The Application of ۲,۶-Dichlorophenolindophenol-Functionalized Carbon nanotubes for Electrocatalytic Determination of Sulfide Ions

سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 163

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شناسه ملی سند علمی:

JR_IJAC-7-2_005

تاریخ نمایه سازی: 1 مرداد 1401

چکیده مقاله:

A chemically modified glassy carbon electrode was developed using multi-walled carbon nanotubes covalently immobilized with ۲,۶-dichlorophenolindophenol. The immobilization of ۲,۶-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 ۲,۶-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 ۱.۸ µM – ۲.۵ mM. The detection limit of sulfide was ۱.۱ µM, and RSD for ۱۰ and ۱۰۰۰ µM sulfide was ۱.۸ and ۱.۳ %, 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.

نویسندگان

Alireza Mohadesi

Department of Chemistry, Payame Noor University, P.O. Box۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Somayeh Parvaresh

Department of Chemistry, Payame Noor University, P.O. Box۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Zarrin Eshaghi

Department of Chemistry, Payame Noor University, P.O. Box۱۹۳۹۵-۳۶۹۷ Tehran, Iran

Mohammad Ali Karimi

Department of Chemistry, Payame Noor University, P.O. Box۱۹۳۹۵-۳۶۹۷ Tehran, Iran

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