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Surfaces
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Surfaces on Emerging Chemical Sensing Applications
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Surfaces on Emerging Chemical Sensing Applications

A special issue of Surfaces (ISSN 2571-9637).

Deadline for manuscript submissions: closed (1 December 2021) | Viewed by 14619

Special Issue Editors

Dr. Anderson A. Felix

E-Mail Website
Guest Editor
Coontrol Company, Rio do Sul, SC, Brazil
Interests: chemical and gas sensing; giant dielectric materials; 2D nanomaterials; surface engineering; surface chemistry
Prof. Dr. Marcelo Ornaghi Orlandi

E-Mail Website
Guest Editor
Department of Engineering, Physics and Mathematics, Chemistry Institute, São Paulo State University (UNESP), Araraquara, São Paulo 14800-060, Brazil
Interests: chemical sensors; nanomaterials; transport measurements; electron microscopy

Special Issue Information

Dear Colleagues,

In the recent years, the growing demand for sensing and/or monitoring in environmental and biological systems has led to the development of new chemical sensing technologies. These emerging chemical sensors have been employed in different areas, ranging from air quality monitoring for toxic and explosive gases up to biomarker species in the diagnostics of human diseases, among others. Thus, this Special Issue is devoted to reports of relevant scientific and technological developments on the processing, manufacturing, and evaluation of chemical sensors. Potential topics include, but are not limited to, novel synthesis routes or approaches aiming improved sensing performance, advances in the manufacturing of nanosensor-based devices, in situ and in operando characterization approaches for sensing mechanisms, and theoretical and computational studies in sensing phenomenology, among others. Submissions describing sensors based on SMOx, polymers, carbon, biological materials, and 2D-nanomaterials, among others, using electrical, electromagnetic, chemical, and optical principles are encouraged.

Dr. Anderson A. Felix
Prof. Dr. Marcelo Ornaghi Orlandi
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. Surfaces is an international peer-reviewed open access quarterly 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 1600 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

  • synthesis and processing of sensing nanomaterials
  • manufacturing nanosensor technologies
  • novel sensing phenomenology, mechanisms, and detection principles
  • gas, humidity, and VOC sensors
  • biosensors and electrochemical sensors
  • infrared, electromagnetic, and optical sensors
  • MEMS, NEMS, and BioMEMS
  • smart and intelligent sensors
  • theoretical and computational studies in sensing phenomenology
  • in situ and in operando sensing characterization

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Editorial

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3 pages, 214 KiB  
Editorial
Emerging Chemical Sensing Technologies: Recent Advances and Future Trends
by Anderson A. Felix and Marcelo O. Orlandi
Surfaces 2022, 5(2), 318-320; https://doi.org/10.3390/surfaces5020023 - 31 May 2022
Cited by 1 | Viewed by 1768
Abstract
Contemporary chemical sensing research is rapidly growing, leading to the development of new technologies for applications in almost all areas, including environmental monitoring, disease diagnostics and food quality control, among others [...] Full article
(This article belongs to the Special Issue Surfaces on Emerging Chemical Sensing Applications)

