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Chemical Sensors for Toxic Chemical Detection: 2nd Edition
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Chemical Sensors for Toxic Chemical Detection: 2nd Edition

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Chemical Sensors".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 1321

Special Issue Editor

Dr. Marijo Buzuk

E-Mail Website
Guest Editor
Department of General and Inorganic Chemistry, Faculty of Chemistry and Technology, University of Split, 21000 Split, Croatia
Interests: electrochemistry; Electroanalysis; Electrochemical sensors; surface modification; carbon electrodes; Polyelectrolytes; Electrochemical Impedance Spectroscopy; voltammetry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The growing interest in chemical sensing of toxic chemicals has arisen due to the rising demand for health and environmental standards, security and safety. Toxic chemicals (toxic inorganic species, gases, carcinogens substances, pesticides, etc.) have a wide range of household, industrial, and military applications, as cumulative exposure at trace concentrations can have long-term adverse effects. Chemical sensors are attractive devices that offer significant benefits, such as low cost, portability, simplicity of operation, selectivity, durability, etc. 

This Special Issue will focus on publishing original and review articles discussing recent advances and challenges in the development of chemical sensors to identify toxic chemicals.  Herein, this Special Issue will focus on the following themes:

  • New trends in the development of electrochemical sensors (immunosensors, biosensors, affinity-based, DNA-based, mediator-based, semiconductor-based, etc.) for the determination of toxic chemicals;
  • Carbon nanomaterials in a chemical sensing system;
  • Composite materials as sensing elements in the determination of toxic chemicals;
  • Biochips and microarrays in the manufacturing of sensors;
  • Optical sensors and arrays in the detection of harmful substances;
  • Acoustic-wave-based sensors;
  • Toxic chemical sensors based on living organisms, tissues, and cells;
  • Metal nanoparticles in sensing toxic chemicals.

Dr. Marijo Buzuk
Guest Editor

Josipa Dugeč
Guest Editor Assistant

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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Sensors 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 2600 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

  • chemical sensing
  • toxic chemicals
  • electrochemical sensors

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Published Papers (3 papers)

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Research

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13 pages, 1333 KiB  
Article
Electrochemical Behavior of Some Cinchona Alkaloids Using Screen-Printed Electrodes
by Tonino Caruso and Laura Palombi
Sensors 2025, 25(7), 2216; https://doi.org/10.3390/s25072216 - 1 Apr 2025
Viewed by 265
Abstract
An effective deposition of a cinchonine layer on a platinum metal surface can be easily achieved through the cathodic reduction of a cinchonine hydrochloride methanolic solution at a controlled potential of −220 mV vs. the silver standard electrode (SSE). A coated screen-printed platinum [...] Read more.
An effective deposition of a cinchonine layer on a platinum metal surface can be easily achieved through the cathodic reduction of a cinchonine hydrochloride methanolic solution at a controlled potential of −220 mV vs. the silver standard electrode (SSE). A coated screen-printed platinum electrode has proven to be suitable for cinchonine determination in water, urine, and serum at µg L−1 concentration levels using differential pulse voltammetry in a phosphate buffer solution (pH 7.0). The limits of detection (LOD) and quantitation (LOQ) were 0.6 µg L−1 and 1.8 µg L−1, respectively. Full article
(This article belongs to the Special Issue Chemical Sensors for Toxic Chemical Detection: 2nd Edition)
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14 pages, 3567 KiB  
Article
Adsorption and Detection of Toxic Gases on CuO-Modified SnS Monolayers: A DFT Study
by Xinyue Liang, Ping Wang, Kai Zheng, Xuan Yang, Meidan Luo, Jiaying Wang, Yujuan He, Jiabing Yu and Xianping Chen
Sensors 2025, 25(5), 1439; https://doi.org/10.3390/s25051439 - 26 Feb 2025
Viewed by 555
Abstract
The emission of toxic gases such as NO2, NO, SO2, and CO from industrial activities, transportation, and energy production poses significant threats to the environment and public health. Traditional gas sensors often lack high sensitivity and selectivity. To address [...] Read more.
The emission of toxic gases such as NO2, NO, SO2, and CO from industrial activities, transportation, and energy production poses significant threats to the environment and public health. Traditional gas sensors often lack high sensitivity and selectivity. To address this, our study uses first-principles density functional theory (DFT) to investigate CuO-SnS monolayers for improved gas sensor performance. The results show that CuO modification significantly enhances the adsorption capacity and selectivity of SnS monolayers for NO2 and NO, with adsorption energies of −2.301 eV and −2.142 eV, respectively. Furthermore, CuO modification is insensitive to CO2 adsorption, demonstrating excellent selectivity. Structural and electronic analyses reveal that CuO modification reduces the band gap of SnS monolayers from 1.465 eV to 0.635 eV, improving the electrical conductivity and electron transfer, thereby enhancing the gas adsorption sensitivity. Further analyses highlight significant electronic interactions and charge transfer mechanisms between CuO-SnS monolayers and NO2 and SO2 molecules, indicating strong orbital hybridization. In conclusion, this study provides a theoretical basis for developing high-performance gas sensors, showing that CuO-SnS monolayers have great potential for detecting toxic gases. Full article
(This article belongs to the Special Issue Chemical Sensors for Toxic Chemical Detection: 2nd Edition)
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Review

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26 pages, 1941 KiB  
Review
Boron-Doped Diamond Electrodes for Toxins Sensing in Environmental Samples—A Review
by Aleksandar Mijajlović, Vesna Stanković, Tijana Mutić, Sladjana Djurdjić, Filip Vlahović and Dalibor Stanković
Sensors 2025, 25(7), 2339; https://doi.org/10.3390/s25072339 - 7 Apr 2025
Viewed by 304
Abstract
Boron-doped diamond electrodes have found applications in the detection, monitoring, and mitigation of toxic chemicals resulting from various industries and human activities. The boron-doped diamond electrode is a widely applicable technology in this field, primarily due to its excellent surface characteristics: minimal to [...] Read more.
Boron-doped diamond electrodes have found applications in the detection, monitoring, and mitigation of toxic chemicals resulting from various industries and human activities. The boron-doped diamond electrode is a widely applicable technology in this field, primarily due to its excellent surface characteristics: minimal to no adsorption, a wide operating potential range, robustness, and high selectivity. These extraordinary properties can be further enhanced through surface termination, which can additionally improve the analytical performance of boron-doped diamond (BDD) electrodes. The high accuracy and precision of the developed methods indicate the broad practical applicability of these electrodes across various sample matrices. Some studies have shown that different strategies can lead to enhanced sensitivity and selectivity, such as modifying the electrode surface (nanostructuring), forming different composite materials based on BDD, or implementing miniaturization techniques. Thus, this review summarizes the recent literature on the electroanalytical applications of BDDE surfaces, with a particular focus on environmental applications. Full article
(This article belongs to the Special Issue Chemical Sensors for Toxic Chemical Detection: 2nd Edition)
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