MP43 - Sub-ppm Methane Sensing by Spark-Ablation-Synthesized SnO2 Nanoparticle-based Materials
- Event
- EUROSENSORS XXXVII
2025-09-07 - 2025-09-10
Wroclaw - Band
- Poster I
- Chapter
- Gas Sensors
- Author(s)
- D. Gounaris, S. E. Pratsinis, G. Biskos - Climate and Atmosphere Research Center, Nicosia (Cyprus), A. Baut, A. Güntner - Human-centered Sensing Laboratory, ETH Zürich, Zürich (Switzerland)
- Pages
- 289 - 290
- DOI
- 10.5162/EUROSENSORS2025/MP43
- ISBN
- 978-3-910600-07-2
- Price
- free
Abstract
We demonstrate a simple and scalable method to synthesize Sn nanoparticles via spark ablation using nitrogen at atmospheric pressure. Post-annealing, the particles convert to SnO₂, as confirmed by X-ray diffraction and Transmission Electron Microscopy (TEM), and processed into gas sensing materials for methane detection. The sensors respond to concentrations as low as 0.2 ppm with high sensitivity and repeatability. Performance remained stable over repeated cycles. Our results demonstrate that spark ablation provides a promising route for fabricating reliable low-level methane sensors.