Cost-Effective Voltammetric Assay Based on Modified Screen Printed Carbon Electrode for Determination of 4-Aminophenol
نویسندگان
1 School of Medicine, Bam University of Medical Sciences, Bam, Iran
2 Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
3 Research Center of Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
4 Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
5 Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
doi
10.48309/jaoc.2025.505904.1268چکیده
This study presents the development of a sensitive electrochemical sensor utilizing a nanocomposite of multi-walled carbon nanotubes (MWCNTs) with a zeolitic imidazolate framework (ZIF) containing cobalt (Co) composite modified screen-printed electrode (SPE) for the recognition and detection of 4-aminophenol (4-AP). The sensor was fabricated using a simple drop-coating method, resulting in enhanced electrochemical performance characterized by high sensitivity, low detection limit (LOD), and excellent selectivity. The sensor demonstrated a peak current sensitivity of 0.0604 μA.μM-¹ and a LOD of 0.02 µM for 4-AP. The exceptional performance is attributed to the unique properties of the MWCNTs/ZIF (L) (Co) composite, such as a low charge transfer resistance, and a high density of active sites. The sensor's effectiveness was further validated through its application in detecting trace levels of 4-AP in water samples, showcasing its potential for environmental monitoring and diagnostics.
