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Recent Advances in the Design of Electrochemical Sensors

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Electrochemistry".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 653

Special Issue Editor


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Guest Editor
Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
Interests: analytical chemistry; environmental analysis; electrochemical sensors; biosensors; potentiometry; nanomaterials; nanocomposites

Special Issue Information

Dear Colleagues,

Electrochemical sensors are inexpensive and simple analytical tools that have been successfully used for many years in numerous areas of analytical chemistry, including clinical analysis, environmental protection, and industrial analytical control. Due to increasing requirements for sensitivity and selectivity of measurements, there is a growing demand for new devices with better performance. In recent years, thanks to significant progress in the field of materials engineering and the introduction of new materials with unique properties, there has been intensive development of these devices. This Special Issue covers the current state of knowledge on the design of effective, sensitive, and selective electrochemical sensors obtained using new electrode functional materials, i.e., active substances of the receptor layer, nanomaterials, composite materials, hybrid materials, and others. Work on multi-sensor measurement platforms for comprehensive sample analysis  as well as  systems for continuous and on-site analysis are also welcome. In addition, this thematic Special Issue may also include review papers  on current approaches to the design of electrochemical sensors and their critical evaluation.

Dr. Cecylia Wardak
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrochemical sensors
  • electoanalysis
  • electrocatalysis
  • electroactive materials
  • functional materials
  • nanomaterials
  • hybrid mateial
  • potentiometry
  • voltammetry
  • amperometry

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Published Papers (1 paper)

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Research

14 pages, 1884 KB  
Article
Enhancing Analytical Performance of Ammonium Potentiometric Sensors with Carbon Nanocomposites
by Klaudia Morawska, Szymon Malinowski and Cecylia Wardak
Molecules 2026, 31(5), 759; https://doi.org/10.3390/molecules31050759 - 24 Feb 2026
Viewed by 449
Abstract
This paper presents a new type of ammonium electrode that shows a significant improvement in analytical performance compared to unmodified electrodes. The aim of the study was to develop electrodes with better electrochemical parameters, achieved by applying a modification in the form of [...] Read more.
This paper presents a new type of ammonium electrode that shows a significant improvement in analytical performance compared to unmodified electrodes. The aim of the study was to develop electrodes with better electrochemical parameters, achieved by applying a modification in the form of a solid contact layer based on a carbon nanocomposite consisting of carbon nanofibers and multi-walled carbon nanotubes. Measurements were made to evaluate the basic analytical parameters of both unmodified electrodes and those enriched with an intermediate layer in the form of a carbon nanocomposite. The composite-modified electrodes showed an almost ideal theoretical slope value (58.4 mV·dec−1), a lower detection limit, and linearity that remained constant over time. Stability tests showed that electrodes with nanocomposites achieved a potential drift that was almost 50 times lower. An improvement in potential reversibility was also achieved. Another important advantage of the modified electrodes is their resistance to external conditions such as light and the presence of O2 and CO2. In addition, they exhibit selectivity typical for ammonium electrodes. Based on the results obtained, it was found that the multiwalled carbon nanotubes and carbon nanofibers nanocomposite effectively acts as a solid contact layer, which may form the basis for the development of modern, durable, and precise sensors for the determination of ammonium ions in various environments. The determination of NH4+ ions in soil was conducted with success. Full article
(This article belongs to the Special Issue Recent Advances in the Design of Electrochemical Sensors)
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