Relevant bibliographies by topics / Glassy Carbon Electrode

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Glassy Carbon Electrode'

Author: Grafiati
Published: 4 June 2021
Last updated: 30 May 2022

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Journal articles on the topic "Glassy Carbon Electrode"

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Lee, P. T., D. Lowinsohn, and R. G. Compton. "The selective electrochemical detection of homocysteine in the presence of glutathione, cysteine, and ascorbic acid using carbon electrodes." Analyst 139, no. 15 (2014): 3755–62. http://dx.doi.org/10.1039/c4an00372a.

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The detection of homocysteine, HCys, was achieved with the use of catecholvia1,4-Michael addition reaction using carbon electrodes: a glassy carbon electrode and a carbon nanotube modified glassy carbon electrode.
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Sun, Dan Zi. "Electrocatalytic Reduction of Nitrite at Carbon-Nanotube-Modified Glassy Carbon Electrodes." Advanced Materials Research 306-307 (August 2011): 1221–24. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.1221.

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Carbon-nanotube(CNT)-modified glassy carbon electrodes exhibiting strong electrocatalytic response toward nitrite are described. Cyclic voltammetry and differential pulse voltammetry are used to investigate the electrocatalytic property of CNT-modified glassy carbon electrode toward the reduction of nitrite. The modified electrode could be used for nitrite sensing.
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Ghoseyri, Airin, Afshin Farahbakhsh, Sajad Khakpur, and Nahid Hosseinfakhrabadi. "The Effect of Electrode’s Material on Immobilization of Sulfite Oxidase Enzyme in Construction of Sulfite Biosensors." Advanced Materials Research 605-607 (December 2012): 1387–90. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1387.

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Electrodes have an important role in performance of sulfite detector biosensors. To increase efficiency of performance, using immobilizing processes in the structure of an enzyme electrode is very important. Enzymes can be connected to the working electrode by crosslinking and trapping methods. In this paper, sulfite oxidase enzyme has immobilized on aluminum, screen-printed carbon and glassy carbon electrodes in different ways. Flow production measurement of amperometric cycle showed that aluminum and screen-printed carbon electrode had better performance at concentrations less than 110 micro-molar, but in higher concentrations, glassy carbon electrode showed highest conductivity.
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Đorđević, Jelena, Ana Kalijadis, Ksenija Kumrić, Zoran Jovanović, Zoran Laušević, and Tatjana Trtić-Petrović. "Glassy carbon and boron doped glassy carbon electrodes for voltammetric determination of linuron herbicide in the selected samples." Open Chemistry 10, no. 4 (August 1, 2012): 1271–79. http://dx.doi.org/10.2478/s11532-012-0042-1.

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AbstractIn this study the application of home-made unmodified (GC) and bulk modified boron doped glassy carbon (GCB) electrodes for the voltammetric determination of the linuron was investigated. The electrodes were synthesized with a moderate temperature treatment (1000°C). Obtained results were compared with the electrochemical determination of the linuron using a commercial glassy carbon electrode (GC-Metrohm). The peak potential (E p ) of linuron oxidation in 0.1 mol dm−3 H2SO4 as electrolyte was similar for all applied electrodes: 1.31, 1.34 and 1.28 V for GCB, GC and GC-Metrohm electrodes, respectively. Potential of linuron oxidation and current density depend on the pH of supporting electrolyte. Applying GCB and GC-Metrohm electrodes the most intensive electrochemical response for linuron was obtained in strongly acidic solution (0.1 mol dm−3 H2SO4). Applying the boron doped glassy carbon electrode the broadest linear range (0.005–0.1 µmol cm−3) for the linuron determination was obtained. The results of voltammetric determination of the linuron in spiked water samples showed good correlation between added and found amounts of linuron and also are in good agreement with the results obtained by HPLC-UV method. This appears to be the first application of a boron doped glassy carbon electrode for voltammetric determination of the environmental important compounds.
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García-Morales, Nancy Gabriela, Luis Alfonso García-Cerda, Bertha Alicia Puente-Urbina, Leonor María Blanco-Jerez, René Antaño-López, and Federico Castañeda-Zaldivar. "Electrochemical Glucose Oxidation Using Glassy Carbon Electrodes Modified with Au-Ag Nanoparticles: Influence of Ag Content." Journal of Nanomaterials 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/295314.

