OT5.266 - Electrochemically Exfoliated 2D MoS2 for ppb-level NO2 Sensing
- Event
- EUROSENSORS XXXVI
2024-09-01 - 2024-09-04
Debrecen (Hungary) - Band
- Lectures
- Chapter
- OT5 - Chemical Sensors
- Author(s)
- S. Biswas, J. D. Holmes, K. Urs - University College Cork, Cork (Ireland), T. Carey, S. Liu, K. Synnatschke, J. N. Coleman - Trinity College Dublin, Dublin (Ireland)
- Pages
- 145 - 146
- DOI
- 10.5162/EUROSENSORSXXXVI/OT5.266
- ISBN
- 978-3-910600-03-4
- Price
- free
Abstract
We demonstrate proof-of-concept Molybdenum sulphide (MoS2) sensors for environmental monitoring of ultra-low concentration of NO2. Robust detection in a wide range of NO2 concentrations, 100 ppb-50 ppm, was achieved, highlighting the great potential for electrochemically exfoliated MoS2-based NO2 sensors. The measurements were performed in a complex environment, combining NO2/synthetic air, traces of other pollutant gases, and in room temperature to achieve fully deployable sensor for the environmental conditions. It is shown; with the aid of density functional theory (DFT) calculations; that the performance of the electrochemically exfoliated MoS2 sensor can outperform sensors based on mechanically exfoliated MoS2 owing to their large surface defects and vacancies.