Carbon paste electrodes and ZnO/CPE sensors: a short review
Date
2025
Authors
Cvetković, Aleksandar
Tasić, Zaklina
Petrović Mihajlović, Marija
Radovanović, Milan B.
Simonović, Ana
Antonijević, Milan
Milić, Snežana
Journal Title
Journal ISSN
Volume Title
Publisher
The Academy of Applied Studies Polytechnic, Belgrade
Source
Conference Proceedings [Elektronski izvor] - International Scientific and Professional Conference Politehnika 2025, Belgrade, 28th November 2025
Volume
Issue
Abstract
This paper represents a short review of electrochemical sensors based on carbon materials, with a focus on carbon paste electrodes (CPEs) as signal detectors, and the pivot placed on the preparation steps, where CPEs stand out because of their easy preparation, regenerability, and high flexibility for modification. Incorporation of zinc oxide (ZnO) nanoparticles into CPE matrices enhances sensor performance by enlarging the active surface area, reducing charge-transfer resistance, and improving electron transfer kinetics. ZnO/CPE electrodes have demonstrated high sensitivity and selectivity for the detection of pharmaceuticals, food additives, dyes, and biologically active compounds. Their preparation is straightforward, typically involving co-precipitation synthesis of ZnO nanoparticles followed by mixing with graphite powder and binder. Combined electrochemical and morphological characterization provides insights into the structural and functional improvements achieved by ZnO modification, confirming their potential for advanced electrochemical sensing applications.
Description
Keywords
CPE, MCPE, ZnO nanoparticles, electrochemical sensors
Citation
DOI
Scopus
ISSN
ISBN
978-86-7498-146-7
License
ARR