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MnWO4/reduced graphene oxide-based electrochemical sensing platform for simultaneous detection of catechol and resorcinol
Abstract
n this study, a novel electrochemical sensor for accurate and sensitive catechol determination was demonstrated employing a screen-printed graphite electrode (SPGE) modified with MnWO4/reduced graphene oxide (MnWO4/rGO) nanocomposite. The MnWO4/rGO nanocomposite has been successfully prepared by using hydrothermal technique, and it was then characterized using several microscopic and spectroscopic methods (XRD, FE-SEM, and EDS). SPGE modified with MnWO4/rGO nanocomposite compared to the unmodified SPGE by creating a synergistic effect and having unique properties (large surface area of MnWO4 nanoparticles along with high electrical conductivity and large surface area of rGO sheets) by enhancing the speed of electron transfer and effective interaction of the analyte with the electrode surface, significantly improved the efficiency of electrochemical reactions and the catalytic effect for detection of catechol. The MnWO4/rGO/SPGE response was shown to be linear with the change in catechol concentration in the concentration range of 0.01–600.0 μM under optimal conditions, and the detection limit was 0.005 μM, utilizing the differential pulse voltammetry (DPV) technique. Moreover, as a means of simultaneous detection of catechol and resorcinol, the modified SPGE demonstrated good catalytic performance. These two analytes' oxidation peaks were completely separated, with an apparent peak potential difference of 380 mV, which made it possible to determine both of these chemicals simultaneously. Eventually, catechol and resorcinol were effectively detected in water samples with acceptable recovery values.
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Authors (6)
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Somayeh Tajik
-
Reza Zaimbashi
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Fariba Garakani Nejad
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Mohammad Bagher Askari
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Hadi Beitollahi
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
DIAMOND AND RELATED MATERIALS
no. 149,
pages 111579 - -,
ISSN: 0925-9635 - Language:
- English
- Publication year:
- 2024
- Bibliographic description:
- Tajik S., Zaimbashi R., Garakani Nejad F., Tourchi Moghadam M. T., Askari M. B., Beitollahi H.: MnWO4/reduced graphene oxide-based electrochemical sensing platform for simultaneous detection of catechol and resorcinol// DIAMOND AND RELATED MATERIALS -, (2024), s.111579--
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.diamond.2024.111579
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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