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Chemosensors
Special Issues
Advances in Screen-Printed Electrode & Electrochemical Sensor Applications
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Advances in Screen-Printed Electrode & Electrochemical Sensor Applications

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Electrochemical Devices and Sensors".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 2153

Special Issue Editors

Dr. João G. Pacheco

E-Mail Website
Guest Editor
REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal
Interests: molecularly imprinted polymers; electrochemical sensors; inkjet imprinted electrodes; environmental applications
Special Issues, Collections and Topics in MDPI journals
Dr. Hendrikus Petrus Antonius Nouws

E-Mail Website
Guest Editor
REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal
Interests: electroanalytical methodologies for pharmaceutical, clinical, environmental and food applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In the last decade a vast investment and research in sensing technology has been made. Due to their excellent sensitivity, rapid response, simplicity, low cost and portability, electrochemical sensors are involved in a wide variety applications in analytical chemistry. They are easy to miniaturize and to integrate into automatic systems. The screen-printing technology presents several advantages for the fabrication of electrochemical sensors. It allows the fabrication of a wide range of geometries, mass production at low cost, disposability, and portability. The combination of screen-printing technology with electrochemical sensors is promising for commercial purposes. The topics covered in this Special Issue represent recent innovations in the construction of electrochemical sensors on screen printed electrodes and application to different fields, such has food, clinical and environmental analysis. Different recognition elements can be used: biological (enzymatic, antibodies, aptamers, etc.) and chemical (molecularly imprinted polymers). Both review and original research articles are welcomed, highlighting the latest developments and future challenges in this exciting field.

Dr. João Pacheco
Dr. Hendrikus Petrus Antonius Nouws
Guest Editors

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. Chemosensors is an international peer-reviewed open access monthly 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
  • screen-printing technology
  • food quality control
  • clinical analysis
  • environmental monitoring

Published Papers (1 paper)

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Research

17 pages, 4399 KiB  
Article
Graphene-Based Electrodes for Monitoring of Estradiol
by Auwal M. Musa, Janice Kiely, Richard Luxton and Kevin C. Honeychurch
Chemosensors 2023, 11(6), 337; https://doi.org/10.3390/chemosensors11060337 - 6 Jun 2023
Viewed by 1563
Abstract
This study explores the potential use of graphene-based electrodes in the electrochemical determination of estradiol using amperometric techniques as a simple, enzyme-free approach. Graphene, a carbon-based nanomaterial, has been extensively investigated in materials science as a sensing material. Its remarkable properties, such as [...] Read more.
This study explores the potential use of graphene-based electrodes in the electrochemical determination of estradiol using amperometric techniques as a simple, enzyme-free approach. Graphene, a carbon-based nanomaterial, has been extensively investigated in materials science as a sensing material. Its remarkable properties, such as its high electron mobility and conductivity, robust mechanical characteristics, and good surface-to-volume ratio, have led to its adoption in numerous applications, including electrochemical sensing. Estradiol is a crucial sex hormone that affects metabolism and reproduction. However, excessive amounts may disrupt endocrine functions. Electrochemical sensors suffer from electrode fouling, leading to passivation that ultimately affects performance. We exploit the inherent properties of various types of graphene-based electrodes, including graphene screen-printed electrodes (GHSPE), electrochemically exfoliated graphene-modified electrodes (EEFGHSPE), and 3D graphene foam screen-printed electrodes (3D-GFSPE), for the amperometric studies. The electrochemical properties and structural characteristics of these sensors are evaluated using cyclic voltammetry and scanning electron microscopy. The analytical performance of these sensors is at an applied potential of +0.65 V (vs. Ag/AgCl) over the concentration range 0.83 to 4.98 μM estradiol. Sensitivities of 0.151 µAµM−1 cm−2, 0.429 µAµM−1 cm−2, and 0.273 µA µM−1 cm−2, with detection limits of 0.0041 µM, 0.097 µM, and 0.018 µM (S/N = 3), are found for GHPSPE, 3D-GFSPE and EEFGHSPE, respectively. The possibility of amperometrically determining the estradiol levels in a potable tap water sample are then investigated over the concentration range 0.83–4.98 µM. Full article
(This article belongs to the Special Issue Advances in Screen-Printed Electrode & Electrochemical Sensor Applications)
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