Optimization of Pyrrole Electropolymerization on a Steel Gauze Electrode Using the Cyclic Voltammetry Method

2019 ◽  
Vol 811 ◽  
pp. 133-138
Author(s):  
Yulia Sukmawardani ◽  
Ihsanawati ◽  
Buchari Buchari
Keyword(s):  
Cyclic Voltammetry ◽  
Phosphate Buffer ◽  
Chloride Solution ◽  
Electrochemical Analysis ◽  
Electroactive Polymer ◽  
Potential Range ◽  
Potassium Chloride Solution ◽  
Preliminary Step ◽  
Scan Rate ◽  
Cyclic Voltammetry Method

Study on pyrrole electropolymerization is the preliminary step in synthesizing polypyrrole membranes, which can be used for various purposes in biosensor. In this work, electropolymerization process and electrochemical analysis of polypyrrole as an electroactive polymer have been studied by cyclic voltammetry. Pyrrole was electropolymerized to form polypyrrole in an aqueous potassium chloride solution at different pHs using phosphate buffer. The results showed that a potential range of 0-1200 mV is suitable for polypyrrole electropolymerization using the Ag|AgCl electrode as the reference. The formation of polypyrrole is stable at a scan rate of 100 mV/s. In addition, the optimized pyrrole electropolymerization was obtained using 0.1 M pyrrole and phosphate buffer at pH of 2-6. Taken together, this study can be used as a reference for the synthesis of other conducting polymers.

THE DEVELOPMENT OF GLUCOSE SENSOR BASED ON SiO2-CuO MATERIALS USING SCREEN PRINTED CARBON ELECTRODE (SPCE)

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Intan Frina Utamiyanti
Keyword(s):  
Cyclic Voltammetry ◽  
Glucose Sensor ◽  
Reference Electrode ◽  
Synthesis Process ◽  
Potential Range ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Cyclic Voltammetry Method ◽  
Cyclic Voltammetry Analysis ◽  
Screen Printed

<p>The development of material-based glucose sensor SiO<sub>2</sub>-CuO using Screen Printed Carbon Electrode (SPCE) had been done. Three types of materials were used to detect glucose, i.e Multi Wall Carbon Nanotube (MWCNT)-SiO2-CuO, SiO2-CuO (A) dan SiO2-CuO (B). The differences composition of SiO<sub>2</sub>-CuO(A) and SiO<sub>2</sub>-CuO(B) occurred during the addition of NaOH in synthesis process of SiO2-CuO (B). The prepared materials were analyzed by Scanning Electron Microscopy (SEM), cyclic voltammetry method and chrono-amperometry. Cyclic voltammetry analysis was conducted at a potential range of -1.0 - 1.5 V with Ag/AgCl as reference electrode. The scan rate was 100 mV/sec and the potential was varied at (-0.6), (-0.5) and (-0.4) V, in which the duration of each analysis was 5 second. Based on the result of analysis, whether by SEM, cyclic voltammetry and chrono-amperometry, the SiO<sub>2</sub>-CuO (B) was found to be the best material for detection of glucose.</p>

Selenium(IV) Electrochemistry on Silver: A Combined Electrochemical Quartz-Crystal Microbalance and Cyclic Voltammetric Investigation

2003 ◽  
Vol 68 (9) ◽  
pp. 1579-1595 ◽  
Author(s):  
Giovanni Pezzatini ◽  
Francesca Loglio ◽  
Massimo Innocenti ◽  
Maria Luisa Foresti
Keyword(s):  
Cyclic Voltammetry ◽  
Quartz Crystal Microbalance ◽  
Electrochemical Behavior ◽  
Quartz Crystal ◽  
Reduction Process ◽  
Electrochemical Quartz Crystal Microbalance ◽  
Potential Range ◽  
Cyclic Voltammetric ◽  
Scan Rate ◽  
Process Of Se