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This paper describes the application of glassy carbon modified electrodes bearing Aux-Agynanoparticles to catalyze the electrochemical oxidation of glucose. In particular, the paper shows the influence of the Ag content on this oxidation process. A simple method was applied to prepare the nanoparticles, which were characterized by transmission electron microscopy, Ultraviolet-Visible spectroscopy, X-ray diffraction spectroscopy, and cyclic voltammetry. These nanoparticles were used to modify glassy carbon electrodes. The effectiveness of these electrodes for electrochemical glucose oxidation was evaluated. The modified glassy carbon electrodes are highly sensitive to glucose oxidation in alkaline media, which could be attributed to the presence of Aux-Agynanoparticles on the electrode surface. The voltammetric results suggest that the glucose oxidation speed is controlled by the glucose diffusion to the electrode surface. These results also show that the catalytic activity of the electrodes depends on the Ag content of the nanoparticles. Best results were obtained for the Au80-Ag20nanoparticles modified electrode. This electrode could be used for Gluconic acid (GA) production.
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Wójcik, Szymon, and Małgorzata Jakubowska. "Optimization of anethole determination using differential pulse voltammetry on glassy carbon electrode, boron doped diamond electrode and carbon paste electrode." Science, Technology and Innovation 3, no. 2 (December 27, 2018): 21–26. http://dx.doi.org/10.5604/01.3001.0012.8152.

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Voltammetry is the general term for all techniques in which the current is measured as a function of electrode potential. The voltammetric techniques can be applied for the quantitative analysis of inorganic and organic species and are best suited for substances which can be either oxidized or reduced on electrodes. These techniques are characterized by high sensitivity which results in the possibility of performing determinations at a low concentration level. In voltammetry, many different types of working electrodes are applied. One of the important groups are solid electrodes, among which carbon electrodes play an important role. They represent a good alternative to mercury electrodes, however, surface preparation before the usage is required. In this work anethole determination will be presented using three types of carbon electrodes: glassy carbon electrode, boron doped diamond electrode and carbon paste electrode. Optimization process will be also described.
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Sýs, Milan, Elmorsy Khaled, Radovan Metelka, and Karel Vytřas. "Electrochemical characterisation of novel screen-printed carbon paste electrodes for voltammetric measurements." Journal of the Serbian Chemical Society 82, no. 7-8 (2017): 865–77. http://dx.doi.org/10.2298/jsc170207048s.

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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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Juan, Wang, Tang Ping, Zhao Fa-qiong, and Zeng Bai-zhao. "Voltammetric response of epinephrine at carbon nanotube modified glassy carbon electrode and activated glassy carbon electrode." Wuhan University Journal of Natural Sciences 10, no. 5 (September 2005): 913–18. http://dx.doi.org/10.1007/bf02832438.

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L. de Souza, L., and C. A. L. G. de O. Forbicini. "USO DA VOLTAMETRIA CÍCLICA E DA ESPECTROSCOPIA DE IMPEDÂNCIA ELETROQUÍMICA NA DETERMINAÇÃO DA ÁREA SUPERFICIAL ATIVA DE ELETRODOS MODIFICADOS À BASE DE CARBONO." Eclética Química Journal 39, no. 1 (July 9, 2014): 49. http://dx.doi.org/10.26850/1678-4618eqj.v39.1.2014.p49-67.

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Carbon-based electrodes as well the ion exchange electrodes among others have been applied mainly in the treatment of industrial effluents and radioactive wastes. Carbon is also used in fuel cells as substrate for the electrocatalysts, having high surface area which surpasses its geometric area. The knowledge of the total active area is important for the determination of operating conditions of an electrochemical cell with respect to the currents to be applied (current density). In this study it was used two techniques to determine the electrochemical active surface area of glassy carbon, electrodes and ion exchange electrodes: cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The experiments were carried out with 0.1 mol.L-1 KNO3 solutions in a three-electrode electrochemical cell: carbon-based working electrode, platinum auxiliary electrode and Ag/AgCl reference electrode. The glassy carbon and porous carbon electrodes with geometric areas of 3.14 x 10-2 and 2.83 х 10-1 cm2, respectively, were used. The ion exchange electrode was prepared by mixing graphite, carbon, ion exchange resin and a binder, and this mixture was applied in three layers on carbon felt, using a geometric area of 1.0 cm2 during the experiments. The capacitance (Cd) of the materials was determined by EIS using Bode diagrams. The value of 172 μF.cm-2 found for the glassy carbon is consistent with the literature data (~200 μF.cm-2). By VC, varying the scan rate from 0.2 to 2 mV.s-1, the capacitance CdS (S = active surface area) in the region of the electric double layer (EDL) of each material was determined. By EIS, the values of Cd, 3.0 x 10-5 μF.cm-2 and 11 x 103 μF.cm-2, were found for the porous carbon and ion exchange electrodes, respectively, which allowed the determination of active surface areas as 3.73 x 106 cm2 and 4.72 cm2. To sum up, the combined use of EIS and CV techniques is a valuable tool for the calculation of active surface areas of carbon-based electrodes.
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Pazalja, Mirha. "Electrochemical Oxidation of 2,5-Dimercapto-1,3,4-thiadiazole on Carbon Electrodes Modified with Ru(III) Schiff Base Complex." Kemija u industriji 70, no. 7-8 (2021): 401–10. http://dx.doi.org/10.15255/kui.2020.068.

