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Chemosensors
Special Issues
Nanotechnology-Based Bio(sensors): In COVID-19 Outbreak
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Nanotechnology-Based Bio(sensors): In COVID-19 Outbreak

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "(Bio)chemical Sensing".

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 6674

Special Issue Editors

Dr. Vasilica Badets

E-Mail Website
Guest Editor
Université de Strasbourg, Institut de Chimie, UMR CNRS 7177, 4 Rue Blaise Pascal, CS 90032, 67081 Strasbourg CEDEX, France
Interests: electrochemical biosensors; electrocatalysis; nanoparticles
Dr. Stéphane Arbault

E-Mail Website
Guest Editor
CNRS, Institute of Molecular Sciences, University of Bordeaux, UMR 5255, F-33400 Talence, France
Interests: electrode; electrochemiluminescence; bio-imaging

Special Issue Information

Dear Colleagues,

The world is facing the COVID-19 outbreak. This challenges both our private and personal life. We are all playing a role in the fight against this pandemic. Researchers in the field of chemistry and especially (bio)sensors are dedicating a part of their work to developing analytical tools for the rapid detection of COVID-19 virus.

Chemosensors is dedicating a Special Issue to nanotechnology for developing (bio)sensors. Although this concerns sensors developed for the detection of this virus, the Special Issue aims to include (bio)sensors targeting other analytes. In fact, in this issue, authors who have struggled and succeeded in using nano-based technology for developing all kind of sensors during the COVID-19 pandemic are encouraged to submit their work.

What is the current status of the nanotechnology and its use for developing (bio)sensors? Are the nano-objects still used to improve limit of detection? Is there any influence of the size and shape of the nano-objects on the analytical performances of the sensor? What is the nature of the nano-objects; are they metallic, semi-conductors, organic? Could their efficiency be altered by adjuvants, surfactants, ad-atoms? Besides the answers that experimental work could bring to these questions, diverse types of modelling (computational, micro-kinetic, etc.) are emerging as new tools to help understanding the benefits brought by nanotechnology.

In this frame, authors whose work could reply to some of these questions are invited to submit their article to this Special Issue of Chemosensors: “Nano-technology Based Bio(sensors): in Covid-19 Outbreak”.

Dr. Vasilica Badets
Dr. Stéphane Arbault
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

  • nanotechnology
  • sensors
  • biosensors
  • COVID-19

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Published Papers (2 papers)

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Research

15 pages, 4969 KiB  
Article
Nitrogen-Doped Graphene-Based Sensor for Electrochemical Detection of Piroxicam, a NSAID Drug for COVID-19 Patients
by Codruţa Varodi, Maria Coros, Florina Pogăcean, Alexandra Ciorîţă, Alexandru Turza and Stela Pruneanu
Chemosensors 2022, 10(2), 47; https://doi.org/10.3390/chemosensors10020047 - 27 Jan 2022
Cited by 12 | Viewed by 3389
Abstract
Nitrogen-doped graphene (NGr) was synthesized by the hydrothermal method using urea as a reducing and doping agent for graphene oxide (GO). The crystalline structure of GO was revealed by the XRD intense peak recorded at 2θ = 11.4°, indicating that the interlayer distance [...] Read more.
Nitrogen-doped graphene (NGr) was synthesized by the hydrothermal method using urea as a reducing and doping agent for graphene oxide (GO). The crystalline structure of GO was revealed by the XRD intense peak recorded at 2θ = 11.4°, indicating that the interlayer distance within the structure was large (d = 0.77 nm), and the number of layers (n) was 9. Further, the transformation of GO in NGr also led to the decrease in the interlayer distance and number of layers (d = 0.387 nm; n = 3). As indicated by elemental analysis, the concentration of nitrogen in the NGr sample was 6 wt%. Next, the comparison between the performance of bare GC and the graphene-modified electrode (NGr/GC) towards piroxicam (PIR) detection was studied. Significant differences were observed between the two electrodes. Hence, in the case of bare GC, the oxidation signal of PIR was very broad and appeared at a high potential (+0.7 V). In contrast, the signal recorded with the NGr/GC electrode was significantly higher (four times) and shifted towards lower potentials (+0.54 V), proving the electro-catalytic effect of nitrogen-doped graphene. The NGr/GC electrode was also tested for its ability to detect piroxicam in pharmaceutical drugs (Flamexin), giving excellent recoveries. Full article
(This article belongs to the Special Issue Nanotechnology-Based Bio(sensors): In COVID-19 Outbreak)
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9 pages, 5353 KiB  
Communication
Using MoS2/Fe3O4 as Ion-Electron Transduction Layer to Manufacture All-Solid-State Ion-Selective Electrode for Determination of Serum Potassium
by Yan Su, Ting Liu, Caiqiao Song, Aiqiao Fan, Nan Zhu, Bingbing Sun and Cheng Yang
Chemosensors 2021, 9(7), 155; https://doi.org/10.3390/chemosensors9070155 - 25 Jun 2021
Cited by 8 | Viewed by 2583
Abstract
As an essential electrolyte for the human body, the potassium ion (K+) plays many physiological roles in living cells, so the rapid and accurate determination of serum K+ is of great significance. In this work, we developed a solid-contact ion-selective [...] Read more.
As an essential electrolyte for the human body, the potassium ion (K+) plays many physiological roles in living cells, so the rapid and accurate determination of serum K+ is of great significance. In this work, we developed a solid-contact ion-selective electrode (SC-ISE) using MoS2/Fe3O4 composites as the ion-to-electron transducer to determine serum K+. The potential response measurement of MoS2/Fe3O4/K+-ISE shows a Nernst response by a slope of 55.2 ± 0.1 mV/decade and a low detection limit of 6.3 × 10−6 M. The proposed electrode exhibits outstanding resistance to the interference of O2, CO2, light, and water layer formation. Remarkably, it also presents a high performance in potential reproducibility and long-term stability. Full article
(This article belongs to the Special Issue Nanotechnology-Based Bio(sensors): In COVID-19 Outbreak)
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