[20p-P03-1~11] 9.2 Nanoparticles, Nanowires and Nanosheets

[20p-P03-10] Morphology Effect of SnO₂ Particles on Gas Sensing Properties and Surface Reactivity

〇Koichi Suematsu¹, Tobias Koeninger², Kengo Shimanoe¹, Udo Weimar², Nicolae Barsan² (1.Kyushu Univ., 2.Tuebingen Univ.)

Keywords:

gas sensor,surface reaction,exposed face

Semiconductor gas sensors using SnO₂ can detect combustible gases based on the reaction of the gases on the surface of the particles. The morphology of the particles influences the surface reaction, which affects the sensor performance. Thus, we synthesized SnO₂ nanoparticles and nanorods, and we evaluated the surface reaction of VOC gases and electrical properties. Accordingly, we clarify the effect of the particle’s morphology based on the exposed face of metal oxide on the surface reaction and sensor performance.