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Nanomaterials
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Advanced Nanomaterials in Gas and Humidity Sensors: Second Edition
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Advanced Nanomaterials in Gas and Humidity Sensors: Second Edition

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

Deadline for manuscript submissions: closed (12 December 2025) | Viewed by 1629

Special Issue Editor

Dr. Yang Li

E-Mail Website
Guest Editor
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China
Interests: humidity sensors; gas sensors; flexible sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Gas and humidity sensing have undergone a significant transformation through the incorporation of advanced nanomaterials. The emergence of nanotechnology has provided unprecedented opportunities to enhance sensor performance and sensitivity. Nanomaterials have emerged as drivers for novel sensor development, offering superior selectivity, sensitivity, and response times when compared to those of conventional sensing materials. This research trend has generated substantial interest within both the scientific community and industry due to the escalating demand for efficient and dependable sensors for various applications, including environmental monitoring, industrial safety, healthcare, and consumer electronics.

This Special Issue is dedicated to exploring the latest advancements and innovations in employing nanomaterials for gas- and humidity-sensing applications. We invite the submission of original research articles and comprehensive reviews. The scope of this Special Issue includes, but is not limited to, the following areas:

  • The synthesis and characterization of nanomaterials with outstanding gas- and humidity-sensing properties.
  • The development of distinctive sensor structures utilizing nanomaterials, including micro/nanostructures, heterostructures, doping, nanocomposites, and more, with exceptional gas- and humidity-sensing capabilities.
  • The exploration of new sensing mechanisms and functionalities for gas- and humidity-sensing devices based on nanomaterials.

Dr. Yang Li
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 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-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 2400 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
  • humidity sensors
  • nanomaterials
  • nanocomposites
  • low-dimensional nanostructures
  • sensibility
  • selectivity
  • sensing mechanisms
  • flexible/wearable sensors

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Related Special Issue

Published Papers (2 papers)

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Research

14 pages, 4160 KB  
Article
Sb-Doped SnO2 Hollow Spheres for Low-Resistance and Highly Selective Xylene Sensors
by Jung-Hoo Seo, Seong-Young Yoon, Sang-Myeong Lee and Seong-Yong Jeong
Nanomaterials 2026, 16(5), 313; https://doi.org/10.3390/nano16050313 - 28 Feb 2026
Viewed by 558
Abstract
It is important to be able to detect xylene with high selectivity and low sensor resistance when monitoring indoor and outdoor air quality. In this study, we report the development of Sb-doped SnO2 hollow spheres synthesized via ultrasonic spray pyrolysis for high-performance [...] Read more.
It is important to be able to detect xylene with high selectivity and low sensor resistance when monitoring indoor and outdoor air quality. In this study, we report the development of Sb-doped SnO2 hollow spheres synthesized via ultrasonic spray pyrolysis for high-performance xylene detection with significantly reduced sensor resistance. The 2 mol% Sb-doped SnO2 sensor exhibited a remarkably high response (SX = 24.0) and selectivity (SX/SE = 3.4) toward 5 ppm xylene at 300 °C. Notably, the sensor resistance in air (Ra) was reduced by ~200-fold compared to that of pure SnO2, reaching a practical level of 38.5 kΩ, which enables cost-effective signal measurement. Furthermore, the 2Sb-SnO2 sensor demonstrated a low detection limit of 50 ppb and rapid response times (4–5 s). These results suggest that Sb doping is a highly effective strategy for engineering low-resistance and highly selective SnO2 gas sensors. This study could pave the way for a practical approach to designing xylene detection systems for indoor air monitoring. Full article
(This article belongs to the Special Issue Advanced Nanomaterials in Gas and Humidity Sensors: Second Edition)
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10 pages, 3162 KB  
Article
High-Sensitivity, Low Detection Limit, and Fast Ammonia Detection of Ag-NiFe2O4 Nanocomposite and DFT Study
by Xianfeng Hao, Yuehang Sun, Zongwei Liu, Gongao Jiao and Dongzhi Zhang
Nanomaterials 2025, 15(14), 1088; https://doi.org/10.3390/nano15141088 - 14 Jul 2025
Cited by 1 | Viewed by 832
Abstract
Ammonia (NH3) is one of the characteristic gases used to detect food spoilage. In this study, the 10 wt% Ag-NiFe2O4 nanocomposite was synthesized via the hydrothermal method. Characterization results from SEM, XRD, and XPS analyzed the microstructure, elemental [...] Read more.
Ammonia (NH3) is one of the characteristic gases used to detect food spoilage. In this study, the 10 wt% Ag-NiFe2O4 nanocomposite was synthesized via the hydrothermal method. Characterization results from SEM, XRD, and XPS analyzed the microstructure, elemental composition, and crystal lattice features of the composite, confirming its successful fabrication. Under the optimal working temperature of 280 °C, the composite exhibited excellent gas-sensing properties towards NH3. The 10 wt% Ag-NiFe2O4 sensor demonstrates rapid response and recovery, as well as high sensitivity, towards 30 ppm NH3, with response and recovery times of merely 3 s and 9 s, respectively, and a response value of 4.59. The detection limit is as low as 0.1 ppm, meeting the standards for food safety detection. Additionally, the sensor exhibits good short-term repeatability and long-term stability. Additionally, density functional theory (DFT) simulations were conducted to investigate the gas-sensing advantages of the Ag-NiFe2O4 composite by analyzing the electron density and density of states, thereby providing theoretical guidance for experimental testing. This study facilitates the rapid detection of food spoilage and promotes the development of portable food safety detection devices. Full article
(This article belongs to the Special Issue Advanced Nanomaterials in Gas and Humidity Sensors: Second Edition)
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