W7.1.2 - WO3/ SnS2 Hybrid Material for ppb-level NO2 Detection
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Lectures
- Chapter
- W7.1 - Gas Sensors 5
- Author(s)
- A. Fdhila, F. E. Annanouch, E. Llobet - University Rovira i Virgili, Tarragona (Spain), A. Fdhila, Z. Haddi - NVISION Systems and Technologies, Barcelona (Spain)
- Pages
- 166 - 167
- DOI
- 10.5162/EUROSENSORS2025/W7.1.2
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
Heterostructures exhibit superior performance, due to strong interfacial interactions, compared to their single-component structures. Herein, we demonstrate the effectiveness of a hybrid structure of tungsten trioxide (WO₃) nanoneedles loaded tin disulfide (SnS₂) nanosheets, for NO₂ detection at law tempera-ture. The co-existence of both materials is confirmed by FESEM and EDX. Furthermore, the impact of SnS₂ material on the WO₃ gas-sensing performance was demonstrated by the sensor’s response to 800 ppb of NO₂ at law temperature, where the response of WO₃/SnS₂ was amelioration by 5 folders com-pared to bare WO₃. Notably, the WO₃/SnS₂ heterostructure exhibited high sensitivity toward NO₂ at the ppb level, operating efficiently at room temperature.