Abstract

FRAIGI, L.B; WEINSTOCK, A  and  MOINA, C.A. SnO₂ thick film gas sensors additivated with noble metal nanoparticles obtained by chemical synthesis. Rev. mex. fis. [online]. 2006, vol.52, suppl.2, pp.14-16. ISSN 0035-001X.

In this work, Pt nanoparticles obtained by different synthetic routes were incorporated into nanostructured SnO₂ powders by contact transference. The presence of the nanoparticles was confirmed by XRD and TEM. When used as sensitive material in the fabrication of gas sensors, the SnO₂/Pt nanoparticle composites obtained showed a high sensitivity towards the detection of reductive gases such as CO.

Keywords : Thick film gas sensors; Pt nanoparticles; CO detection.