CuO Nanostructures Based Electrochemical Sensor for Simultaneous Determination of Hydroquinone and Ascorbic Acid
A simple, sensitive and reliable electrochemical sensor has been developed based on CuO nanostructures modified glassy carbon electrode for simultaneous determination of hydroquinone (HQ) and ascorbic acid (AA). The CuO nano material was synthesized by aqueous chemical growth method using different...
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Published in | Electroanalysis (New York, N.Y.) Vol. 32; no. 7; pp. 1600 - 1607 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
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01.07.2020
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Abstract | A simple, sensitive and reliable electrochemical sensor has been developed based on CuO nanostructures modified glassy carbon electrode for simultaneous determination of hydroquinone (HQ) and ascorbic acid (AA). The CuO nano material was synthesized by aqueous chemical growth method using different sources of OH. The characterization of nano material was performed by Fourier transform infrared spectroscopy, X‐ray diffraction, field emission scanning electron microscopy and energy dispersive X‐ray spectroscopy. The glassy carbon electrode was modified by CuO nano material using drop cast method and studied by cyclic voltammetry. The CuO/GCE exhibited excellent electrocatalytic activity towards the oxidations of HQ and AA in borate buffer solution (pH 8.0) and the corresponding electrochemical signals have appeared as two well resolved oxidation peaks with significant peak potential differences of (0.21V vs. Ag/AgCl). Differential pulse voltammetry was used for simultaneous determination of HQ and AA using the CuO/GCE. At the optimum conditions, for simultaneous determination by synchronous change of the analyte concentrations, the linear response ranges were between 0.0003–0.355 mM for HQ and 0.0001–0.30 mM for AA respectively. Furthermore, CuO/GCE was successfully applied for the independent determination of AA in fruit juices as well as for the simultaneous determination of HQ and AA in cosmetic samples. |
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AbstractList | A simple, sensitive and reliable electrochemical sensor has been developed based on CuO nanostructures modified glassy carbon electrode for simultaneous determination of hydroquinone (HQ) and ascorbic acid (AA). The CuO nano material was synthesized by aqueous chemical growth method using different sources of OH. The characterization of nano material was performed by Fourier transform infrared spectroscopy, X‐ray diffraction, field emission scanning electron microscopy and energy dispersive X‐ray spectroscopy. The glassy carbon electrode was modified by CuO nano material using drop cast method and studied by cyclic voltammetry. The CuO/GCE exhibited excellent electrocatalytic activity towards the oxidations of HQ and AA in borate buffer solution (pH 8.0) and the corresponding electrochemical signals have appeared as two well resolved oxidation peaks with significant peak potential differences of (0.21V vs. Ag/AgCl). Differential pulse voltammetry was used for simultaneous determination of HQ and AA using the CuO/GCE. At the optimum conditions, for simultaneous determination by synchronous change of the analyte concentrations, the linear response ranges were between 0.0003–0.355 mM for HQ and 0.0001–0.30 mM for AA respectively. Furthermore, CuO/GCE was successfully applied for the independent determination of AA in fruit juices as well as for the simultaneous determination of HQ and AA in cosmetic samples. |
Author | Wajdan, Zahid Agheem, Muhammad H. Ameen, Sidra Khand, Nadir H. Solangi, Amber R. Buledi, Jamil A. Taqvi, Iqleem H. |
Author_xml | – sequence: 1 givenname: Jamil A. surname: Buledi fullname: Buledi, Jamil A. organization: University of Sindh – sequence: 2 givenname: Sidra surname: Ameen fullname: Ameen, Sidra organization: Shaheed Benazir Bhutto University – sequence: 3 givenname: Nadir H. surname: Khand fullname: Khand, Nadir H. organization: University of Sindh – sequence: 4 givenname: Amber R. orcidid: 0000-0002-3852-1245 surname: Solangi fullname: Solangi, Amber R. email: ambersolangi@gmail.com organization: University of Sindh – sequence: 5 givenname: Iqleem H. surname: Taqvi fullname: Taqvi, Iqleem H. organization: Government College University – sequence: 6 givenname: Muhammad H. surname: Agheem fullname: Agheem, Muhammad H. organization: University of Sindh – sequence: 7 givenname: Zahid surname: Wajdan fullname: Wajdan, Zahid organization: University of Sindh |
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SubjectTerms | ascorbic acid CuO fruit juices hydroquinone Nano material whitening agent |
Title | CuO Nanostructures Based Electrochemical Sensor for Simultaneous Determination of Hydroquinone and Ascorbic Acid |
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