A reliable sensor based on multiwalled carbon nanotubes / ۴'۴ - dihydroxybiphenyl nanolayered composite for sensing phenol
Publish Year: 1401
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
BCSCD01_021
تاریخ نمایه سازی: 4 فروردین 1402
Abstract:
This paper reports the preparation of multiwalled carbon nanotubes/ ۴,۴ʹ-dihydroxybiphenyl (MWCNTs-DHB) nanolayered composite as a new modifier for modification of carbon paste electrode (CPE/ MWCNTs-DHB). CPE/ MWCNTs-DHB shows linear responses for phenol in the concentrations range of ۰.۰۴-۲۲۰ μM with a current sensitivity of ۰.۶۷ µA µM-۱ and a detection limit of ۸.۰ nM (S/N=۳). The electrode shows high selectivity, good repeatability (RSD = ۴.۱ %), excellent reproducibility (RSD = ۳.۵ %), and acceptable stability (۹۱.۲ % over one-month storage). Moreover, the modified CPE exhibits appreciable recoveries (۹۳.۰ – ۱۰۴.۰ %) indicating its acceptable performance for determination of phenol in tap and river water samples.
Keywords:
Multiwalled carbon nanotubes (MWCNTs) , ۴'۴ -dihydroxybiphenyl (DHB) , carbon past electrode , electrochemical determination of phenol(Ph)
Authors
Mehdi Shahbakhsh
Analytical Chemistry Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan,, P.O. Box ۹۸۱۳۵-۶۷۴, Zahedan, Iran
Sabereh Narouie
Department of Chemistry, Faculty of sciences, Ferdowsi University of Mashhad, Mashhad, Iran
Gholam Hossein Rounaghi
Department of Chemistry, Faculty of sciences, Ferdowsi University of Mashhad, Mashhad, Iran
Hamideh. Saravani
Inorganic Chemistry Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan,P.O. Box ۹۸۱۳۵-۶۷۴, Zahedan, Iran