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 2836

Special Issue Editors


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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

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

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Keywords

  • electrochemical sensors
  • screen-printing technology
  • food quality control
  • clinical analysis
  • environmental monitoring

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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
Cited by 1 | Viewed by 2175
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
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