Journal of Inorganic Materials

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Synthesis and Characterization of Tin Oxide Nanocrystals for Gas Sensor Applications

ZHANG Jian-Rong; GAO Lian   

  1. State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences; Shanghai 200050; China
  • Received:2004-03-17 Revised:2004-06-29 Published:2005-03-20 Online:2005-03-20

Abstract: SnO2 nanocrystals were synthesized by decomposing a stable tin complex for the first time. The crystallite size grew from 4.5nm at 400℃ to 14.6nm at 600℃, the cell volume expansion decreased correspondingly and the specific surface area decreased sharply. The SnO2 nanocrystals showed high sensitivities to LPG, petrol, alcohol and methanal, and the response and recovery times were much shorter than previously reported values.

Key words: nanoparticles, SnO2, gas sensor

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