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Gas Sensing for Air Quality Monitoring

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

Deadline for manuscript submissions: 31 July 2025 | Viewed by 468

Special Issue Editors


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Guest Editor
School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Interests: machine olfaction; electronic noise; sensor fusion
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China
Interests: gas sensor; microsensor; biosensor

E-Mail Website
Guest Editor
Higher Educational Key Laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China
Interests: gas sensor; microsensor; flexibile sensor

Special Issue Information

Dear Colleagues,

Air quality monitoring is an important research topic in the fields of environmental protection and public safety. Gas sensing technology, as the primary means, is facing rapid development in both basic theory and practical applications. To deeply explore the latest scientific progress of gas sensing technology and promote its widespread application in air quality monitoring, we have specifically planned this Special Issue. This Special Issue aims to gather top scholars in the field and share latest research findings, discuss scientific challenges, and envision future development paths for gas sensing technology in air quality monitoring.

In this context, this Special Issue of "Gas Sensing for Air Quality Monitoring" invites original research and comprehensive reviews including, but not limited to, the following topics:
1. Gas sensing mechanisms and materials: In-depth analyses of interaction mechanisms between gas molecules and sensing materials exploring the development and application of novel sensing materials, such as nanomaterials and polymer materials.
2. Sensor design and optimization: The design of high-performance gas sensors based on physical, chemical, and biological sensing principles, and discussions on scientific methods for structural optimization and performance enhancement.
3. Sensor signal processing and data analysis: Research on algorithms for processing gas sensing signals to improve data accuracy and reliability and on the utilization of big data and artificial intelligence technologies to realize intelligent analysis and early warning of air quality monitoring data.
4. Simultaneous monitoring of multiple gasses: Research on the scientific principles and methods for the simultaneous monitoring of multi-component gasses and the exploration of the design, optimization, and application of sensor arrays in complex environments.
5. Particulate matter and gas co-monitoring: Combining particulate matter monitoring and gas sensing technology to build a scientific framework for co-monitoring systems to achieve comprehensive, accurate, and real-time air quality monitoring.
6. Environmental adaptability research: Discussions on the adaptability of gas sensing systems in extreme environments with proposed scientific solutions.

Dr. Yinsheng Chen
Prof. Dr. Yunbo Shi
Dr. Wenjie Zhao
Guest Editors

Manuscript Submission Information

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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

  • machine learning
  • machine olfaction
  • electronic nose
  • gas detection
  • concentration estimation
  • deep learning
  • signal processing
  • gas sensitive material

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Published Papers (1 paper)

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Research

17 pages, 27216 KiB  
Article
Pt/Ru-Modified ZnO Sensor Grown In Situ for Detection of ppb H2S
by Jianhua Zhang, Yunbo Shi, Bolun Tang and Canda Zheng
Sensors 2025, 25(7), 1995; https://doi.org/10.3390/s25071995 - 22 Mar 2025
Viewed by 152
Abstract
This paper presents a ZnO-Pt/Ru sensor prepared by a two-step hydrothermal method with in situ-grown ZnO nanorods and doped with Pt and Ru elements by immersion sintering. Characterization results showed that Pt and Ru were successfully modified on the surface of ZnO nanorods. [...] Read more.
This paper presents a ZnO-Pt/Ru sensor prepared by a two-step hydrothermal method with in situ-grown ZnO nanorods and doped with Pt and Ru elements by immersion sintering. Characterization results showed that Pt and Ru were successfully modified on the surface of ZnO nanorods. ZnO-Pt/Ru achieved a response of 25–50 ppm H2S at the optimum operating temperature of 198 °C. In addition, the lower limit of H2S detection of ZnO-Pt/Ru reached 50 ppb with a response of about 10%, indicating a wide concentration detection range. Due to the good catalytic properties of Pt, the recovery characteristics of ZnO at high concentrations of H2S were significantly improved. The response time of ZnO-Pt/Ru (30 s) was also significantly shorter than pristine ZnO (56 s), with excellent selectivity. As far as the gas-sensitive enhancement mechanism is concerned, at the macroscopic level, the ZnO surface was modified by Pt and Ru, and this special structure of ZnO-Pt/Ru significantly increased the specific surface area. At the microscopic level, the PN junction formed between Pt/Ru and ZnO provided abundant holes for electron migration. Full article
(This article belongs to the Special Issue Gas Sensing for Air Quality Monitoring)
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