Functionalized Material-Based Gas Sensing

A special issue of Chemosensors (ISSN 2227-9040). This special issue belongs to the section "Materials for Chemical Sensing".

Deadline for manuscript submissions: 25 October 2025 | Viewed by 2252

Special Issue Editor


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Guest Editor
School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
Interests: gas sensors; flexible devices; intelligent recognition

Special Issue Information

Dear Colleagues,

Material-functionalized gas sensors will have broad application prospects in the future. With the continuous progress of science and technology, chemical sensors will be able to realize the more efficient, more sensitive and faster detection of target gases and adapt to more complex environments. At the same time, with the continuous development of Internet of Things (IoT) technology, it will be possible to better integrate chemical sensors with smart devices to realize remote monitoring and intelligent management. Material-functionalized gas sensors, as a cutting-edge research field, involve the cross-fertilization of multiple disciplines, including chemistry, electronic information, physics, artificial intelligence, and so on. In particular, the continuous emergence of new functionalized materials such as nanomaterials, biocompatible materials, flexible wearable materials, smart materials, etc., brings new opportunities and challenges to the field. These functionalized materials lay a good foundation for the intelligentization and miniaturization of gas sensors. They are expected to be widely used in the fields of smart medicine, public environment, and aerospace.

This Special Issue is dedicated to the latest original research articles on material-functionalized gas sensors. The aim of this Special Issue is to discuss the advantages of new functionalized materials in the field of gas sensors through the presentation of articles covering new functionalized materials, fabrication, testing, and applications.

Dr. Yinglin Wang
Guest Editor

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Keywords

  • functionalized materials
  • flexible materials
  • bio-friendly materials
  • gas sensors
  • smart identification

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Published Papers (1 paper)

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Research

11 pages, 5146 KiB  
Communication
Achieving Optical Ozone Sensing with Increased Response and Recovery Speed by Using Highly Dispersed CdSe/ZnS Quantum Dots in Porous Glass
by Masanori Ando, Hideya Kawasaki, Satoru Tamura and Yasushi Shigeri
Chemosensors 2024, 12(12), 254; https://doi.org/10.3390/chemosensors12120254 - 5 Dec 2024
Viewed by 1144
Abstract
CdSe/ZnS quantum dots (QDs) that were highly dispersed in porous glass showed a rapid decrease in the intensity of their photoluminescence (PL) in response to ozone at concentrations of 0–200 ppm in air (at room temperature and atmospheric pressure), followed by a similarly [...] Read more.
CdSe/ZnS quantum dots (QDs) that were highly dispersed in porous glass showed a rapid decrease in the intensity of their photoluminescence (PL) in response to ozone at concentrations of 0–200 ppm in air (at room temperature and atmospheric pressure), followed by a similarly rapid recovery to full PL in air with no ozone. The response time of the PL quenching in the presence of ozone, and the recovery time to full PL in air after the ozone was removed, showed little dependence on the ozone concentration. Compared to conventional CdSe/ZnS QD films on planar glass substrates, the speed of ozone-induced decrease in the PL intensity of QDs increased, and the recovery speed of the PL intensity, once the ozone was removed from the air, was even more rapid compared to the recovery on planar glass. The 100% PL intensity recovery time in air was reduced to about 10% for CdSe/ZnS QDs that were dispersed in porous glass compared to CdSe/ZnS QD films on planar glass substrates. We hypothesize that this reflects the fact that ozone molecules that are adsorbed on the QD-layer-lined pore surfaces are quickly desorbed in ozone-free air, because the layer of CdSe/ZnS QDs is much thinner in the pores of porous glass than on a planar glass substrate. Thus, CdSe/ZnS QDs that were dispersed in porous glass showed a rapid response to ozone and a similarly rapid recovery in ozone-free air, which has not been seen in previous QD ozone gas sensors, indicating that they are promising as high-performance optical ozone sensor materials. Full article
(This article belongs to the Special Issue Functionalized Material-Based Gas Sensing)
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