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Nanomaterials
Special Issues
Nanostructured Materials in Gas Sensing Applications
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Nanostructured Materials in Gas Sensing Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: 20 August 2024 | Viewed by 2476

Special Issue Editor

Prof. Dr. Dan Meng

E-Mail Website
Guest Editor
School of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, China
Interests: functional materials; gas sensors

Special Issue Information

Dear Colleagues,

Due to several advantages, a variety of nanomaterials have been studied for gas sensing applications, including nanoparticles, nanowires, nanotubes, and graphene. These materials have been functionalized with various chemical moieties to increase their sensitivity and selectivity for target gases. The resulting sensors have been shown to have low detection limits, fast response times, and high stability over extended periods of use. Additionally, the integration of nanomaterials with microelectronic devices has enabled the development of low-power and highly miniaturized gas sensors. This has paved the way for their use in portable and wearable devices for the real-time monitoring of environmental and industrial gases. This Special Issue aims to collect papers on sensor-based nanomaterials for the effective detection of various dangerous gases. Authors are invited to submit articles that focus on selective enhancement, low power consumption, fast responses, and other aspects. Papers on the characterization and evaluation of sensing performance or the completion of gas-sensitive mechanistic discussions of experimental phenomena are also welcome.

Prof. Dr. Dan Meng
Guest Editor

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. Nanomaterials 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 2900 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
  • nanomaterials
  • metal oxide- and carbon-based sensors
  • novel materials
  • leakage detection
  • low power consumption
  • sensitivity mechanism analysis

Published Papers (2 papers)

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Research

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16 pages, 4979 KiB  
Article
In Situ Fabrication of SnS2/SnO2 Heterostructures for Boosting Formaldehyde−Sensing Properties at Room Temperature
by Dan Meng, Zongsheng Xie, Mingyue Wang, Juhua Xu, Xiaoguang San, Jian Qi, Yue Zhang, Guosheng Wang and Quan Jin
Nanomaterials 2023, 13(17), 2493; https://doi.org/10.3390/nano13172493 - 04 Sep 2023
Cited by 4 | Viewed by 1017
Abstract
Formaldehyde, as a harmful gas produced by materials used for decorative purposes, has a serious impact on human health, and is also the focus and difficulty of indoor environmental polution prevention; hence, designing and developing gas sensors for the selective measurement of formaldehyde [...] Read more.
Formaldehyde, as a harmful gas produced by materials used for decorative purposes, has a serious impact on human health, and is also the focus and difficulty of indoor environmental polution prevention; hence, designing and developing gas sensors for the selective measurement of formaldehyde at room temperature is an urgent task. Herein, a series of SnS2/SnO2 composites with hollow spherical structures were prepared by a facile hydrothermal approach for the purpose of formaldehyde sensing at room temperature. These novel hierarchical structured SnS2/SnO2 composites−based gas sensors demonstrate remarkable selectivity towards formaldehyde within the concentration range of sub-ppm (0.1 ppm) to ppm (10 ppm) at room temperature. Notably, the SnS2/SnO2−2 sensor exhibits an exceptional formaldehyde-sensing performance, featuring an ultra-high response (1.93, 0.1 ppm and 17.51, 10 ppm), as well as good repeatability, long-term stability, and an outstanding theoretical detection limit. The superior sensing capabilities of the SnS2/SnO2 composites can be attributed to multiple factors, including enhanced formaldehyde adsorption, larger specific surface area and porosity of the hollow structure, as well as the synergistic interfacial incorporation of the SnS2/SnO2 heterojunction. Overall, the excellent gas sensing performance of SnS2/SnO2 hollow spheres has opened up a new way for their detection of trace formaldehyde at room temperature. Full article
(This article belongs to the Special Issue Nanostructured Materials in Gas Sensing Applications)
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Review

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58 pages, 19582 KiB  
Review
Recent Advances of Graphene Quantum Dots in Chemiresistive Gas Sensors
by Xiaofeng Zhu, Yongzhen Li, Pei Cao, Peng Li, Xinzhu Xing, Yue Yu, Ruihua Guo and Hui Yang
Nanomaterials 2023, 13(21), 2880; https://doi.org/10.3390/nano13212880 - 30 Oct 2023
Cited by 1 | Viewed by 1188
Abstract
Graphene quantum dots (GQDs), as 0D graphene nanomaterials, have aroused increasing interest in chemiresistive gas sensors owing to their remarkable physicochemical properties and tunable electronic structures. Research on GQDs has been booming over the past decades, and a number of excellent review articles [...] Read more.
Graphene quantum dots (GQDs), as 0D graphene nanomaterials, have aroused increasing interest in chemiresistive gas sensors owing to their remarkable physicochemical properties and tunable electronic structures. Research on GQDs has been booming over the past decades, and a number of excellent review articles have been provided on various other sensing principles of GQDs, such as fluorescence-based ion-sensing, bio-sensing, bio-imaging, and electrochemical, photoelectrochemical, and electrochemiluminescence sensing, and therapeutic, energy and catalysis applications. However, so far, there is no single review article on the application of GQDs in the field of chemiresistive gas sensing. This is our primary inspiration for writing this review, with a focus on the chemiresistive gas sensors reported using GQD-based composites. In this review, the various synthesized strategies of GQDs and its composites, gas sensing enhancement mechanisms, and the resulting sensing characteristics are presented. Finally, the current challenges and future prospects of GQDs in the abovementioned application filed have been discussed for the more rational design of advanced GQDs-based gas-sensing materials and innovative gas sensors with novel functionalities. Full article
(This article belongs to the Special Issue Nanostructured Materials in Gas Sensing Applications)
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