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The thiol compound 2,5-dimercapto-1,3,4-thiadiazole is a potential cathode material. The redox reactions of the mentioned thiol compound are slow at room temperature but can be enhanced using electron transfer mediators. The electrochemical oxidation of 2,5-dimercapto-1,3,4-thiadiazole on the surface of carbon electrodes modified with Ruthenium(III) Schiff base complex was studied by voltammetric methods and amperometric flow injection analysis. The electrocatalytic properties of Ruthenium(III) Schiff base complex on glassy carbon and screen printed carbon electrodes are enhanced by the addition of multi-walled carbon nanotubes and Nafion. Voltammetric studies showed that anodic oxidation of DMcT on a modified glassy carbon electrode occurs at a potential of +0.28 V vs. Ag/AgCl in Britton-Robinson buffer (pH 6.50). Flow injection amperometric measurements were performed at +0.20 V vs. Ag/AgCl in Britton-Robinson buffer solutions pH 6.50 at a 0.40 cm3 min–1 flow rate. The results of amperometric measurements for modified screen printed and glassy carbon electrodes showed that the screen printed electrode had a lower value of detection limit (0.38 mg dm–3) and quantification (1.28 mg dm–3), and a linear dynamic range from 1 to 500 mg dm–3 of 2,5-dimercapto-1,3,4-thiadiazole. Modified glassy carbon electrode provided a linear dynamic range up to 750 mg dm–3 of 2,5-dimercapto-1,3,4-thiadiazole with a detection limit of 3.90 mg dm–3 and quantification of 13.20 mg dm–3.
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Dissertations / Theses on the topic "Glassy Carbon Electrode"

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Perera, D. M. H. Kaushalya. "The study of DNA dynamics on glassy carbon electrode surfaces." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18191.

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Master of Science
Department of Chemistry
Daniel A. Higgins
The potential-dependent reorientation dynamics of double stranded DNA (ds-DNA) covalently attached to planar glassy carbon electrode (GCE) surfaces were studied in this thesis. The orientation of ds-DNA was investigated via the distance-dependent quenching of fluorescence from a 6–carboxyfluorescein (FAM6) flurophore to the electrode surface. The fluorophore was covalently bound to the distal end of the DNA. Fluorescence microscopy was employed for optical detection of FAM6 fluorescence and hence the DNA dynamics. The variation of the fluorescence from the dye with electrode potential is attributed to distance-dependent dipole-electrode energy transfer. Application of positive potentials (i.e., +0.2 V vs. open circuit potential, OCP) to the GCE caused the ds-DNA to align approximately parallel to the surface, yielding strong FAM6-electrode energy transfer and low fluorescence intensity. With the switching of the potential towards negative values (i.e., -0.4 V vs. OCP) the ds-DNA realigned perpendicular to the GCE surface leading to a reduction in energy transfer and high fluorescence intensity. Initial DNA reorientation upon a change in electrode potential is very fast. These fast dynamics have been observed and characterized in a number of previous publications. We have observed subsequent slow dynamics that we attribute to slow orientational relaxation of the DNA. Our observations were first reported by Q. Li, et al., J. Am. Chem. Soc. 2012, 134, 14467. In this thesis, this prior work is extended to verify the reproducibility of these new dynamics and to eliminate the possibility of certain artifacts as their source. Specifically, the experiments are repeated using a new cell design and a different buffer. In the primary experiments performed in this thesis, the dependence of the DNA reorientation dynamics on surface coverage was investigated by observing the fluorescence modulation as a function of probe concentration in the functionalization bath. Concentrations of 0.25, 1.0 and 1.5 µM 35-mer ds-DNA were employed. Electrodes functionalized at these concentrations have ds-DNA surface coverages of 1.18 x 10[superscript]12, 3.24 x 10[superscript]12 and 4.26 x 10[superscript]12 cm[superscript]-2, respectively. With increasing concentration of the DNA probe, the reorientation time constant at positive applied bias (vs. OCP) increased, indicting reorientation was slowed. In contrast, the time constant decreased with the negative applied bias (vs. OCP) indicating faster orientational relaxation. The possible origins for the observed trends in the reorientation time constant are discussed.
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Araminaitė, Rūta. "Study of electrocatalytic processes at Prussian blue modified glassy carbon electrode." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100213_101926-62386.

