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An environmentally friendly, layer-by-layer assembled electrode for ultrafast electrochemical detection of nitrite in water

An environmentally friendly, layer-by-layer assembled electrode for ultrafast electrochemical... The development of sensors for rapid nitrite detection in water is of great significance to human health and environmental protection. In this study, carboxylated cellulose nanocrystals were prepared by oxidizing microcrystalline cellulose with ammonium persulfate. Subsequently, a composite film was successfully prepared by depositing carboxylated nanocrystalline cellulose and poly(diallyldimethyl ammonium chloride) onto a glass carbon electrode using the layer-by-layer assembly method. After electrodepositing poly(3,4-ethylenedioxythiophene), the resulting electrode was utilized as an electrochemical sensor for nitrite detection. The effect of the number of layers of the composite film on electrocatalytic performance towards nitrite was investigated. Under optimal conditions, the sensor exhibited an ultrafast response to nitrite within 0.5 s, which was better than that of most similar sensors reported. Additionally, it had a wide linear range of 0.5–3000 µM and a low detection limit of 0.26 µM. Furthermore, this sensor showed satisfactory recovery between 98.78 and 103.29% for nitrite in real water samples. Our study presents a significant approach towards the development of an environmentally friendly nitrite sensor with an ultrafast response.Graphical abstract[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Electrochemistry Springer Journals

An environmentally friendly, layer-by-layer assembled electrode for ultrafast electrochemical detection of nitrite in water

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References (72)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature B.V. 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0021-891X
eISSN
1572-8838
DOI
10.1007/s10800-023-01922-y
Publisher site
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Abstract

The development of sensors for rapid nitrite detection in water is of great significance to human health and environmental protection. In this study, carboxylated cellulose nanocrystals were prepared by oxidizing microcrystalline cellulose with ammonium persulfate. Subsequently, a composite film was successfully prepared by depositing carboxylated nanocrystalline cellulose and poly(diallyldimethyl ammonium chloride) onto a glass carbon electrode using the layer-by-layer assembly method. After electrodepositing poly(3,4-ethylenedioxythiophene), the resulting electrode was utilized as an electrochemical sensor for nitrite detection. The effect of the number of layers of the composite film on electrocatalytic performance towards nitrite was investigated. Under optimal conditions, the sensor exhibited an ultrafast response to nitrite within 0.5 s, which was better than that of most similar sensors reported. Additionally, it had a wide linear range of 0.5–3000 µM and a low detection limit of 0.26 µM. Furthermore, this sensor showed satisfactory recovery between 98.78 and 103.29% for nitrite in real water samples. Our study presents a significant approach towards the development of an environmentally friendly nitrite sensor with an ultrafast response.Graphical abstract[graphic not available: see fulltext]

Journal

Journal of Applied Electrochemistry – Springer Journals

Published: Dec 1, 2023

Keywords: Carboxylated cellulose nanocrystal; Layer-by-layer assemble; Nitrite sensor; Electrochemical detection

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