Bismuth-nanoparticles decorated multi-wall-carbon-nanotubes cast-coated on carbon paste electrode; an electrochemical sensor for sensitive determination of Gallic Acid at neutral pH

Madhusudhana, G. Manasa, Arvind Kumar Bhakta, Zineb Mekhalif, Ronald J. Mascarenhas

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Abstract

In this work, we have successfully developed a novel amperometric sensor for the detection of Gallic Acid (GA) based on bismuth nanoparticles decorated multi-wall-carbon-nanotubes modified carbon paste electrode (Bi-MWCNT/MCPE) at physiological pH. We investigated electrochemical oxidation of GA at neutral pH since there is limited literature at this pH. Surface morphology of the synthesized Bi-MWCNT composite was examined using high resolution transmission electron microscopy (TEM) and X-ray diffraction (XRD). Our fabricated Bi-MWCNT/MCPE was characterized with the aid of field emission scanning electron microscopy (FE-SEM) coupled to energy dispersive X-ray (EDX). The electron impedance spectroscopy (EIS) was employed to study the electrode–electrolyte interface properties, which depicted least electron transfer at Bi-MWCNT/MCPE. During Cyclic voltammetric (CV) analysis of GA at Bi-MWCNT/MCPE, we observed a threefold enhancement in anodic peak current (Ipa) compared to bare CPE. Amperometric quantitative analysis implied proportionality between Ipa and GA concentration in the range 1.0 to 100.0 μM with the lower detection limit (LOD) of 1.6 × 10−7 M (S/N = 3.3). Results from the interference study indicated good anti-interference property of the proposed sensor and could as well be subjected for real sample analysis, which was fortifying with GA. From the acceptable recoveries obtained we confirm the sensor’s practical applicability. Finally, the developed sensor offered many benefits such as excellent detection particularly at neutral pH, wide linear dynamic range, selectivity, stability, and reproducibility.
Original languageEnglish
Pages (from-to)174-182
Number of pages9
JournalMaterials Science for Energy Technologies
Volume3
DOIs
Publication statusPublished - 2020

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Electrochemical sensors
Gallic Acid
Bismuth
Carbon Nanotubes
Ointments
Carbon
Nanoparticles
Electrodes
Sensors
Amperometric sensors
Electrons
Electrochemical oxidation
High resolution transmission electron microscopy
Field emission
Surface morphology
Spectroscopy
Recovery
X ray diffraction
X rays
Scanning electron microscopy

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@article{ef9547f583f14351b9fa5ba103b7e776,
title = "Bismuth-nanoparticles decorated multi-wall-carbon-nanotubes cast-coated on carbon paste electrode; an electrochemical sensor for sensitive determination of Gallic Acid at neutral pH",
abstract = "In this work, we have successfully developed a novel amperometric sensor for the detection of Gallic Acid (GA) based on bismuth nanoparticles decorated multi-wall-carbon-nanotubes modified carbon paste electrode (Bi-MWCNT/MCPE) at physiological pH. We investigated electrochemical oxidation of GA at neutral pH since there is limited literature at this pH. Surface morphology of the synthesized Bi-MWCNT composite was examined using high resolution transmission electron microscopy (TEM) and X-ray diffraction (XRD). Our fabricated Bi-MWCNT/MCPE was characterized with the aid of field emission scanning electron microscopy (FE-SEM) coupled to energy dispersive X-ray (EDX). The electron impedance spectroscopy (EIS) was employed to study the electrode–electrolyte interface properties, which depicted least electron transfer at Bi-MWCNT/MCPE. During Cyclic voltammetric (CV) analysis of GA at Bi-MWCNT/MCPE, we observed a threefold enhancement in anodic peak current (Ipa) compared to bare CPE. Amperometric quantitative analysis implied proportionality between Ipa and GA concentration in the range 1.0 to 100.0 μM with the lower detection limit (LOD) of 1.6 × 10−7 M (S/N = 3.3). Results from the interference study indicated good anti-interference property of the proposed sensor and could as well be subjected for real sample analysis, which was fortifying with GA. From the acceptable recoveries obtained we confirm the sensor’s practical applicability. Finally, the developed sensor offered many benefits such as excellent detection particularly at neutral pH, wide linear dynamic range, selectivity, stability, and reproducibility.",
author = "Madhusudhana and G. Manasa and Bhakta, {Arvind Kumar} and Zineb Mekhalif and Mascarenhas, {Ronald J.}",
year = "2020",
doi = "10.1016/j.mset.2019.10.001",
language = "English",
volume = "3",
pages = "174--182",
journal = "Materials Science for Energy Technologies",
issn = "2589-2991",
publisher = "Ke Ai Publishing",