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The main purpose of this work is study of electrochemical hydrogen peroxide and ascorbate reactions on electrodes modified by Prussian blue (PB), with the aim to apply these electrodes in creation of sensors and biosensors. For this purpose, a detailed study of electrochemical reduction of hydrogen peroxide, as well as of oxidation of ascorbate at Prussian blue modified rotating disk electrode. In view of the results obtained, a mechanism for hydrogen peroxide reduction at PB modified electrode has been proposed. In accordance with this mechanism, electron transfer appears to be rate-limiting step. The kinetics of decomposition of PB modified electrode in the course of a cathodic reduction of hydrogen peroxide has been studied, and the influence of different factors to this process has been determined. Prototypes of sensors and biosensors, for different analytes have been elaborated and tested.
Darbo tikslas yra elektrocheminių vandenilio peroksido ir askorbato reakcijų tyrimas ant Berlyno mėlynuoju (BM) modifikuotų elektrodų, siekiant pritaikyti šiuos elektrodus jutiklių ir biojutiklių kūrimui. Ištirta vandenilio peroksido redukciją ir askorbato oksidaciją naudojant sukamojo disko elektrodą. Gauti rezultatai galimai įrodo stadijinį vandenilio peroksido katodinės redukcijos mechanizmą vykstantį ant BM modifikuoto elektrodo. Detaliai ištirta BM sluoksnio irimo kinetika vandenilio peroksido elektroredukcijos metu, ir nustatyti faktoriai, įtakojantys irimo proceso greitį. Sukurti jutiklių ir biojutiklių prototipai, kurie galėtų būti panaudoti biologiškai aktyvių medžiagų (vandenilio peroksido, askorbato, gliukozės) nustatymui.
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Mazloum-Ardakani, M., B. B. F. Mirjalili, M. Yavari, and M. A. Sheikh-Mohseni. "Electrocatalytic Behavior of Levodopa at MultiWall Carbon Nanotubes and 4-((E)-(2-Methyl-4-Nitrophenylimino) Methyl) Benzene-1,2-Diol Modified Glassy Carbon Electrode." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34938.

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This work describes a glassy carbon electrode (GCE) modified by 4-((E)-(2-methyl-4-nitrophenylimino) methyl) benzene-1,2-diol (abbreviated as MBD) and multiwall carbon nanotubes (MWNT) as an electrochemical sensor for monitoring of levodopa (LD) concentration. Different electrochemical parameters of MBD were obtained at MWCNT-GCE by cyclic voltammetry. Also the electrocatalytic behavior of LD was investigated at the MBD-MWNT-GCE by cyclic voltammetry, chronoamperometry and differential pulse voltammetry. Using the electrocatalysis of LD V in phosphate buffer solution pH 7.0 on this modified electrode it is possible to obtain a linear calibration curve from 5.0 10 – 7 to 9.0 10 – 4 M and a detection limit of 0.37 μM for LD by differential pulse voltammetry. The electrode was successfully applied for determination of LD in real sample. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/34938
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Dai, Yiqing. "Amperometric biosensors utilizing carbon nanotubes and metal deposits on glassy carbon electrode with poly(phenylenediamine) coatings." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/583.

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Pablo, Fleurdelis, of Western Sydney Nepean University, and Faculty of Science and Technology. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode." THESIS_FST_XXX_Pablo_F.xml, 1994. http://handle.uws.edu.au:8081/1959.7/207.

