Electrocatalysis and determination of pyridine-2-aldoxime methochloride using carbon nanotube-modified gold electrode

Jos, Theresa; Issac, Sindhu; Joseph, Renjini; Rajith, Leena; Kumar, Krishnapillai Girish

doi:10.1049/mnl.2012.0527

Cited by 11 publications

(8 citation statements)

References 31 publications

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“…An irreversible oxidation peak was observed at the GCE/PAM (curve b) and GCE/GQDs/PAM (curve d). The oxidation peak corresponded to the electrochemical oxidation of the aldoxime group of PAM to carbonyl group via a two-electron-transfer mechanism, which has been detailed discussed by previous literatures [15,16]. Compared with bare GCE, the oxidation potential of PAM at GCE/GQDs/PAM negatively shifted from +0.76 V to +0.71 V, and the oxidation current enhanced significantly.…”

Section: Electrochemical Characterization Of Proposed Sensormentioning

confidence: 64%

“…By means of the favorable film-forming ability of chitosan, GQDs were uniformly immobilized on GCE. The net charges of carboxyl group on GQDs appear to be negative while the nitrogen atom on the pyridine ring of PAM appears to be positive [15,16], thus plenty of PAM molecules can be adsorbed on GQDs film due to electrostatic attraction. In addition, the p-p stacking interaction between GQDs and pyridine rings will increase the adsorption capacity and stability of immobilized PAM.…”

Section: Sensor Fabrication and Detection Principlementioning

confidence: 99%

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Innovative approach for the electrochemical detection of non-electroactive organophosphorus pesticides using oxime as electroactive probe

Dong

Hou

Jiang

et al. 2015

Analytica Chimica Acta

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Section: Electrochemical Characterization Of Proposed Sensormentioning

confidence: 64%

Section: Sensor Fabrication and Detection Principlementioning

confidence: 99%

Innovative approach for the electrochemical detection of non-electroactive organophosphorus pesticides using oxime as electroactive probe

Dong

Hou

Jiang

et al. 2015

Analytica Chimica Acta

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“…1a, b) using 1.0 × 10 −3 M K 3 Fe(CN) 6 as a redox probe containing 0.1 M KCl at different scan rates. For a reversible process, according to Randles -Sevick equation, the anodic peak current i p is linear to square root of scan rate(υ 1/2 ) (Jos et al 2012).…”

Section: Surface Area Studiesmentioning

confidence: 99%

“…Among the various electrochemical methods, Square wave voltammetric (SWV) technique is a very sensitive method widely used for trace analysis of analytes (Mirceski and Gulaboski 2014). The facility of electron transfer between the electro active species and the electrodes offer great promise for fabricating electrochemical sensors and biosensors Jos et al 2012). Still there are only few reports available in literature for the determination of food additives, colorants, antioxidants, emulsifiers etc.…”

Section: Introductionmentioning

confidence: 99%

Manganese porphyrin sensor for the determination of bromate

et al. 2015

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The electro reductive behavior and determination of bromate on [5, 10, 15, 20-tetrakis (4-methoxyphenylporphyrinato] Manganese (III) chloride (TMOPPMn(III)Cl) modified Gold electrode(GE) was investigated by Square wave voltammetry (SWV). Bromate showed an irreversible reduction peak at -164 mV in 0.1 M pH 7 Na2SO4 solution. The cathodic peak of bromate showed a reduction in potential of 88 mV on modifying GE with a porphyrin film. The peak current varied linearly with concentration with a detection limit of 3.56 × 10(-9) M. The influence of pH, scan rate, supporting electrolyte and interferents on the reduction peak current of bromate were studied. The developed sensor was proposed for the determination of bromate in bread samples and compared with the standard method.

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“…Nanostructures have been progressively important in electrochemical researches [16][17][18][19][20]. Some unique properties can be considered in nanostructured materials, for example, catalysis, the large surface-to-volume ratio and more adsorption sites [21,22].…”

mentioning

confidence: 99%

Electrochemical quantification of fluoxetine in pharmaceutical formulation using carbon nanoparticles

et al. 2013

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A sensitive electrochemical sensor is formed by a carbon nanoparticles (CNPs)/glassy carbon electrode for the determination of antidepressant drug fluoxetine in pharmaceutical formulation. The dependence of fluoxetine electro-oxidation currents and potentials on pH concentration and the potential scan rate was studied. Scanning electron microscopy was used for characterisation of the CNPs. The porous layer of the CNPs improved the electroactive surface area and led to a significant increasing in the peak currents, based on the diffusion within a nanoporous film. The best electrochemical response was obtained from differential pulse voltammograms in the buffer solution (pH 9.0). Linear calibration graphs were obtained in 1-25 µM with %RSD values from 0.3 to 5.7 and the detection limit of 0.4 µM (S/N = 3). The CNPs modified electrode was successfully applied for fluoxetine determination in capsules and the results showed sufficient precision and achieved a mean recovery accuracy of 99.06%.

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Electrocatalysis and determination of pyridine-2-aldoxime methochloride using carbon nanotube-modified gold electrode

Cited by 11 publications

References 31 publications

Innovative approach for the electrochemical detection of non-electroactive organophosphorus pesticides using oxime as electroactive probe

Innovative approach for the electrochemical detection of non-electroactive organophosphorus pesticides using oxime as electroactive probe

Manganese porphyrin sensor for the determination of bromate

Electrochemical quantification of fluoxetine in pharmaceutical formulation using carbon nanoparticles

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