Original scientific paper
https://doi.org/10.5599/jese.2832
Fabrication of a sensitive electrochemical sensor based on CuS-modified carbon paste electrode for hydrazine analysis in water samples
Ahmad Amer Al-Salman
orcid.org/0009-0005-9790-0834
; Department of Chemical Engineering, College of Engineering, University of Babylon, Iraq
*
Rafah Mohammed Thyab
; Department of Chemistry, College of Science, University of Kufa, Iraq
Muhammad Abdel Hasan Shallal
; Department of Chemistry, College of Sciences, University of Dhi Qar, Iraq
* Corresponding author.
Abstract
A new electrochemical sensor based on a CuS-modified carbon paste electrode (CPE) was fabricated for the determination of hydrazine. In comparison with the bare CPE, the CuS-modified electrode significantly enhanced the electrooxidation performance of hydrazine by reducing the oxidation overpotential and increasing the oxidation peak current. Differential pulse voltammetry was used as the analytical method for the quantitative determination of hydrazine. The anode peak current was linearly related to hydrazine concentrations between 0.06 and 270.0 μM with a detection limit of as little as 0.02 μM. The sensor modification also showed good stability, reproducibility, and sensitivity. In addition, experimental results demonstrated the reliability and effectiveness of the sensor in determining hydrazine in various types of water samples.
Keywords
Differential pulse voltammetry; ; CuS nanosheets; environmental pollutants; chemically modified electrode
Hrčak ID:
339942
URI
Publication date:
23.7.2025.
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