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This thesis describes the development of new adsorptive cathodic stripping voltammetric methods for reliable determination of some trace metals in biological and environmental materials on a glassy carbon mercury film electrode. In particular, the development of these methods involved selection of a suitable complexing agent for the respective metal ion studied, characterization of the electrode processes, investigation of factors affecting the voltammetric response such as concentration and pH of supporting electrolyte, concentration of complexing agent, accumulation potential, accumulation time and electrode rotation rate. Also, organic and inorganic interferences, linear concentration range, and detection limits were carefully considered. Furthermore, the analytical application of the method was demonstrated for each metal in biological and/or environmental materials, after optimization of the sample decomposition procedure. Some conclusions : the results obtained by the AdCSV method for the determination of tin in juices agreed reasonably with those obtained by atomic absorption method; the use of the adsorptive voltammetric technique after dry-ashing and UV treatment of the samples was successfully demonstrated for the determination of vanadium in standard reference materials such as urban particulate matter, peach leaves, apple leaves and bovine liver; and, the use of the adsorptive stripping voltammetric technique, after decomposition of samples by dry-ashing and UV treatment, was successfully demonstrated for the determination of molybdenum in peach leaves, apple leaves and bovine liver samples.
Doctor of Philosophy (PhD)
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Pablo, Fleurdelis. "Adsorptive stripping voltammetry of trace elements on a glassy carbon mercury film electrode /." View thesis, 1994. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030826.113026/index.html.

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Abdullahi, Mohamed Farah. "Modification of glassy carbon electrode (GCE) with prussian blue as a mediator on carbon nanotube materials through sequential deposition." Thesis, Vaal University of Technology, 2012. http://hdl.handle.net/10352/387.

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Prussian blue (PB) nanoparticles were synthesized from FeCl3.6H2O, K4[Fe(CN)6].3H2O, and from Fe(NO3)3.9H2O and K4[Fe(CN)6].3H2O, and then characterized by Fourier transform infrared (FT-IR), Ultraviolet-visible spectroscopy, X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), Scanning electron microscopy (SEM), Raman spectroscopy and thermogravimetric analysis. Graphene oxide and carbon nanotubes were also synthesized and characterized. PB nanoparticles, carbon nanotubes (CNT), graphene oxide (GO) and cetyltrimethylammonium bromide (CTAB) were sequentially deposited onto glassy carbon electrode surface to form chemically modified electrode for the detection of hydrogen peroxide (H2O2) and dopamine. The following electrodes were fabricated, GC-PB, GC-MWCNT, GCGO, GC-CTAB, GC-MWCNT-PB, GC-GO-PB and GC-CTAB-PB. Cyclic and Square wave voltammetric techniques were used to measure the hydrogen peroxide detectability of the electrodes at pH ranges of (3 - 7.4) in 0.1M phosphate buffer solution, in the absence or presence of 25 μL of H2O2. The GC-CNT-PB, GC-GO-PB,GC-CTAB-PB electrodes showed a good response for the detection of hydrogen peroxide in both acidic and neutral media while the GCPB electrode only showed good response in acidic media.
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AragÃo, Janmille da Silva. "Electrochemical Determination of diethylstilbestrol at glassy carbon electrode modified with gold nanoparticles and a film of multi-wall carbon nanotubes and cobalt phthalocyanine." Universidade Federal do CearÃ, 2016. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=16652.

