Electrocatalysis and determination of pyridine-2-aldoxime methochloride using carbon nanotube-modified gold electrode

Author

Jos, T. ; Issac, S. ; Joseph, Rex ; Rajith, L. ; Girish Kumar, K.

Author_Institution

Dept. of Appl. Chem., Cochin Univ. of Sci. & Technol., Kochi, India

Volume

7

Issue

8

fYear

2012

fDate

8/1/2012 12:00:00 AM

Firstpage

854

Lastpage

858

Abstract

A multi-walled carbon nanotube-modified gold electrode (MWCNT/Au) was prepared and its external morphology was characterised by scanning electron microscope and surface area study. The electrochemical behaviour of pyridine-2-aldoxime methochloride (PAM chloride) at this electrode was examined by square wave voltammetry. At the MWCNT/Au electrode, PAM chloride exhibited a well-defined anodic peak at 584 mV in pH 8 phosphate buffer solution with a 15 times enhancement in anodic peak current. The peak current was linear to PAM chloride concentration over the range of 8 × 10^-7-1 × 10^-5 M with a detection limit of 1 × 10^-7 M. The MWCNT/Au electrode showed good stability, selectivity and can be used to quantify PAM chloride in a urine sample.

Keywords

carbon nanotubes; catalysis; electrochemical electrodes; gold; organic compounds; scanning electron microscopy; surface morphology; voltammetry (chemical analysis); C-Au; PAM chloride concentration; anodic peak current; detection limit; electrocatalysis; electrochemical behaviour; external morphology; multiwalled carbon nanotube-modified gold electrode; phosphate buffer solution; pyridine-2-aldoxime methochloride; scanning electron microscopy; square wave voltammetry; surface area; urine sample; voltage 584 mV;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2012.0527

Filename

6294623