The electrochemical behavior of Se(IV) on silver was investigated by cyclic voltammetry and electrochemical quartz-crystal microbalance (EQCM) measurements. As already reported in the literature, Se(IV) electrochemistry is always complex, and on silver even more, due to the formation of a compound. Our results confirm that the reduction process of Se(IV) occurs through two reaction paths, Se(IV) → Se(0) and Se(IV) → Se(-II); the product Se(-II) then reacts with Se(IV) through a comproportionation reaction. The latter step leads to red Se that, according to the literature, is the only electroactive form of Se(0). The presence of the electroactive red Se is evident both in the negative range of potentials, through the reduction Se(0) → Se(-II), and in the less negative range of potentials, through the oxidation Se(0) → Se(IV). Moreover, our measurements pointed to the formation of a deposit that never redissolves. This deposit seems to be the electroinactive gray Se. The electrochemical behavior of Se(IV) was investigated in the whole potential range accessible on silver. Our results confirm the occurrence of competitive processes whose predominance depends on the scan rate, as well as on the potential limits of voltammetry. A detailed table with the processes occurring in different potential ranges was drawn up.

scholarly journals A Facile Electrochemical Analysis to Determine Antioxidant Activity of Bee Pollen

2013 ◽  
Vol 14 ◽  
pp. 31-38 ◽  
Author(s):  
Abdelkrim Rebiai ◽  
Touhami Lanez
Keyword(s):  
Antioxidant Activity ◽  
Cyclic Voltammetry ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Electrochemical Analysis ◽  
Polyphenolic Compounds ◽  
Bee Pollen ◽  
Cyclic Voltammetry Method ◽  
High Antioxidant Activity ◽  
Phenolic And Flavonoid

The aim of this study was to determine the phenolic and flavonoid content, and antioxidant properties of tow samples of bee pollen harvested from Algeria. The content of total polyphenolic compounds, flavonoids, and antioxidant activity by the cyclic voltammetry method were determined. The contents of polyphenolic compounds was 22.68 mg/g for the pollen from Blida and 21,9 mg/g for Tipaza pollen. High antioxidant activities were found for the cyclic voltammetry method, with values that ranged from 22,3 to 27,63 mg of AAE·g–1 pollen. The bee pollen of Blida showed high antioxidant activity probably due to the high content of polyphenolic compounds present in pollen.

scholarly journals THE DEVELOPMENT OF GLUCOSE SENSOR BASED ON SiO2-CuO MATERIALS USING SCREEN PRINTED CARBON ELECTRODE (SPCE)

2016 ◽  
Vol 12 (1) ◽  
pp. 50
Author(s):  
Intan Frina Utamiyanti ◽  
Barlah Rumhayati ◽  
Ani Mulyasuryani
Keyword(s):  
Cyclic Voltammetry ◽  
Glucose Sensor ◽  
Reference Electrode ◽  
Synthesis Process ◽  
Potential Range ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Cyclic Voltammetry Method ◽  
Cyclic Voltammetry Analysis ◽  
Screen Printed

The development of material-based glucose sensor SiO<sub>2</sub>-CuO using Screen Printed Carbon Electrode (SPCE) had been done. Three types of materials were used to detect glucose, i.e Multi Wall Carbon Nanotube (MWCNT)-SiO2-CuO, SiO2-CuO (A) dan SiO2-CuO (B). The differences composition of SiO<sub>2</sub>-CuO(A) and SiO<sub>2</sub>-CuO(B) occurred during the addition of NaOH in synthesis process of SiO2-CuO (B). The prepared materials were analyzed by Scanning Electron Microscopy (SEM), cyclic voltammetry method and chrono-amperometry. Cyclic voltammetry analysis was conducted at a potential range of -1.0 - 1.5 V with Ag/AgCl as reference electrode. The scan rate was 100 mV/sec and the potential was varied at (-0.6), (-0.5) and (-0.4) V, in which the duration of each analysis was 5 second. Based on the result of analysis, whether by SEM, cyclic voltammetry and chrono-amperometry, the SiO<sub>2</sub>-CuO (B) was found to be the best material for detection of glucose.

