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Potentiometric Sensors for Environmental, Industrial and Biomedical Applications
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Potentiometric Sensors for Environmental, Industrial and Biomedical Applications

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

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 4769

Special Issue Editor

Prof. Dr. Nikola Sakač

E-Mail Website
Guest Editor
Department of Environmental Engineering, Faculty of Geotechnical Engineering, University of Zagreb, Varaždin, Croatia
Interests: electrochemistry; chemical sensors; biosensors; electrochemical detection; QCM; pollutants; pathogens

Special Issue Information

Dear Colleagues,

Potentiometric sensors have the advantages of a small size, rapid response, ease of use, low cost, and resistance to color and turbid interferences. For these reasons, they have been extensively studied by researchers for many years.

Potentiometry has been injected with new vigor and has undergone a renaissance, with improvements in the detection limits and selectivity of ISEs, the introduction of new materials, and the use of nano-based materials and new sensing concepts, including sensor arrays, lab-on-a-chip, and paper-based sensors, as well as wearable sensors. These new breakthroughs encourage innovations in environmental, industrial, and biomedical sensing applications, including pollutants detection, (bio)markers, and specific analytes.

Therefore, this Special Issue aims to collate original research and review articles on the recent advances, technologies, solutions, applications, and new challenges in the field of potentiometric sensors for environmental, industrial, and biomedical applications.

Prof. Dr. Nikola Sakač
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 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

  • potentiometric sensors
  • pollutants detection
  • potentiometric sensor arrays
  • biosensors
  • paper-based sensing
  • lab-on-a-chip
  • wearable sensors
  • sensor arrays
  • nanomaterials-based sensing
  • point-of-care sensing
  • light-addressable potentiometric sensor
  • molecularly imprinted polymer

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Published Papers (3 papers)

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Research

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15 pages, 7183 KiB  
Article
Double Type Detection of Triiodide and Iodide Ions Using a Manganese(III) Porphyrin as Sensitive Compound
by Diana Anghel, Camelia Epuran, Ionela Fringu, Ion Fratilescu, Anca Lascu, Ana-Maria Macsim, Vlad Chiriac, Mihaela Gherban, Dana Vlascici and Eugenia Fagadar-Cosma
Sensors 2024, 24(17), 5517; https://doi.org/10.3390/s24175517 - 26 Aug 2024
Viewed by 837
Abstract
A paramagnetic A3B-type Mn(III)-porphyrin was synthesized and characterized by physical–chemical methods (UV-Vis, FT-IR, 1H-NMR spectroscopy). The obtained compound was tested as a sensitive material for the spectrophotometric and potentiometric detection of iodine species. Using UV-Vis spectroscopy, the triiodide anions could [...] Read more.
A paramagnetic A3B-type Mn(III)-porphyrin was synthesized and characterized by physical–chemical methods (UV-Vis, FT-IR, 1H-NMR spectroscopy). The obtained compound was tested as a sensitive material for the spectrophotometric and potentiometric detection of iodine species. Using UV-Vis spectroscopy, the triiodide anions could be detected with high precision in the concentration interval of 1.02 × 10−5 to 2.3 × 10−5 M, with an LOD of 9.44 × 10−6 M. The PVC-based electrode using DOP as a plasticizer showed a sensitivity toward iodide in a wide concentration range of 1.0 × 10−5 to 1.0 × 10−1 M, with an LOD of 8.0 × 10−6 M. Both methods are simple, low-cost, and efficient for the detection of iodine species in synthetic samples and pharmaceuticals. Full article
(This article belongs to the Special Issue Potentiometric Sensors for Environmental, Industrial and Biomedical Applications)
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14 pages, 3437 KiB  
Article
In Situ Preparation of Metallic Copper Nanosheets/Carbon Paper Sensitive Electrodes for Low-Potential Electrochemical Detection of Nitrite
by Xing Zhao, Guangfeng Zhou, Sitao Qin, Jingwen Zhang, Guanda Wang, Jie Gao, Hui Suo and Chun Zhao
Sensors 2024, 24(13), 4247; https://doi.org/10.3390/s24134247 - 29 Jun 2024
Viewed by 1110
Abstract
In the realm of electrochemical nitrite detection, the potent oxidizing nature of nitrite typically necessitates operation at high detection potentials. However, this study introduces a novel approach to address this challenge by developing a highly sensitive electrochemical sensor with a low reduction detection [...] Read more.
In the realm of electrochemical nitrite detection, the potent oxidizing nature of nitrite typically necessitates operation at high detection potentials. However, this study introduces a novel approach to address this challenge by developing a highly sensitive electrochemical sensor with a low reduction detection potential. Specifically, a copper metal nanosheet/carbon paper sensitive electrode (Cu/CP) was fabricated using a one-step electrodeposition method, leveraging the catalytic reduction properties of copper’s high occupancy d-orbital. The Cu/CP sensor exhibited remarkable performance in nitrite detection, featuring a low detection potential of −0.05 V vs. Hg/HgO, a wide linear range of 10~1000 μM, an impressive detection limit of 0.079 μM (S/N = 3), and a high sensitivity of 2140 μA mM−1cm−2. These findings underscore the efficacy of electrochemical nitrite detection through catalytic reduction as a means to reduce the operational voltage of the sensor. By showcasing the successful implementation of this strategy, this work sets a valuable precedent for the advancement of electrochemical low-potential nitrite detection methodologies. Full article
(This article belongs to the Special Issue Potentiometric Sensors for Environmental, Industrial and Biomedical Applications)
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Review

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18 pages, 3534 KiB  
Review
Recent Developments and Challenges in Solid-Contact Ion-Selective Electrodes
by Lili Gao, Ye Tian, Wenyue Gao and Guobao Xu
Sensors 2024, 24(13), 4289; https://doi.org/10.3390/s24134289 - 1 Jul 2024
Cited by 1 | Viewed by 2423
Abstract
Solid-contact ion-selective electrodes (SC-ISEs) have the advantages of easy miniaturization, even chip integration, easy carrying, strong stability, and more favorable detection in complex environments. They have been widely used in conjunction with portable, wearable, and intelligent detection devices, as well as in on-site [...] Read more.
Solid-contact ion-selective electrodes (SC-ISEs) have the advantages of easy miniaturization, even chip integration, easy carrying, strong stability, and more favorable detection in complex environments. They have been widely used in conjunction with portable, wearable, and intelligent detection devices, as well as in on-site analysis and timely monitoring in the fields of environment, industry, and medicine. This article provides a comprehensive review of the composition of sensors based on redox capacitive and double-layer capacitive SC-ISEs, as well as the ion–electron transduction mechanisms in the solid-contact (SC) layer, particularly focusing on strategies proposed in the past three years (since 2021) for optimizing the performance of SC-ISEs. These strategies include the construction of ion-selective membranes, SC layer, and conductive substrates. Finally, the future research direction and possibilities in this field are discussed and prospected. Full article
(This article belongs to the Special Issue Potentiometric Sensors for Environmental, Industrial and Biomedical Applications)
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