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This paper describes the development of an electrochemical sensor glassy carbon modified with gold nanoparticles and a film of multiâwalled carbon nanotube and cobalt phthalocyanine (CoPc-fMWCNTs/AuNp/GCE) for the determination of diethylstilbestrol hormone (DES) in water samples and meat, using a square wave technique voltammetry. (SWV). The electrolyte used was Britton-Robinson buffer (BR) 0.04 mol L-1 pH 10.0. Initially it was studied the electrode configuration to be used for the development work, after the optimization of solution pH, study scan speed to evaluate the charge transfer kinetics in the redox process of the DES, the optimized parameters for SWV, the analytical curve, and finally, applying the methodology developed. The optimized parameters for SWV were f = 5 sâ1, a = 50 mV and ΔEs=1 mV. The CoPc-fMWCNTs/AuNp/GCE was ready to be used for the application since all conditions were optimized. Analytical curves were obtained in the concentration ranged from 7.9365 Ã 10−7 â 5.6604 Ã 10−6 mol Lâ1 (R = 0.9996) and there were obtained limits of detection (LOD) and quantification (LOQ) of 1.9910 x 10â7 mol Lâ1and 6.6367 x 10â7 mol Lâ1, respectively, being comparable to those reported in the literature. The repeatability and reproducibility of the proposed procedure were evaluated. The relative standard deviation (RSD) were 4.33% and 3.49%, respectively, indicating the precision of the assay. The recovery percentage was 98.56% for the water sample and 94.05% for beef sample (RSD of 0.40 and 1.55% respectively). The modified electrode has developed sensitivity, reproducibility and repeatability appropriate and consistent LOD and LOQ values with those reported in the literature. Moreover, the results obtained by the use of CoPc-fMWCNTs/AuNp/GCE proved very efficient as the detection and DES recovery, being thus a promising device in the detection and quantification of DES in water samples and food.
O presente trabalho descreve o desenvolvimento de um sensor eletroquÃmico de carbono vÃtreo modificado com nanopartÃculas de ouro, nanotubos de carbono de paredes mÃltiplas funcionalizados e ftalocianina de cobalto (CV/NpAu/NTCPMf-FcCo) para a determinaÃÃo do hormÃnio dietilestilbestrol (DES) em amostras de Ãgua e carne, utilizando a tÃcnica de voltametria de onda quadrada (VOQ). O eletrÃlito empregado foi tampÃo BrittonâRobinson (BR) 0,04 mol Lâ1 pH 10,0. Inicialmente estudou-se a configuraÃÃo do eletrodo a ser utilizado para o desenvolvimento do trabalho, depois a otimizaÃÃo do pH do meio, estudo da velocidade de varredura para avaliar a cinÃtica de transferÃncia de carga no processo redox do DES, otimizaÃÃo dos parÃmetros da VOQ, construÃÃo da curva analÃtica e por fim, a aplicaÃÃo da metodologia desenvolvida. Os parÃmetros otimizados para a VOQ foram: f = 5 sâ1, a = 50 mV e ΔEs = 1 mV. De posse de todas as condiÃÃes otimizadas para aplicaÃÃo do CV/NpAu/NTCPMf-FcCo, curvas analÃticas foram obtidas no intervalo de concentraÃÃo de 7,9365 à 10−7 â 5,6604 à 10−6 mol Lâ1 (R = 0,9996) e os limites de detecÃÃo (LD) e de quantificaÃÃo (LQ) calculados foram 1,9910 x 10â7 mol Lâ1 e 6,6367 x 10â7 mol Lâ1, respectivamente, sendo comparÃveis aos citados na literatura. A repetibilidade e a reprodutibilidade do procedimento proposto foram avaliadas. Os valores de desvio padrÃo relativo (DPR) obtidos foram 4,33% e 3,49%, respectivamente, evidenciando a precisÃo da metodologia. O percentual de recuperaÃÃo foi de 98,56% para amostra de Ãgua e 94,05% para amostra de carne bovina (DPR de 0,40 e 1,55% respectivamente). O eletrodo modificado desenvolvido apresentou sensibilidade, reprodutibilidade e repetibilidade adequados, bem como valores de LD e LQ concordantes com os relatados na literatura. Os resultados obtidos pelo emprego do CV/NpAu/NTCPMf-FcCo se mostraram muito eficientes quanto à detecÃÃo e recuperaÃÃo de DES, mostrando-se, desse modo, um dispositivo promissor na detecÃÃo e na quantificaÃÃo de DES em amostras de Ãgua e alimentos.
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Arotiba, Omotayo Ademola. "Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_7669_1266190932.

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In this thesis, I present the electrochemical studies of three dendrimeric polypropylene imine (PPI) nanomaterials and their applications as a platform in the development of a novel label free DNA nanobiosensor based on electrochemical impedance spectroscopy. Cyclic voltammetry (CV), differentia pulse voltammetry (DPV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS) techniques were used to study and model the electrochemical reactivities of the nanomaterials on glassy carbon electrode (GCE) as the working electrode.

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Naidoo, Fayyaadh. "Graphene modified Salen ligands for the electrochemical determination of heavy metal ions." University of Western Cape, 2020. http://hdl.handle.net/11394/7540.

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>Magister Scientiae - MSc
Environmental pollution is a major threat to all life, which needs to be addressed. Heavy metals are well-known environmental pollutants due to their toxicity and, persistence in the environment toxicity for living organisms and having a bioaccumulative nature. Environmentally, the most common hazardous heavy metals are: Cr, Ni, Cu, Zn, Cd, Pb, Hg, and As. Remediation using conventional physical and chemical methods is uneconomical and generates waste chemicals in large quantities. This study focuses on the extraction and determination of heavy metals (Nickel, Copper and Cobalt) by chelating Schiff base ligands of the type [O,N,N,O] with these metal ions. Two Schiff base ligands [N,N’-ethylenebis(salicylimine)] (Salen) and ligand [1,3-bis(salicylideneamino)-2-propanol] (Sal-DAP) were synthesized and characterised using FTIR, 1H and 13C NMR spectrometry and GC-MS techniques. Electrochemical detection of heavy metal ions in this work was achieved via ligand-metal complexation via two approaches. The in-situ method in which the metal and ligands were added to the electrochemical cell and stirred to allow complexation to occur and monitored by square wave voltammetry. While the ex-situ approach involved modifying the electrode surface by depositing a thin film of Schiff base on the electrode surface and immersed into a heavy metal solution to allow the complexation. Three modified GCE were used viz. Salen coated GCE, reduced graphene oxide-Salen coated GCE and a nafion-Salen coated GCE. The two approaches used for the electrochemical detection were successful and effective. The ex-situ approach was selected for the modification of the electrode surface since it demonstrated a higher capacity for heavy metal ion extraction.
2021-11-30
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Books on the topic "Glassy Carbon Electrode"

