T5.1.1 - Activated Carbon in Focus: Is It the Key to Better NO? Gas Sensors?
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Lectures
- Chapter
- T5.1 - Gas Sensors 3
- Author(s)
- P. Kyokunzire, J. Zaraket, V. Fierro, A. Celzard - University of Lorraine, Epinal (France)
- Pages
- 122 - 123
- DOI
- 10.5162/EUROSENSORS2025/T5.1.1
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
Gas sensors play a crucial role in detecting harmful environmental gases. This work therefore gives an insight into the sensing performance of a commercial Activated Carbon (AC) for NO₂ detection at room temperature. NO₂ sensing was assessed over a dynamic concentration range from 1 to 20 ppm and 20 to 1 ppm. The impact of increasing and decreasing NO₂ concentration, and saturation on sensor re-sponse was examined. NO₂ sensing proceeded by adsorption, facilitated by the porosity and high sur-face area of AC, and a response limit close to 65% was observed at sensor saturation.