Research

Jump to: Editorial

10 pages, 26795 KiB  
Article
Electrochemical Detection of Dinitrobenzene on Silicon Electrodes: Toward Explosives Sensors
by Essam M. Dief, Natasha Hoffmann and Nadim Darwish
Surfaces 2022, 5(1), 218-227; https://doi.org/10.3390/surfaces5010015 - 4 Mar 2022
Cited by 6 | Viewed by 3354
Abstract
Detection of explosives is vital for protection and criminal investigations, and developing novel explosives’ sensors stands at the forefront of the analytical and forensic chemistry endeavors. Due to the presence of terminal nitro groups that can be electrochemically reduced, nitroaromatic compounds (NACs) have [...] Read more.
Detection of explosives is vital for protection and criminal investigations, and developing novel explosives’ sensors stands at the forefront of the analytical and forensic chemistry endeavors. Due to the presence of terminal nitro groups that can be electrochemically reduced, nitroaromatic compounds (NACs) have been an analytical target for explosives’ electrochemical sensors. Various electrode materials have been used to detect NACs in solution, including glassy carbon electrodes (GCE), platinum (Pt), and gold (Au) electrodes, by tracking the reversible oxidation/reduction properties of the NACs on these electrodes. Here, we show that the reduction of dinitrobenzene (DNB) on oxide-free silicon (Si–H) electrodes is irreversible with two reduction peaks that disappear within the successive voltammetric scanning. AFM imaging showed the formation of a polymeric film whose thickness scales up with the DNB concentration. This suggest that Si–H surfaces can serve as DNB sensors and possibly other explosive substances. Cyclic voltammetry (CV) measurements showed that the limit of detection (LoD) on Si–H is one order of magnitude lower than that obtained on GCE. In addition, EIS measurements showed that the LoD of DNB on Si–H is two orders of magnitude lower than the CV method. The fact that a Si–H surface can be used to track the presence of DNB makes it a suitable surface to be implemented as a sensing platform. To translate this concept into a sensor, however, it would require engineering and fabrication prospect to be compatible with the current semiconductor technologies. Full article
(This article belongs to the Special Issue Surfaces on Emerging Chemical Sensing Applications)
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15 pages, 4337 KiB  
Article
Electrochemical Biosensor Based on Laser-Induced Graphene for COVID-19 Diagnosing: Rapid and Low-Cost Detection of SARS-CoV-2 Biomarker Antibodies
by Marcely Echeverria Oliveira, Bruno Vasconcellos Lopes, Jéssica Helisa Hautrive Rossato, Guilherme Kurz Maron, Betty Braga Gallo, Andrei Borges La Rosa, Raphael Dorneles Caldeira Balboni, Mariliana Luiza Ferreira Alves, Marcos Roberto Alves Ferreira, Luciano da Silva Pinto, Fabricio Rochedo Conceição, Evandro Piva, Claudio Martin Pereira de Pereira, Marcia Tsuyama Escote and Neftali Lenin Villarreal Carreño
Surfaces 2022, 5(1), 187-201; https://doi.org/10.3390/surfaces5010012 - 1 Mar 2022
Cited by 20 | Viewed by 5282
Abstract
The severe acute respiratory syndrome originated by the new coronavirus (SARS-CoV-2) that emerged in late 2019, known to be a highly transmissible and pathogenic disease, has caused the COVID-19 global pandemic outbreak. Thus, diagnostic devices that help epidemiological public safety measures to reduce [...] Read more.
The severe acute respiratory syndrome originated by the new coronavirus (SARS-CoV-2) that emerged in late 2019, known to be a highly transmissible and pathogenic disease, has caused the COVID-19 global pandemic outbreak. Thus, diagnostic devices that help epidemiological public safety measures to reduce undetected cases and isolation of infected patients, in addition to significantly help to control the population’s immune response to vaccine, are required. To address the negative issues of clinical research, we developed a Diagnostic on a Chip platform based on a disposable electrochemical biosensor containing laser-induced graphene and a protein (SARS-CoV-2 specific antigen) for the detection of SARS-CoV-2 antibodies. The biosensors were produced via direct laser writing using a CO2 infrared laser cutting machine on commercial polyimide sheets. The presence of specific antibodies reacting with the protein and the K3[Fe(CN)6] redox indicator produced characteristic and concentration-dependent electrochemical signals, with mean current values of 9.6757 and 8.1812 µA for reactive and non-reactive samples, respectively, proving the effectiveness of testing in clinical samples of serum from patients. Thus, the platform is being expanded to be measured in a portable microcontrolled potentiostat to be applied as a fast and reliable monitoring and mapping tool, aiming to assess the vaccinal immune response of the population. Full article
(This article belongs to the Special Issue Surfaces on Emerging Chemical Sensing Applications)
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16 pages, 3982 KiB  
Article
Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles
by Bruno S. de Lima, Amanda A. Komorizono, Amadou L. Ndiaye, Maria Inês B. Bernardi, Jérôme Brunet and Valmor R. Mastelaro
Surfaces 2022, 5(1), 127-142; https://doi.org/10.3390/surfaces5010006 - 21 Jan 2022
Cited by 8 | Viewed by 3357
Abstract
Here, we discuss the effect of In2O3 nanoparticles on the reduced graphene oxide (rGO) gas-sensing potentialities. In2O3 nanoparticles were prepared with the polymer precursors method, while the nanocomposites were prepared by mixing an In2O3 [...] Read more.
Here, we discuss the effect of In2O3 nanoparticles on the reduced graphene oxide (rGO) gas-sensing potentialities. In2O3 nanoparticles were prepared with the polymer precursors method, while the nanocomposites were prepared by mixing an In2O3 nanoparticle suspension with an rGO suspension in different proportions. The gas-sensing performance of our materials was tested by exposing our materials to known concentrations of a target toxic gas in a dry airflow. Our results demonstrate that In2O3 nanoparticles enhance the rGO sensitivity for strong oxidizing species such as O3 and NO2, while a negative effect on its sensitivity for NH3 sensing is observed. Furthermore, our measurements towards H2S suggest that the concentration of In2O3 nanoparticles can induce an uncommon transition from p-type to n-type semiconductor nature when rGO–In2O3 nanocomposites operate at temperatures close to 160 °C. Full article
(This article belongs to the Special Issue Surfaces on Emerging Chemical Sensing Applications)
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