1

Gattrell, Michael Albert. The aqueous electrooxidation of pphenol at a glassy carbon electrode. 1986.

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Book chapters on the topic "Glassy Carbon Electrode"

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Capoferri, Denise, Michele Del Carlo, Nomaphelo Ntshongontshi, Emmanuel I. Iwuoha, and Dario Compagnone. "Electrochemical Preparation of a MIP-Glassy Carbon Electrode for the Determination of Dimethoate." In Lecture Notes in Electrical Engineering, 157–62. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-55077-0_21.

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Sharma, Vivek Vishal, and Domenica Tonelli. "Sensors for Electrochemical Determination of Various Oxidizable Analytes with a Graphene Oxide (GO) and/or Multi Walled Carbon Nanotubes (MWCNTs) Modified Glassy Carbon Electrode." In NATO Science for Peace and Security Series A: Chemistry and Biology, 301–6. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1113-3_21.

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Barbin, N. M., V. N. Necrasov, D. I. Terentiev, and A. P. Pekar. "Influence of a Gaseous Atmosphere on Anodic Processes of Glassy-Carbon and Gold Electrodes in NaCl-KCl-Na2CO3 Melt." In Refractory Metals in Molten Salts, 173–82. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9135-5_17.

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Zhang, Guangan, Liping Wang, Pengxun Yan, and Junyan Zhang. "Diamond-Like Carbon Thin Films Deposition on Glass Using an Electron Cyclotron Resonance (ECR) Microwave Chemical Vapor Deposition (CVD) System." In Advanced Tribology, 816–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_270.

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Narasaiah, D. "An enzyme electrode for hydrogen peroxide based on peroxidase immobilized on glassy carbon electrode." In Biosensors '92 Proceedings, 211. Elsevier, 1992. http://dx.doi.org/10.1016/b978-1-85617-161-8.50044-6.

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Prete, Maiyara Carolyne, Luana Rianne Rocha, and César Ricardo Teixeira Tarley. "Development of new electroanalytical method based on graphene oxide-modified glassy carbon electrode for mephedrone illicit drug determination." In Carbon Nanomaterials-Based Sensors, 43–56. Elsevier, 2022. http://dx.doi.org/10.1016/b978-0-323-91174-0.00022-6.

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Naik, Keerti M., and Sharanappa T. Nandibewoor. "An Advanced Study on Electrochemical Behavior of Chalcone at a Glassy Carbon Electrode and Its Analytical Applications." In Current Perspectives on Chemical Sciences Vol. 7, 89–102. Book Publisher International (a part of SCIENCEDOMAIN International), 2021. http://dx.doi.org/10.9734/bpi/cpcs/v7/6460d.

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Gabry Barbosa, Thiago, Ana Elisa Ferreira Oliveira, and Arnaldo César Pereira. "An Electrochemical Sensor Based on Electroreduction of Graphene Oxide on a Glassy Carbon Electrode Using Multiple Pulse Amperometry for Simultaneous Determination of L-Dopa and Benserazide." In Graphene Production and Application. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.89685.

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Tiefenauer, L. X., and U. R. Achtnich. "Avidin modified glassy carbon electrodes: Towards a multivalent immunosensor." In Biosensors '92 Proceedings, 274–78. Elsevier, 1992. http://dx.doi.org/10.1016/b978-1-85617-161-8.50083-5.

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"Electro-Chemical Doping of Glassy Carbon by Deposition of Graphene Layers." In Catalytic Science Series, 173–95. WORLD SCIENTIFIC (EUROPE), 2017. http://dx.doi.org/10.1142/9781786342447_0010.

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Conference papers on the topic "Glassy Carbon Electrode"

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Dawoud, Abdulilah A. "Fabrication of Fully Integrated Microfluidic Device With Carbon Sensing Electrode for the Detection of Forensic and Biomedical Targets." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41454.