Laser Photocatalysis of the Chlorophyll Dye Using the Cyclic Voltammetry Method

2021 ◽  
Vol 882 ◽  
pp. 143-154
Author(s):  
Huda S. Alhasan
Keyword(s):  
Cyclic Voltammetry ◽  
Laser Light ◽  
Potential Range ◽  
Carbon Electrode ◽  
Total Chlorophyll ◽  
Tetrabutylammonium Perchlorate ◽  
Oxidation Peak ◽  
Solution Ph ◽  
Cyclic Voltammetry Method ◽  
Wide Potential

Cyclic voltammetry is a widely used technique in electrochemistry due to its simplicity and large amount of data and information that can be obtained. This study utilises this technique to study chlorophyll a and total chlorophyll (Tchl) alongside a laser light to induce photosynthesis. No oxidative peak was observed, regardless of the solution pH in either a dark or light environment when using a solution with an electrolyte of tetrabutylammonium perchlorate (TBAP) in both dichloromethane (DCM) and acetonitrile (MeCN), whereas in a solution of aqueous HCl a small anodic peak was observed. The concentration of the droplet of Tchl pigment on the surface of macro glassy carbon electrode (GCE) was increased, which resulted in a similar trend and the oxidation peak was observed to be slightly larger when in the presence of light. It was observed that the filtered solution of Tchl pigment produced a weaker signal than the unfiltered solution and there were slightly reduced oxidative peak currents when the concentration of VK1 was increased. were no observed changes in the peak charges or currents over a wide potential range (0.0, 0.2, 0.4, 0.6 and 0.8 V) in the presence or absence of light by using coulometry and amperometry methods, therefore, more information on the 3-D formation is required for the photoreduction processes.

The Redox and Optical Response of the Electrogrowth Film from a Mixture of 2,5-Bis[4-(p-Aminophenoxy)Phenylene]-1,3,4-Oxadiazole and Fluorene

2019 ◽  
Vol 826 ◽  
pp. 81-90
Author(s):  
Mariana Dana Damaceanu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Cyclic Voltammetry ◽  
Fluorescence Spectroscopy ◽  
Potential Range ◽  
Electrochemical Copolymerization ◽  
Scan Rate ◽  
Copolymer Structure ◽  
Film Characteristics ◽  
Scanning Electron

Electrochemical copolymerization of 2,5-bis[4-(p-aminophenoxy)phenylene]-1,3,4-oxadiazole (Ox) with fluorene (Fl) was carried out via consecutive multisweep cyclic voltammetry. The electrogrowth process was conducted in the potential range between 0 and 1.8 V, at a scan rate of 50 mV/s. The FTIR spectroscopy was used to solve the issues concerning the way of monomers linkage in the copolymer structure. A deep investigation of the electrogenerated copolymer film characteristics was performed by scanning electron microscopy, UV-Vis and fluorescence spectroscopy, and cyclic voltammetry.

Comparative Study between Two Polymers of Arylene-Vinylene Units: Electrochemical, Spectroscopic Characterization and Resistivity Measurements

2009 ◽  
Vol 609 ◽  
pp. 95-103 ◽  
Author(s):  
S. Mosbah ◽  
I. Zbiri ◽  
L. Bencharif
Keyword(s):  
Cyclic Voltammetry ◽  
Comparative Study ◽  
Organic Compounds ◽  
Platinum Electrode ◽  
Cyano Group ◽  
Spectroscopic Characterization ◽  
Linear Potential ◽  
Resistivity Measurements ◽  
Scan Rate ◽  
Cyclic Voltammetry Method

Two arylenevinylenes compounds formed with thienyl or furyl units substituted by a cyano group at the ethylene linkage were studied by direct anodic oxidation in CH2Cl2/Bu4NBF4 0,2M medium on platinum electrode using cyclic voltammetry method. By applying a sequential linear potential scan rate of 100 mV.s-1 between 0-1,6 V versus Ag /Ag+ (0,1 M) / CH2Cl2, these two organic compounds could be polymerized. The electrosynthetized conducting polymers were also prepared by potentiostatic method then characterized by IR and UV spectroscopies and their conductivity was evaluated.

scholarly journals Interaction of Mn(II) and Zn(II) with ciprofloxacin antibiotics

