Abstract

Graphene-gold -single walled carbon nanotubes nanocomposites (AuNPs/GN-SWCNT) were synthesized through a simple one-step process, and were used to modify working electrode sensing platform. The nanocomposites were characterized using X-ray Diffraction (XRD, Scanning Electron Microscope (SEM), energy dispersive spectroscopy (EDX), cyclic voltammetry and electrochemical impedance spectroscopy. The nanocomposite material after immobilization on glassy carbon electrode showed excellent catalytic properties towards propranolol. The electrocatalytic effect for oxidation of propranolol was reflected by a significant increase of the peak current with a significant shift in peak potential toward lower oxidation potential as compared with the unmodified electrode. The detection limit for propranolol was found to be 0.04 × 10"“6µA/µM of propranolol with linear correlation coefficient R 2 = 0.996

Department(s)

Chemistry and Biochemistry

Document Type

Article

Rights Information

This article is licensed under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) License.

Keywords

propranolol, gold nanoparticle, reduced graphene, carbon nanotubes cyclic voltammetry, amperometry

Publication Date

2013

Journal Title

Chemistry and Materials Research

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