Premium
A Novel Mechanism for the Synthesis of Tin /Tin Oxide Nanoparticles of Low Size Dispersion and of Nanostructured SnO 2 for the Sensitive Layers of Gas Sensors
Author(s) -
Nayral Céline,
OuldEly Teyeb,
Maisonnat André,
Chaudret Bruno,
Fau Pierre,
Lescouzères Lionel,
PeyreLavigne André
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199901)11:1<61::aid-adma61>3.0.co;2-u
Subject(s) - materials science , oxidizing agent , tin oxide , nanoparticle , tin , nanotechnology , oxide , tin dioxide , nanostructure , dispersion (optics) , thermal decomposition , layer (electronics) , chemical engineering , metallurgy , organic chemistry , physics , engineering , optics , chemistry
The resistance of a metal oxide gas sensor varies when the sensor is exposed to oxidizing or reducing gases, thus giving rise to a measurable signal. The most important sensor type with respect to practical application uses SnO 2 as the sensitive layer material. In this paper, a new procedure for preparing nanoparticles of SnO 2 suitable for gas sensing applications—combining thermolysis of an organometallic precursor with a hydration—is described. Such nanostructures are desirable since the size reduction of individual grains is expected to increase the sensitivity.