W7.1.4 - Ultrafast Recovery and Humidity Effect in a MoS2-ZnO functionalized CNTs Array driven as an e-nose
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Lectures
- Chapter
- W7.1 - Gas Sensors 5
- Author(s)
- M. Galvani, L. Sangaletti - Surface Science and Spectroscopy Lab at I-Lamp, Department of Mathematics and Physics, Università Cattolica del Sacro Cuore, Brescia (Italy)
- Pages
- 170 - 171
- DOI
- 10.5162/EUROSENSORS2025/W7.1.4
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
Gas sensors are essential in various fields, and high chemical selectivity and fast response/recovery times are usually crucially important. Chemiresistors based on nanomaterials are still a central sensors category due to ease of fabrication, which allows for an easy prototyping of novel architecture, especially when sensor arrays are operated as e-noses. Here, we present an array of ultrafast, highly selective gas sensors using CNTs layers decorated with ZnO and MoS₂. The sensors exhibit strong NH₃ selec-tivity, with recovery times below 10 seconds. Lastly, the array can be operated as an electronic nose, successfully discriminating the different target gas molecules using both scatter plots and PCA analysis.