Mo-CHS-11 - Harnessing Multi-phase Interactions in Sn/SnO/SnO2 Tri-phase Material for Gas Sensing

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Chemical Sensors

Author(s)

G. Kim, A. Güntner - ETH Zürich,Zürich (Switzerland)

Pages

410 - 411

DOI

10.5162/eurosensors2026/Mo-CHS-11

ISBN

978-3-910600-12-6

Price

free

Abstract

Tin oxide is a redox-active material, yet controlled tuning of its surface oxidation states remains elusive due to non-selective reduction pathways. Here, we report a urea-assisted thermal treatment that enables surface-selective transformation of SnO 2 , leading to Sn/SnO/SnO 2 multiphase nanocomposites with controlled phase coexistence. This platform allows direct interrogation of multiphase interfaces, revealing distinct roles of metallic Sn and SnO in signal transduction and surface reaction kinetics in gas sensing.