2021 ◽  
Vol 56 (4) ◽  
pp. 285-292
Author(s):  
HM Naseem Akhtar ◽  
MQ Ehsan
Keyword(s):  
Cyclic Voltammetry ◽  
Potassium Chloride ◽  
Chloride Solution ◽  
Redox Couple ◽  
Redox Behavior ◽  
Potassium Chloride Solution ◽  
Before And After

The aim of this study is to check the redox behavior of Mn (II) and Zn (II) metals before and after interaction with ciprofloxacin in potassium chloride solution by using cyclic voltammetry, chronoamperomety and chronocoulometry methods. Equimolar solutions of Mn (II) and ciprofloxacin were mixed to a ratio of 1:2 and that of Zn (II) and ciprofloxacin to a 1:1 ratio. The results showed that the redox couple involved in Mn (II) as well as Mn(II)-ciprofloxacin interaction systems are quasi-reversible. However, the Zn (II) systems showed reversibility and the Zn(II)-ciprofloxacin interaction was quasi-reversible. The results obtained from the chronoamperometric study showed that after interaction with ciprofloxacin the rate of electrolysis in the metal systems decreased. Bangladesh J. Sci. Ind. Res.56(4), 285-292, 2021

scholarly journals THE DEVELOPMENT OF GLUCOSE SENSOR BASED ON SiO2-CuO MATERIALS USING SCREEN PRINTED CARBON ELECTRODE (SPCE)

2016 ◽  
Vol 12 (1) ◽  
pp. 50
Author(s):  
Intan Frina Utamiyanti ◽  
Barlah Rumhayati ◽  
Ani Mulyasuryani
Keyword(s):  
Cyclic Voltammetry ◽  
Glucose Sensor ◽  
Reference Electrode ◽  
Synthesis Process ◽  
Potential Range ◽  
Carbon Electrode ◽  
Screen Printed Carbon Electrode ◽  
Cyclic Voltammetry Method ◽  
Cyclic Voltammetry Analysis ◽  
Screen Printed

The development of material-based glucose sensor SiO<sub>2</sub>-CuO using Screen Printed Carbon Electrode (SPCE) had been done. Three types of materials were used to detect glucose, i.e Multi Wall Carbon Nanotube (MWCNT)-SiO2-CuO, SiO2-CuO (A) dan SiO2-CuO (B). The differences composition of SiO<sub>2</sub>-CuO(A) and SiO<sub>2</sub>-CuO(B) occurred during the addition of NaOH in synthesis process of SiO2-CuO (B). The prepared materials were analyzed by Scanning Electron Microscopy (SEM), cyclic voltammetry method and chrono-amperometry. Cyclic voltammetry analysis was conducted at a potential range of -1.0 - 1.5 V with Ag/AgCl as reference electrode. The scan rate was 100 mV/sec and the potential was varied at (-0.6), (-0.5) and (-0.4) V, in which the duration of each analysis was 5 second. Based on the result of analysis, whether by SEM, cyclic voltammetry and chrono-amperometry, the SiO<sub>2</sub>-CuO (B) was found to be the best material for detection of glucose.

Concentration of Impurities during Melting of Snow Made from Secondary Sewage Effluent

1986 ◽  
Vol 18 (2) ◽  
pp. 151-156 ◽  
Author(s):  
R. Zapf-Gilje ◽  
S. O. Russell ◽  
D. S. Mavinic
Keyword(s):  
Potassium Chloride ◽  
Chloride Solution ◽  
Laboratory Experiments ◽  
Field Experiments ◽  
Low Cost ◽  
Sewage Effluent ◽  
Potassium Chloride Solution ◽  
Laboratory Results ◽  
Solution Field ◽  
Concentration Of Impurities

When snow is made from sewage effluent, the impurities become concentrated in the early melt leaving the later runoff relatively pure. This could provide a low cost method of separating nutrients from secondary sewage effluent. Laboratory experiments showed that the degree of concentration was largely independent of the number of melt freeze cycles or initial concentration of impurity in the snow. The first 20% of melt removed with it 65% of the phosphorus and 90% of the nitrogen from snow made from sewage effluent; and over 90% of potassium chloride from snow made from potassium chloride solution. Field experiments with a salt solution confirmed the laboratory results.

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