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TY - JOUR

T1 - Bismuth-nanoparticles decorated multi-wall-carbon-nanotubes cast-coated on carbon paste electrode; an electrochemical sensor for sensitive determination of Gallic Acid at neutral pH

AU - Madhusudhana,

AU - Manasa, G.

AU - Bhakta, Arvind Kumar

AU - Mekhalif, Zineb

AU - Mascarenhas, Ronald J.

PY - 2020

Y1 - 2020

N2 - In this work, we have successfully developed a novel amperometric sensor for the detection of Gallic Acid (GA) based on bismuth nanoparticles decorated multi-wall-carbon-nanotubes modified carbon paste electrode (Bi-MWCNT/MCPE) at physiological pH. We investigated electrochemical oxidation of GA at neutral pH since there is limited literature at this pH. Surface morphology of the synthesized Bi-MWCNT composite was examined using high resolution transmission electron microscopy (TEM) and X-ray diffraction (XRD). Our fabricated Bi-MWCNT/MCPE was characterized with the aid of field emission scanning electron microscopy (FE-SEM) coupled to energy dispersive X-ray (EDX). The electron impedance spectroscopy (EIS) was employed to study the electrode–electrolyte interface properties, which depicted least electron transfer at Bi-MWCNT/MCPE. During Cyclic voltammetric (CV) analysis of GA at Bi-MWCNT/MCPE, we observed a threefold enhancement in anodic peak current (Ipa) compared to bare CPE. Amperometric quantitative analysis implied proportionality between Ipa and GA concentration in the range 1.0 to 100.0 μM with the lower detection limit (LOD) of 1.6 × 10−7 M (S/N = 3.3). Results from the interference study indicated good anti-interference property of the proposed sensor and could as well be subjected for real sample analysis, which was fortifying with GA. From the acceptable recoveries obtained we confirm the sensor’s practical applicability. Finally, the developed sensor offered many benefits such as excellent detection particularly at neutral pH, wide linear dynamic range, selectivity, stability, and reproducibility.

AB - In this work, we have successfully developed a novel amperometric sensor for the detection of Gallic Acid (GA) based on bismuth nanoparticles decorated multi-wall-carbon-nanotubes modified carbon paste electrode (Bi-MWCNT/MCPE) at physiological pH. We investigated electrochemical oxidation of GA at neutral pH since there is limited literature at this pH. Surface morphology of the synthesized Bi-MWCNT composite was examined using high resolution transmission electron microscopy (TEM) and X-ray diffraction (XRD). Our fabricated Bi-MWCNT/MCPE was characterized with the aid of field emission scanning electron microscopy (FE-SEM) coupled to energy dispersive X-ray (EDX). The electron impedance spectroscopy (EIS) was employed to study the electrode–electrolyte interface properties, which depicted least electron transfer at Bi-MWCNT/MCPE. During Cyclic voltammetric (CV) analysis of GA at Bi-MWCNT/MCPE, we observed a threefold enhancement in anodic peak current (Ipa) compared to bare CPE. Amperometric quantitative analysis implied proportionality between Ipa and GA concentration in the range 1.0 to 100.0 μM with the lower detection limit (LOD) of 1.6 × 10−7 M (S/N = 3.3). Results from the interference study indicated good anti-interference property of the proposed sensor and could as well be subjected for real sample analysis, which was fortifying with GA. From the acceptable recoveries obtained we confirm the sensor’s practical applicability. Finally, the developed sensor offered many benefits such as excellent detection particularly at neutral pH, wide linear dynamic range, selectivity, stability, and reproducibility.

U2 - 10.1016/j.mset.2019.10.001

DO - 10.1016/j.mset.2019.10.001

M3 - Article

VL - 3

SP - 174

EP - 182

JO - Materials Science for Energy Technologies

JF - Materials Science for Energy Technologies

SN - 2589-2991

ER -