Title of article
The Application of 2,6-Dichlorophenolindophenol-Functionalized Carbon nanotubes for Electrocatalytic Determination of Sulfide Ions
Author/Authors
Mohadesi, Alireza Department of Chemistry - Payame Noor University, Tehran , Parvaresh, Somayeh Department of Chemistry - Payame Noor University, Tehran , Eshaghi, Zarrin Department of Chemistry - Payame Noor University, Tehran , Karimi, Mohammad Ali Department of Chemistry - Payame Noor University, Tehran
Pages
10
From page
37
To page
46
Abstract
A chemically modified glassy carbon electrode was developed using multi-walled carbon nanotubes covalently
immobilized with 2,6-dichlorophenolindophenol. The immobilization of 2,6-dichlorophenolindophenol with
multi-walled carbon nanotubes was characterized by UV–visible absorption spectroscopy and Fourier transform
infrared spectroscopy, and was determined using cyclic voltammetry. The cyclic voltammetric response of 2,6-
dichlorophenolindophenol grafted onto multi-walled carbon nanotubes indicated that it promoted the
electrocatalytic, sensitive and stable determination of sulfide ions. Meanwhile, the dependence of response
currents on the concentration of sulfide was also examined and was linear in the range of 1.8 μM – 2.5 mM. The
detection limit of sulfide was 1.1 μM, and RSD for 10 and 1000 μM sulfide was 1.8 and 1.3 %, respectively.
Many interfering species had little or no effect on the determination of sulfide. This procedure was applied for
determination of sulfide in water samples.
Keywords
2,6-Dichlorophenolindophenol , Sulfide , Carbon Nanotubes , Electrocatalysis , Functionalization
Journal title
Iranian Journal of Analytical Chemistry
Serial Year
2020
Record number
2703516
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