Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO2-polyaniline composite

Qasar Saleem; Sammia Shahid; Mohsin Javed; Shahid Iqbal; Abdur Rahim; Sana Mansoor; Ali Bahadur; Nasser S. Awwad; Hala A. Ibrahium; Rasmiah S. Almufarij; Eslam B. Elkaeed

doi:10.1039/d3ra00668a

Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO₂-polyaniline composite

Qasar Saleem, Sammia Shahid, Mohsin Javed, Shahid Iqbal, Abdur Rahim, Sana Mansoor, Ali Bahadur, Nasser S. Awwad, Hala A. Ibrahium, Rasmiah S. Almufarij, Eslam B. Elkaeed

Research output: Journal Publication › Article › peer-review

8 Citations (Scopus)

Abstract

The conductive composite Co@SnO₂-PANI was successfully synthesized using hydrothermal/oxidative synthesis. Using differential pulse voltammetry, a glassy carbon electrode modified with a CoSnO₂-PANI (polyaniline)-based electrochemical biosensor has been created for the quick detection of two phenolics, hydroquinone (Hq) and catechol (Cat). Differential pulse voltammetry (DPV) measurements revealed two well-resolved, strong peaks for GCE@Co-SnO₂-PANI, which corresponded to the oxidation of Hq and Cat at 275.87 mV and +373.76 mV, respectively. The oxidation peaks of Hq and Cat mixtures were defined and separated at a pH of 8.5. High conductivity and remarkable selectivity reproducibility was tested by electrochemical impedance spectroscopy, chronoamperometry, and cyclic voltammetry techniques in standard solution and real water samples. The proposed biosensor displayed a low detection limit of 4.94 nM (Hq) and 1.5786 nM (Cat), as well as a large linear range stretching from 2 × 10⁻² M to 2 × 10⁻¹ M. The real-sample testing showed a good recovery for the immediate detection of Hq (96.4% recovery) and Cat (98.8% recovery) using the investigated sensing apparatus. The synthesized biosensor was characterized by XRD, FTIR, energy dispersive spectroscopy and scanning electron microscopy.

Original language	English
Pages (from-to)	10017-10028
Number of pages	12
Journal	RSC Advances
Volume	13
Issue number	15
DOIs	https://doi.org/10.1039/d3ra00668a
Publication status	Published - 29 Mar 2023
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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10.1039/d3ra00668a

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title = "Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO2-polyaniline composite",

abstract = "The conductive composite Co@SnO2-PANI was successfully synthesized using hydrothermal/oxidative synthesis. Using differential pulse voltammetry, a glassy carbon electrode modified with a CoSnO2-PANI (polyaniline)-based electrochemical biosensor has been created for the quick detection of two phenolics, hydroquinone (Hq) and catechol (Cat). Differential pulse voltammetry (DPV) measurements revealed two well-resolved, strong peaks for GCE@Co-SnO2-PANI, which corresponded to the oxidation of Hq and Cat at 275.87 mV and +373.76 mV, respectively. The oxidation peaks of Hq and Cat mixtures were defined and separated at a pH of 8.5. High conductivity and remarkable selectivity reproducibility was tested by electrochemical impedance spectroscopy, chronoamperometry, and cyclic voltammetry techniques in standard solution and real water samples. The proposed biosensor displayed a low detection limit of 4.94 nM (Hq) and 1.5786 nM (Cat), as well as a large linear range stretching from 2 × 10−2 M to 2 × 10−1 M. The real-sample testing showed a good recovery for the immediate detection of Hq (96.4% recovery) and Cat (98.8% recovery) using the investigated sensing apparatus. The synthesized biosensor was characterized by XRD, FTIR, energy dispersive spectroscopy and scanning electron microscopy.",

author = "Qasar Saleem and Sammia Shahid and Mohsin Javed and Shahid Iqbal and Abdur Rahim and Sana Mansoor and Ali Bahadur and Awwad, {Nasser S.} and Ibrahium, {Hala A.} and Almufarij, {Rasmiah S.} and Elkaeed, {Eslam B.}",

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doi = "10.1039/d3ra00668a",

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T1 - Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO2-polyaniline composite

AU - Saleem, Qasar

AU - Shahid, Sammia

AU - Javed, Mohsin

AU - Iqbal, Shahid

AU - Rahim, Abdur

AU - Mansoor, Sana

AU - Bahadur, Ali

AU - Awwad, Nasser S.

AU - Ibrahium, Hala A.

AU - Almufarij, Rasmiah S.

AU - Elkaeed, Eslam B.

PY - 2023/3/29

Y1 - 2023/3/29

N2 - The conductive composite Co@SnO2-PANI was successfully synthesized using hydrothermal/oxidative synthesis. Using differential pulse voltammetry, a glassy carbon electrode modified with a CoSnO2-PANI (polyaniline)-based electrochemical biosensor has been created for the quick detection of two phenolics, hydroquinone (Hq) and catechol (Cat). Differential pulse voltammetry (DPV) measurements revealed two well-resolved, strong peaks for GCE@Co-SnO2-PANI, which corresponded to the oxidation of Hq and Cat at 275.87 mV and +373.76 mV, respectively. The oxidation peaks of Hq and Cat mixtures were defined and separated at a pH of 8.5. High conductivity and remarkable selectivity reproducibility was tested by electrochemical impedance spectroscopy, chronoamperometry, and cyclic voltammetry techniques in standard solution and real water samples. The proposed biosensor displayed a low detection limit of 4.94 nM (Hq) and 1.5786 nM (Cat), as well as a large linear range stretching from 2 × 10−2 M to 2 × 10−1 M. The real-sample testing showed a good recovery for the immediate detection of Hq (96.4% recovery) and Cat (98.8% recovery) using the investigated sensing apparatus. The synthesized biosensor was characterized by XRD, FTIR, energy dispersive spectroscopy and scanning electron microscopy.

AB - The conductive composite Co@SnO2-PANI was successfully synthesized using hydrothermal/oxidative synthesis. Using differential pulse voltammetry, a glassy carbon electrode modified with a CoSnO2-PANI (polyaniline)-based electrochemical biosensor has been created for the quick detection of two phenolics, hydroquinone (Hq) and catechol (Cat). Differential pulse voltammetry (DPV) measurements revealed two well-resolved, strong peaks for GCE@Co-SnO2-PANI, which corresponded to the oxidation of Hq and Cat at 275.87 mV and +373.76 mV, respectively. The oxidation peaks of Hq and Cat mixtures were defined and separated at a pH of 8.5. High conductivity and remarkable selectivity reproducibility was tested by electrochemical impedance spectroscopy, chronoamperometry, and cyclic voltammetry techniques in standard solution and real water samples. The proposed biosensor displayed a low detection limit of 4.94 nM (Hq) and 1.5786 nM (Cat), as well as a large linear range stretching from 2 × 10−2 M to 2 × 10−1 M. The real-sample testing showed a good recovery for the immediate detection of Hq (96.4% recovery) and Cat (98.8% recovery) using the investigated sensing apparatus. The synthesized biosensor was characterized by XRD, FTIR, energy dispersive spectroscopy and scanning electron microscopy.

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JF - RSC Advances

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ER -

Synchronized electrochemical detection of hydroquinone and catechol in real water samples using a Co@SnO₂-polyaniline composite

Abstract

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