Sensors and Actuators B: Chemical, ( ISI ), Volume (259), No (1), Year (2018-1) , Pages (133-141)

Title : ( Fabrication of a new electrochemical imprinted sensor fordetermination of ketamine based on modified polytyramine/sol-gel/f-MWCNTs@AuNPs nanocomposite/pencilgraphite electrode )

Authors: behjat deiminiat , Glamhossein Ronagi ,

Citation: BibTeX | EndNote

Abstract

This paper proposes a new strategy for measurement of ketamine through one-step electropolymeriza-tion of the molecularly imprinted polymer (MIP) composed of polytyramine (pty), sol-gel, functionalizedmultiwall carbon nanotubes@gold nanoparticles (f-MWCNTs@AuNPs) nanocomposite and ketamine ona pencil graphite electrode (PGE) by cyclic voltammetric (CV) technique. F-MWCNTs@AuNPs nanocom-posite was entrapped within the polymer network to enhance the electron transfer rate and sensitivityof the fabricated sensor. The f-MWCNTs@AuNPs nanocomposite was synthesized by the chemical reduc-tion method and its structure characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive X-ray analysis (EDX). The electrochemical behavior of the modified elec-trode was investigated using cyclic voltammetry, electrochemical impedance spectroscopy (EIS) andsquare wave voltammetry (SWV) techniques. Under the optimized experimental conditions, the cali-bration curve of the MIP electrode was plotted and two dynamic linear ranges from 1.0 to 50.0 nM and50.0–1000.0 nM, with a limit of detection (LOD) of 0.7 nM were obtained for quantitative measurementof ketamine in solution. The obtained results show that the proposed sensor has an excellent stabil-ity, good reproducibility and repeatability, and high sensitivity and selectivity towards the ketaminemolecules. Furthermore, the electrochemical imprinted sensor was successfully applied for determina-tion of ketamine in biological samples with satisfactory results.

Keywords

, Ketamine, Molecularly imprinted polymer, Polytyramine, Sol-gel, f-MWCNTs @AuNPs nanocomposite
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@article{paperid:1066033,
author = {Deiminiat, Behjat and Ronagi, Glamhossein},
title = {Fabrication of a new electrochemical imprinted sensor fordetermination of ketamine based on modified polytyramine/sol-gel/f-MWCNTs@AuNPs nanocomposite/pencilgraphite electrode},
journal = {Sensors and Actuators B: Chemical},
year = {2018},
volume = {259},
number = {1},
month = {January},
issn = {0925-4005},
pages = {133--141},
numpages = {8},
keywords = {Ketamine; Molecularly imprinted polymer; Polytyramine; Sol-gel; f-MWCNTs @AuNPs nanocomposite},
}

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%0 Journal Article
%T Fabrication of a new electrochemical imprinted sensor fordetermination of ketamine based on modified polytyramine/sol-gel/f-MWCNTs@AuNPs nanocomposite/pencilgraphite electrode
%A Deiminiat, Behjat
%A Ronagi, Glamhossein
%J Sensors and Actuators B: Chemical
%@ 0925-4005
%D 2018

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