Electrochemical sensing of nitrate ions at Cu-immobilized gold electrode in neutral medium
DOI:
https://doi.org/10.3329/gubjse.v10i1.74948Keywords:
Nitrate reduction, Environmental safety, Electrocatalyst, SensorAbstract
The Cu-immobilized Au surface was electro-catalytically employed for nitrate ions reduction in a neutral solution. According to cyclic voltammetric studies, the Cu/Au electrode has an improved electro-catalytic impact on converting nitrate ions into nitrite ions, governed by a two-electron transfer system. This modified electrode demonstrated good performance in real sample analysis along with good sensitivity (3.2518 $ \mu A \mu M^{-1} cm^{-2}$), long linear detection range (1.2 to 111.4 $\mu M$), a very lower limit of detection (0.85 $\mu M$), an excellent reproducibility. Thus, to determine nitrate ions in an aqueous media, an electrochemical sensor based on a Cu/Au electrode is suggested.
GUB JOURNAL OF SCIENCE AND ENGINEERING, Vol 10(1), 2023 P 75-85
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