Sensitive Voltammetric Determination of Captopril Using a Carbon Paste Electrode Modified with Nano-TiO2/Ferrocene Carboxylic Acid

Raoof, Jahan Bakhsh; Ojani, Reza; Baghayeri, Mehdi

doi:10.1016/s1872-2067(10)60268-9

Cited by 44 publications

(23 citation statements)

References 42 publications

(37 reference statements)

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“…The overall oxidative reaction process can, therefore, be attributed to first initial one electron, one proton oxidation of TSA (RSH) to generate the radical species RS • , which can further undergo rapid dimerization to form the disulfide (RSSR). Similar behavior was reported previously for other sulfhydryl compounds, e.g., captopril, thiouracil and cysteine [36][37][38][39]. a Dependence of peak current I p /lA on the scan rate t/V s -1 .…”

Section: Oxidation Mechanismsupporting

confidence: 82%

Voltammetric Response and Determination of an Anti‐Inflammatory Drug at a Cationic Surfactant‐Modified Glassy Carbon Electrode

Nayak

Shetti

2016

J Surfact & Detergents

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Electrochemical oxidation of thiosalicylic acid in the presence of cationic surfactant, cetyl trimethylammonium bromide (CTAB), at a glassy carbon electrode was investigated. The electrochemical response of a modified sensor towards thiosalicylic acid determination was studied by the means of cyclic voltammetry, linear sweep voltammetry and differential pulse voltammetry (DPV). The liquid phase oxidation of thiosalicylic acid in the presence of CTAB leads to a notable enhancement in the peak current and a lowering of the peak potential. The electrochemical process was observed to be adsorption‐controlled, irreversible and involves oxidation of one electron. Effects of anodic peak potential (Ep), anodic peak current (Ipa) and heterogeneous rate constant (k0) were calculated. The linear response was obtained in the range of 1.0 µM–1.0 mM with a detection limit of 113 nM.

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Section: Oxidation Mechanismsupporting

confidence: 82%

Voltammetric Response and Determination of an Anti‐Inflammatory Drug at a Cationic Surfactant‐Modified Glassy Carbon Electrode

Nayak

Shetti

2016

J Surfact & Detergents

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“…TiO 2 nanoparticles have excellent chemical and physical properties; they have been used in the sensor preparation, coating, solar cell, and photocatalyst applications. 16,17 These nanoparticles have been incorporated with other compounds, such as graphite and carbon nanotubes, to make modified electrodes in the electrochemical analysis of some biological compounds, [18][19][20][21][22] because they provide more active sites at the surface of the electrode. TiO 2 nanoparticles can be used in wide potential windows and improve the stability of the electrode, therefore, increase the repeatability of the electrode response.…”

Section: Introductionmentioning

confidence: 99%

A Sensitive Voltammetric Determination of Anti-Parkinson Drug Pramipexole Using Titanium Dioxide Nanoparticles Modified Carbon Paste Electrode

Hassaninejad–Darzi¹,

Shajie²

2016

Journal of the Brazilian Chemical Society

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In this study, a facile sensor based on TiO 2 nanoparticles modified carbon paste electrode was developed for voltammetric determination of pramipexole in pharmaceutical formulations and biological samples. Surface of the fabricated electrode have been characterized using field emission scanning electron microscopy. Under the optimized experimental conditions, the modified electrode was exhibited excellent electrocatalytic activities and a sensitive oxidation peak at 0.9 V in the phosphate solution of pH 5.0 for electrooxidation of pramipexole. The plot of pH vs. E p generated a slope of 62.5 mV per pH in the pH range of 3.0-13.0 indicating the contribution of an equal number of electrons and protons in the electrode process. A differential pulse voltammetry method was developed in the concentration range of 0.46-100 µmol L −1 with a limit of detection of 0.14 µmol L −1. The proposed method is simple, rapid, and inexpensive and also showed good selectivity and sensitivity toward pramipexole.

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“…TiO 2 nanoparticles have excellent chemical and physical properties; they have been used in sensor preparation, coating, solar cell, and photocatalyst applications [22,23]. TiO 2 nanoparticles have been incorporated with other compounds such as graphite and carbon nanotubes to make modified electrodes in the electrochemical analysis of some biologically important compounds [24][25][26][27][28], because they provide more active sites at the electrode surface. TiO 2 can be used in wide potential windows (instead of Au-nanoparticles), and improves the stability of the electrode, therefore increases the repeatability of the electrode response.…”

Section: Introductionmentioning

confidence: 99%

Application of ionic liquid–TiO2 nanoparticle modified carbon paste electrode for the voltammetric determination of benserazide in biological samples

Ensafi

Bahrami

Rezaei

et al. 2013

Materials Science and Engineering: C

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Sensitive Voltammetric Determination of Captopril Using a Carbon Paste Electrode Modified with Nano-TiO2/Ferrocene Carboxylic Acid

Cited by 44 publications

References 42 publications

Voltammetric Response and Determination of an Anti‐Inflammatory Drug at a Cationic Surfactant‐Modified Glassy Carbon Electrode

Voltammetric Response and Determination of an Anti‐Inflammatory Drug at a Cationic Surfactant‐Modified Glassy Carbon Electrode

A Sensitive Voltammetric Determination of Anti-Parkinson Drug Pramipexole Using Titanium Dioxide Nanoparticles Modified Carbon Paste Electrode

Application of ionic liquid–TiO2 nanoparticle modified carbon paste electrode for the voltammetric determination of benserazide in biological samples

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