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Recent Advances and Applications of Gas Sensors

A Special Issue of Sensors (ISSN 1424-8220) belonging to the section "Physical Sensors".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 690

Editors


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Guest Editor
Institute of Chemistry, São Paulo State University (UNESP), Araraquara 14800-060, SP, Brazil
Interests: optical sensors; gas sensors; smartphone-based sensors; optoelectronic noses; miniaturization; microfluidics; environmental analysis; environmental analytical chemistry; environmental monitoring; climate change; mass spectrometry; spectrometry; analytical chemistry
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Institute of Chemistry, Federal University of Uberlândia, Uberlândia 8408-100, MG, Brazil
Interests: colorimetric and fluorimetric sensors; analytical instrumentation; internet of analytical things (IoAT); miniaturization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gas analysis is a multidisciplinary field of high relevance in environmental monitoring, healthcare diagnostics, industrial process control, and the forensic sciences. In recent years, considerable efforts have been dedicated to the development of gas sensing platforms that combine low cost, miniaturization, portability, and real-time analysis while maintaining suitable selectivity, sensitivity, and robustness. In parallel, the use of benchtop “gold-standard” instrumentation remains essential for fundamental investigations, validation studies, and the development of novel sensing strategies.

This Special Issue will gather recent advances in gas sensing technologies, analytical methodologies, and applications involving gaseous and volatile compounds. Contributions addressing both fundamental and applied aspects of gas analysis are welcome.

Potential topics include, but are not limited to, the following:

  • Gaseous and volatile compound analysis;
  • Advances in gas sensor instrumentation;
  • Colorimetric and fluorometric indirect gas sensors;
  • Optical gas sensors (e.g., TDLAS, MIR, NIR, PAS, and cavity-enhanced sensors);
  • Electrochemical and semiconductor-based gas sensors (e.g., MOX sensors);
  • Advances in sample preparation and preconcentration strategies for gas analysis;
  • Miniaturized and portable gas sensing devices, including drone-based methods;
  • Health monitoring and biomedical applications;
  • Environmental monitoring (indoor and outdoor);
  • Industrial process monitoring and safety applications;
  • Forensic applications of gas sensing;
  • Emerging sensing materials and hybrid sensing platforms;
  • Artificial intelligence and chemometric approaches for gas sensor data analysis.

Dr. João Flávio Da Silveira Petruci
Prof. Dr. Sidnei Gonçalves Da Silva
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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
  • environmental analysis
  • health monitoring
  • sample preparation
  • instrumentation
  • analytical chemistry

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Published Papers (1 paper)

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Research

30 pages, 8144 KB  
Article
Defect-Driven Selectivity Inversion in ZnO Gas Sensors via Y3+ and Dy3+ Doping for Enhanced VOC Detection with a Suppressed NO2 Response
by Imen Massoudi, Driss Lahem, Marc Debliquy, Norah Abdullah Algarou, Reem Khalid Aldakheel, Norah Alonizan, Amor Ben Ali, Muhammad Younas, Bayan Almohsen, Talal F. Qahtan and Fatemah M. Barakat
Sensors 2026, 26(15), 4675; https://doi.org/10.3390/s26154675 - 23 Jul 2026
Cited by 1 | Viewed by 430
Abstract
In this work, we demonstrate a defect-mediated strategy to fundamentally reprogram the selectivity of ZnO gas sensors through targeted doping with two types of trivalent rare-earth ions. We incorporate yttrium (Y3+) and dysprosium (Dy3+) into the ZnO host via [...] Read more.
In this work, we demonstrate a defect-mediated strategy to fundamentally reprogram the selectivity of ZnO gas sensors through targeted doping with two types of trivalent rare-earth ions. We incorporate yttrium (Y3+) and dysprosium (Dy3+) into the ZnO host via a high-energy ball-milling (HEBM)-assisted solid-state reaction. On the basis of structural, optical, and spectroscopic characterizations, we demonstrate a significant increase in the oxygen vacancy density and a reduction in the band gap energy. The gas sensing tests revealed a remarkable inversion of selectivity: while doping suppressed the NO2 response by 86% to 94%, it increased the sensitivity to VOCs. Dy doping produced a selective sensor for ethanol (S = 9.61, 5.62 × selectivity over NO2), and Y doping produced a selective sensor for acetone (S = 8.27, 2 × selectivity over NO2). This dopant-specific defect engineering provides a direct pathway to adapt ZnO sensors to the selective detection of VOCs in environmental monitoring. Full article
(This article belongs to the Special Issue Recent Advances and Applications of Gas Sensors)
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