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Title
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Preparation, characterization and electrochemical application of ZnO-CuO nanoplates for voltammetric determination of captopril and tryptophan using modified carbon paste electrode
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Type
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JournalPaper
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Keywords
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Captopril, Tryptophan, ZnO-CuO nanoplates, Voltammetry, Carbon paste electrode
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Abstract
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2-chlorobenzoyl ferrocene, was synthesized and used to construct a modified ZnO-CuO nanoplates modified carbon paste electrode. The electrooxidation of captopril at the surface of the modified electrode was studied. Under the optimized conditions, the square wave voltammetric (SWV) peak current of captopril increased linearly with captopril concentration in the range of 5.0× 10¢7 to 9.0×10¢4M and detection limit of 90.0 nM wasobtained for captopril. The diffusion coefficient and kinetic parameters (such as electron transfer coefficient and the heterogeneous rate constant) for captopril oxidation were also determined. The prepared modified electrode exhibits a very good resolution between the voltammetric peaks of captopril and tryptophan which makes it suitable for the detection of captopril in the presence of tryptophan in real samples.
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Researchers
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Rahman Hosseinzadeh (Fourth Researcher), Reza Alizadeh (Third Researcher), Susan Ghofrani Ivari (Second Researcher), Hadi Beitollahi (First Researcher)
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