Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite
Graphite and its composites have gained considerable attention in electrochemical applications due to their excellent structural, electrical and chemical properties. In this study, a graphite paste electrode (GPE) modified with natural Na-bentonite (BGPE) is fabricated and utilized for the sensitive...
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2017-09-01
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doaj-8738349ae46c4c698884ff2836ec90842020-11-25T01:24:55ZengTurkish Chemical SocietyJournal of the Turkish Chemical Society, Section A: Chemistry2149-01202017-09-014393195210.18596/jotcsa.334999Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentoniteSinem Ortaboy0Istanbul UniversityGraphite and its composites have gained considerable attention in electrochemical applications due to their excellent structural, electrical and chemical properties. In this study, a graphite paste electrode (GPE) modified with natural Na-bentonite (BGPE) is fabricated and utilized for the sensitive determination of Lanaset Red G (LRG) which is a kind of azo containing metal complex dye. The BGPE shows excellent enhancement in peak currents as compared to that of the GPE. The detection limit of LRG is determined to be as low as 0.65±0.08 when utilizing the BGPE as the working electrode in square wave voltammetry experiments (SWV). The electrochemical behavior of LRG is also investigated using a cyclic voltammetry (CV) technique to propose reaction mechanisms. Effects of pH and scan rate on the electrochemical behavior of LRG are studied to calculate transfer coefficients, the number of protons and electrons transferred in the redox reaction. The results show that a quasi-reversible reaction occurs on the BGPE surface/electrolyte interface. The morphology and the chemical characterization of both BGPE and GPE electrodes are investigated by the atomic force microscopy (AFM) technique and the diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), respectively.http://dergipark.gov.tr/jotcsa/issue/30155/334999Voltammerysensitive determinationbentoniteazo dyegraphite |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Sinem Ortaboy |
spellingShingle |
Sinem Ortaboy Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite Journal of the Turkish Chemical Society, Section A: Chemistry Voltammery sensitive determination bentonite azo dye graphite |
author_facet |
Sinem Ortaboy |
author_sort |
Sinem Ortaboy |
title |
Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite |
title_short |
Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite |
title_full |
Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite |
title_fullStr |
Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite |
title_full_unstemmed |
Electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with Na-bentonite |
title_sort |
electrochemistry and sensitive determination of a metal complex azo dye using graphite paste electrode modified with na-bentonite |
publisher |
Turkish Chemical Society |
series |
Journal of the Turkish Chemical Society, Section A: Chemistry |
issn |
2149-0120 |
publishDate |
2017-09-01 |
description |
Graphite and its composites have gained considerable attention in electrochemical applications due to their excellent structural, electrical and chemical properties. In this study, a graphite paste electrode (GPE) modified with natural Na-bentonite (BGPE) is fabricated and utilized for the sensitive determination of Lanaset Red G (LRG) which is a kind of azo containing metal complex dye. The BGPE shows excellent enhancement in peak currents as compared to that of the GPE. The detection limit of LRG is determined to be as low as 0.65±0.08 when utilizing the BGPE as the working electrode in square wave voltammetry experiments (SWV). The electrochemical behavior of LRG is also investigated using a cyclic voltammetry (CV) technique to propose reaction mechanisms. Effects of pH and scan rate on the electrochemical behavior of LRG are studied to calculate transfer coefficients, the number of protons and electrons transferred in the redox reaction. The results show that a quasi-reversible reaction occurs on the BGPE surface/electrolyte interface. The morphology and the chemical characterization of both BGPE and GPE electrodes are investigated by the atomic force microscopy (AFM) technique and the diffuse reflectance infrared Fourier transform spectroscopy (DRIFT), respectively. |
topic |
Voltammery sensitive determination bentonite azo dye graphite |
url |
http://dergipark.gov.tr/jotcsa/issue/30155/334999 |
work_keys_str_mv |
AT sinemortaboy electrochemistryandsensitivedeterminationofametalcomplexazodyeusinggraphitepasteelectrodemodifiedwithnabentonite |
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1725116317396107264 |