Electrochemical Nanosensors

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: 20 March 2026 | Viewed by 324

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Guest Editor
Faculty of Materials Science and Ceramics, AGH University of Krakow, al. Mickiewicza 30, 30-059 Krakow, Poland
Interests: voltammetry; analytical chemistry; chemically-modified electrodes; zeolites; vitamins
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Special Issue Information

Dear Colleagues,

Electrochemical nanosensors represent one of the most dynamic and rapidly advancing areas of sensor research, attracting increasing attention from scientists worldwide. The unique properties of nanomaterials, such as their high surface area, tunable morphology, and exceptional electrical and catalytic characteristics, enable the construction of sensing platforms offering outstanding sensitivity, selectivity, and adaptability for real-world applications. They not only facilitate ultra-low detection limits but also ensure reliable analyses in complex matrices.

This Special Issue, titled “Electrochemical Nanosensors”, aims to provide a comprehensive overview of the current state of the art in the design and fabrication of nanosensor platforms, the application of novel nanomaterials with unique physicochemical properties, and the development of innovative strategies to enhance sensor performance. Particular emphasis will be placed on the diverse applications of electrochemical nanosensors, ranging from food and pharmaceutical quality control to environmental monitoring and biomedical diagnostics, highlighting their growing importance in addressing complex analytical challenges. Original research articles, communications, and comprehensive reviews that highlight progress and future perspectives in this rapidly evolving field are welcome.

I warmly welcome your participation in this Special Issue, and I look forward to receiving your valuable contributions.

Dr. Fendrych Katarzyna
Guest Editor

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Keywords

  • nanomaterials
  • electrochemical sensors
  • carbon-based nanomaterials
  • voltammetry
  • potentiometry
  • chemically modified electrodes
  • electrode modifiers
  • nanoparticles

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Published Papers (1 paper)

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Research

18 pages, 5098 KB  
Article
A Novel Zeolite–Carbon Nanotube Composite Electrode for the Electrochemical Analysis of Agomelatine in Real Samples
by Katarzyna Fendrych, Wiktoria Głowacz, Joanna Smajdor-Baran and Bogusław Baś
Nanomaterials 2025, 15(23), 1781; https://doi.org/10.3390/nano15231781 - 26 Nov 2025
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Abstract
This study aimed to develop and apply a novel zeolite-modified electrode (ZME), integrating Cu-exchanged zeolite Y (Cu-ZY) with a conductive carbon matrix composed of multi-walled carbon nanotubes (MWCNTs), for the sensitive and selective voltammetric determination of agomelatine (AGO), an important antidepressant, the accurate [...] Read more.
This study aimed to develop and apply a novel zeolite-modified electrode (ZME), integrating Cu-exchanged zeolite Y (Cu-ZY) with a conductive carbon matrix composed of multi-walled carbon nanotubes (MWCNTs), for the sensitive and selective voltammetric determination of agomelatine (AGO), an important antidepressant, the accurate determination of which in pharmaceutical and biological samples is critical for therapeutic monitoring and quality control. Drop-casting the Cu-ZY/MWCNTs composite onto the surface of a glassy carbon electrode (GCE) resulted in the formation of a unique sensing platform, which exhibited a significantly improved electrochemical response for the oxidation of AGO. The enhanced activity of Cu-ZY/MWCNTs-GCE, attributed to the synergistic combination of Cu-ZY and MWCNTs, was confirmed by morphological, textural, and voltammetric analyses. Differential pulse voltammetry (DPV) was utilized for the quantitative determination of AGO, with optimization performed on instrumental parameters, supporting electrolyte pH, and preconcentration time (tacc). Using the Britton–Robinson buffer (BRB) solution at pH 3.0, the Cu-ZY/MWCNTs-GCE exhibited a linear response to AGO concentrations ranging from 8.2 × 10−9–9.6 × 10−7 mol L−1 (0.002–0.23 mg L−1), achieving a detection limit (LOD) of 4.3 × 10−9 mol L−1 (1.04 µg L−1) with a preconcentration time of 60 s. The successful determination of AGO in pharmaceutical formulations, wastewater, and biological fluids, with recoveries ranging from 98.0 to 113.0%, demonstrates the effectiveness and practical applicability of the Cu-ZY/MWCNT-GCE-based voltammetric method for agomelatine analysis in complex matrices. Full article
(This article belongs to the Special Issue Electrochemical Nanosensors)
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