Article 2023 · 13 citations

Ag nanoparticles-decorated CuBi2O4-rGO electrodes as an amperometric sensor for electrochemical determination of nitrite

Dogan, Huelya Ozturk, Albayrak, Omer Faruk

Abstract

There is an increasing demand for developing more sensitive sensors for determining nitrite, which has potential use in wastewater, food preservatives, and corrosion inhibitors. Here, we designed a CuBi2O4/rGO nano composite via simultaneous electrochemical deposition of GO and CuBi2O4. Then, the nanocomposite surface was electrochemically functionalized with Ag nanoparticles. Analytical and morphological characterizations showed that nanocomposites were synthesized with high purity and crystallinity. Finally, the electrocatalytic activity of the prepared Ag@CuBi2O4/rGO electrode was investigated as an electrochemical sensor application in nitrite detection. Ag@CuBi2O4/rGO had a higher faradaic current than CuBi2O4/rGO and PGE. The modified electrode exhibited high selectivity with low nitrite oxidation potential (+ 0.8 V) and detection limit (0.18 & mu;M). The detection limit for nitrite is lower than that of most reported materials.

Keywords

Ag NPs Copper bismuthate Reduced graphene oxide Nitrite sensor Electrochemical detection REDUCED GRAPHENE OXIDE NANOCOMPOSITE FABRICATION COMPOSITE PHOTOCATHODE REDUCTION PLATFORM NITRATE

WoS Categories

Materials Science, Multidisciplinary Physics, Condensed Matter Polymer Science

Citation

Journal: SYNTHETIC METALS
Year: 2023
Volume: 298
ISSN: 0379-6779
DOI: 10.1016/j.synthmet.2023.117445
WoS UID: WOS:001058084200001

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