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Advanced Nanomaterials for Sensing
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Advanced Nanomaterials for Sensing

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

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1629

Special Issue Editors

Dr. Navpreet Kaur

E-Mail Website
Guest Editor
Sensor Laboratory, University of Brescia and INSTM UdR Brescia, Via D. Valotti 9, 25133 Brescia, Italy
Interests: metal oxide; nanostructures; heterostructures; gas/chemical sensors; self-assemble monolayer; graphene oxide
Special Issues, Collections and Topics in MDPI journals
Dr. Mandeep Singh

E-Mail Website
Guest Editor
Department of Physics, Politecnico Di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
Interests: metal oxide; nanostructures; gas/chemical sensors; biosensor; self-assemble monolayer; graphene oxide

Special Issue Information

Dear Colleagues,

Advanced nanomaterials (organic or inorganic), such as graphene, 2D carbides and nitrides (MXenes), metal–organic framework (MOF), nano-heterostructures (core–shell, 3D branch-like, etc.) and so on, represent an ultrasensitive platform for developing next-generation sensing devices. In particular, their unique functional properties, such as high surface-to-volume ratio, porosity and exceptional physical/chemical properties, allow the selective detection of various chemical analytes, such as VOCs, environmental pollutants, biomolecules, etc. This Special Issue focuses on the synthesis, characterization and exploration of the functional properties of these advanced nanostructured materials for sensing applications. Moreover, the reports on novel strategies (surface functionalization, metal particle decorations, doping, etc.) that are used to enhance the performance of traditional sensing materials, such as nanostructured metal oxides, are also welcome.

Dr. Navpreet Kaur
Dr. Mandeep Singh
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. 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

  • gas sensors
  • biosensors
  • optical sensors
  • metal oxides
  • nanostructures
  • graphene
  • metal–organic framework (MOF)
  • MXenes
  • heterostructures
  • core–shell structures
  • self-assembly

Published Papers (1 paper)

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Review

25 pages, 21443 KiB  
Review
Disclosing Fast Detection Opportunities with Nanostructured Chemiresistor Gas Sensors Based on Metal Oxides, Carbon, and Transition Metal Dichalcogenides
by Michele Galvani, Sonia Freddi and Luigi Sangaletti
Sensors 2024, 24(2), 584; https://doi.org/10.3390/s24020584 - 17 Jan 2024
Viewed by 809
Abstract
With the emergence of novel sensing materials and the increasing opportunities to address safety and life quality priorities of our society, gas sensing is experiencing an outstanding growth. Among the characteristics required to assess performances, the overall speed of response and recovery is [...] Read more.
With the emergence of novel sensing materials and the increasing opportunities to address safety and life quality priorities of our society, gas sensing is experiencing an outstanding growth. Among the characteristics required to assess performances, the overall speed of response and recovery is adding to the well-established stability, selectivity, and sensitivity features. In this review, we focus on fast detection with chemiresistor gas sensors, focusing on both response time and recovery time that characterize their dynamical response. We consider three classes of sensing materials operating in a chemiresistor architecture, exposed to the most investigated pollutants, such as NH3, NO2, H2S, H2, ethanol, and acetone. Among sensing materials, we first selected nanostructured metal oxides, which are by far the most used chemiresistors and can provide a solid ground for performance improvement. Then, we selected nanostructured carbon sensing layers (carbon nanotubes, graphene, and reduced graphene), which represent a promising class of materials that can operate at room temperature and offer many possibilities to increase their sensitivities via functionalization, decoration, or blending with other nanostructured materials. Finally, transition metal dichalcogenides are presented as an emerging class of chemiresistive layers that bring what has been learned from graphene into a quite large portfolio of chemo-sensing platforms. For each class, studies since 2019 reporting on chemiresistors that display less than 10 s either in the response or in the recovery time are listed. We show that for many sensing layers, the sum of both response and recovery times is already below 10 s, making them promising devices for fast measurements to detect, e.g., sudden bursts of dangerous emissions in the environment, or to track the integrity of packaging during food processing on conveyor belts at pace with industrial production timescales. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Sensing)
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