Abstract

Khoorshid Mehdizadeh¹, Masoud Giahi²*, Hossein Aghaie³, Majid Monajjemi³

 

DOI : http://dx.doi.org/10.13005/ojc/310212

The present research explores the design and manufacture of coated ion-selective membranes  on graphite electrodes with selectivity towards silver cations.Single- walled carbon nanotube N-6- aminohexylamide ,was used as the ionophore.The electrode was manufactured in a concentration range of 1×10^-6to1×10^-2 , , resulting in a Nernst response with a gradient of 59.1±0.5 mv/decade . In this work, the effects of membrane composition, pH of the solution, temperature and non-aqueous environment were investigated on the performance of the electrodes Furthermore, the response time of the electrode and the electrode response reversibility were calculated using both static and dynamic methods. This electrode can be applied in ethanol environments of up to 25% and in dioxane environments of up to 25% volume-volume without hindrance. The electrode response time was less than 18 seconds.

Carbon Nanotube; Ion-Selective; Graphite Electrode; N-6-Aminohexylamide

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