

Abstract A small scale of environmentally hazardous 4-aminophenol can show significant impact on human health. Hence, in the present work, we have designed L-Valine film (Vf) modified carbon paste electrode (Vf/CPE) for the determination of 4-aminophenol. Herein, a facile in-situ L-Valine film was developed by electrochemical polymerization method onto the surface of bare carbon paste electrode (BCPE) with the help of cyclic voltammetry (CV) technique. A two-folds of electrochemical peak current enhancement was achieved at Vf/CPE in comparison with BCPE towards the determination of 4-aminophenol in optimum pH 7.0 of phosphate buffer solution (PBS). This was achieved due to the large surface area and conductive nature of Vf/CPE, which was concluded through the techniques of cyclic voltammetry and electrochemical impedance spectroscopy (EIS). The effect of pH of buffer and scan rate studies were successfully studied. Morphological changes of BCPE and Vf/CPE was studied with the help of scanning electron microscopy (SEM). The formation of Vf on CPE was also analyzed by Fourier transform infrared (FTIR) spectra. Under the optimized conditions, the limit of detection (LOD) and limit of quantification (LOQ) values of 4-aminophenol were estimated with the aid of chronoamperometry (CA) technique and was found to be 9.8 μM and 32 μM, respectively. Finally the proposed method was found to have satisfactory repeatability, reproducibility and stability results with low relative standard deviation (RSD) values.

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Electrochemical Behavior of Carbon Paste Electrode with Gold-Bearing Pyrite in Bioleaching

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.825.360 ◽

2013 ◽

Vol 825 ◽

pp. 360-363 ◽

Cited By ~ 1

Author(s):

Zhi Wu ◽

Shui Ping Zhong ◽

Zeng Ling Wu ◽

Zhong Sheng Huang ◽

Brenda K.C. Chan

Keyword(s):

Cyclic Voltammetry ◽

Carbon Paste Electrode ◽

Electrochemical Behavior ◽

Oxidation Rate ◽

Elemental Sulphur ◽

Polarization Current ◽

Carbon Paste ◽

Fundamental Study ◽

Paste Electrode ◽

Gold Bearing

The dissolution of gold-bearing pyrite plays an important role in bioleaching of gold. This paper describes a fundamental study on the electrochemical behavior and reaction mechanisms of gold-bearing pyrite leaching in the form of Carbon Paste Electrode (CPE) with and without microorganisms using Cyclic Voltammetry (CV) and polarization curve. A two step process was suggested from Cyclic voltammetry. Electrode passivation by elemental sulphur was observed below 700mV (vs. SCE), elemental sulphur was then oxidized to sulphate when the electrode potential further increased from 700mV. The polarization current density of CPE and the oxidation rate of pyrite are further enhanced by the presence of microorganisms. Analyses of EDS and XPS confirmed the formation of elemental sulphur and sulphate. This electrochemical method successfully showed its simplicity and reliability to measure oxidation rate of gold bearing pyrite.

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