Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 786, Issue -, Pages 698-706Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.02.020
Keywords
Bisphenol A; Electrochemical sensor; Carbon black; CB/f-MWCNTs; Cyclic voltammetry
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Funding
- Science and Engineering Research Board, Department of Science and Technology, Government of India [PDF/2017/000564]
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A novel electrochemical sensing platform for the determination of bisphenol A (BPA) was constructed on a glassy carbon electrode adapted by employing carboxylic acid functionalized carbon black-multi-walled carbon nanotubes (CB/f-MWCNTs). The morphology of CB/f-MWCNTs composite was described by examining scanning electron microscopy (SEM), X-ray powder diffraction (XRD), high-resolution transmission microscopy (HR-TEM) and laser Raman spectra. The developed electrode was examined for the electrochemical oxidation of BPA using cyclic voltammetry (CV) and amperometric techniques in which, CB/f-MWCNTs composite was demonstrated to be highly sensitive and selective detection of towards BPA. Contrasted with a bare GCE electrode, the CB/f-MWCNTs electrode showed an increase of peak current of about 260 mu A on the electro-oxidation of BPA. The instant detection of BPA was refined with amperometry under streamlined conditions. CB/f-MWCNTs composite modified GC electrode revealed an excellent sensitivity within the concentration varying from 0.1 to 130 mu M with a lower detection limit of 0.08 mu mol L-1 (S/N = 3, R-2: 0.998). The projected strategy was effectively to utilise the recognition of BPA real samples (plastic drinking water bottles) with acceptable results and great recuperation. (C) 2019 Elsevier B.V. All rights reserved.
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