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Fabrication of fully integrated capillary electrophoresis (CE)-based microfluidic device with integrated carbon sensing electrode is described in this paper. A combination of microfabrication protocols were employed for fabricating the hybrid PDMS/glass microfluidic device including chemical wet etching, soft lithography, and micromolding techniques. The microdevice is comprised of glass substrate with integrated gold electrodes and carbon sensing electrode, and polydimethyl siloxane (PDMS) slab that encompasses the microchannels network. The carbon sensing electrode was physically characterized via atomic force microscopy (AFM) and Raman spectrometry. In addition, its quality was evaluated electrochemically and compared to commercial glassy carbon electrodes upon performing cyclic voltammetric analysis of two illicit drugs, morphine and codeine. The analytical performance of the stand-alone microdevice was evaluated upon testing the injection, separation and amperometric detection on the carbon sensing electrode. The carbon sensing electrode provides stable background current during applying high sensing potential, which is of particular necessity for sensing molecules that can be only detected at high potentials including morphine and codeine.
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Compagnone, D., M. Del Carlo, D. Innocenzi, F. Arduini, L. Agui, and V. Serafin. "Carbon Black modified glassy carbon electrode for the detection of antioxidants compounds." In 2015 XVIII AISEM Annual Conference. IEEE, 2015. http://dx.doi.org/10.1109/aisem.2015.7066853.

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Cebula, Zofia, Paweł Niedziałkowski, and Tadeusz Ossowski. "Electrochemical behavior and determination of ketoprofen at glassy--carbon electrode." In The Second Doctoral Conference of Natural Sciences in University of Gdańsk. Institute of Biotechnology and Molecular Medicine Foundation, 2018. http://dx.doi.org/10.31708/spi3.2018/ceb.cns18.

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Xu, Laihui, Liping Lu, Zhao Gao, Tianfang Kang, and Shuiyuan Cheng. "DNA Biosensor Based on the CdS Modified Glassy Carbon Electrode." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781421.

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Cheng, Hao, and Shaotong Jiang. "Preparation and Application of Graphene Modified Heated Glassy Carbon Electrode." In 2nd International Conference on Civil, Materials and Environmental Sciences. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/cmes-15.2015.109.

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Chuekachang, Sopis, Viruntachar Kruefu, Suwan Chaiyasit, and Sukon Phanichphant. "Single-wall carbon nanotube modified glassy carbon electrode for electroanalytical determination of dopamine." In 2010 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS 2010). IEEE, 2010. http://dx.doi.org/10.1109/nems.2010.5592167.

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Ye, Zhou, Junbo Hou, Michael W. Ellis, and Bahareh Behkam. "Effect of Anode Surface Roughness on Power Generation in Microbial Fuel Cells." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-88643.

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A three-electrode system was used to study the effect of anode surface roughness on the performance of microbial fuel cells (MFCs). Two glassy carbon plates were polished to uniform roughness of the orders of magnitude of 10s of nm and 100s of nm. Atomic force microscopy (AFM) was used to quantify the roughness as well as the 3D topography of the surfaces. Multiple electrochemical methods including potentiostatic tests, potentiodynamic tests, and electrochemical impedance spectroscopy (EIS) were utilized to monitor the performance of the glassy carbon electrodes. After 275 hours of experimentation, the current density generated by the rough electrode was much higher than that generated by the smooth one. Furthermore, the charge-transfer resistance of the rough electrode was lower than that of the smooth one. The better electrochemical performance of the rough surface may be due to denser biofilm grown on the surface, which was observed by scanning electron microscopy (SEM).
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Chihava, Ruvimbo, Mambo Moyo, and Munyaradzi Shumba. "Impedimetric Determination of Antiretroviral Drugs on a Modified Glassy Carbon Electrode." In 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589692.

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Maikap, A., K. Mukherjee, N. Mandal, and B. Mondal. "Electrochemical detection of phenolic compounds using tyrosinase modified glassy carbon electrode." In Proceedings of the International Conference on Nanotechnology for Better Living. Singapore: Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-09-7519-7nbl16-rps-33.

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Negrea, Sorina Claudia, Lidia Ani Diaconu, Valeria Nicorescu, Daniel Gabriel Neidoni, Adina Pacala, Sorina Motoc, and Florica Manea. "ELECTROCHEMICAL DETECTION OF CAPECITABINE USING AN AG/ GRAPHENE / GLASSY CARBON ELECTRODE." In International Symposium "The Environment and the Industry". National Research and Development institute for Industrial Ecology, 2021. http://dx.doi.org/10.21698/simi.2021.ab41.

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