Title of article
rGO/ZnO Nanocomposite Modified Carbon Paste Electrode as Sensor for Tyrosine Analysis
Author/Authors
Karami, Zahra Department of Chemistry - Shahid Bahonar University, Kerman , Sheikhshoaie, Iran Department of Chemistry - Shahid Bahonar University, Kerman
Pages
7
From page
834
To page
840
Abstract
Tyrosine is an important amino acid with wide application in human body. So, we try for fabrication of a fast electrochemical tyrosine sensor based on carbon paste electrode modified with reduced graphene oxide/ZnO nanocomposite (rGO/ZnO-NC/CPE). In the first step, we synthesized rGO/ZnO by chemical precipitation method and characterized by SEM and EDAX methods. The rGO/ZnO-NC/CPE showed highly catalytic activity to tyrosine electro-oxidation in aqueous solution. The anodic peak current of tyrosine increased with concentration of this amino acid in the ranges of 0.1–400 μM with limit of detection ~0.07 μM. The performance of rGO/ZnO-NC/CPE was check for the analysis of tyrosine in water and pharmaceutical serum samples
Keywords
Tyrosine , Reduced graphene oxide/ZnO nanocomposite , Voltanetry , Senso
Journal title
Astroparticle Physics
Serial Year
2017
Record number
2418826
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