Ionics

, Volume 14, Issue 5, pp 363–369

Gas-sensing studies on SnO2 or NASICON-type composite materials

Original Paper

Abstract

NASICON \(\left( {Na_{1 + x} Zr_2 Si_x P_{x - 3} O_{12} ;0 \leqslant x \leqslant 3} \right)\) powders were prepared by solid-state synthesis, a fraction was ion exchanged by Li or K, verified by X-ray diffraction and energy dispersive X-ray analysis, blended with tin oxide powder, transferred to thick film pastes, and dispensed on a commercial sensor substrate (Heraeus, Germany). Simultaneous gas sensitivity measurements on nine SnO2/NASICON-type (\(M_{1 + x} Zr_2 Si_x P_{x - 3} O_{12} \), x = 0, 2.2, 3, M = Li, Na, K) composites in thermocyclic sensor operation mode by exposure to different concentrations of Ethanol, Toluene, Propylene, CO, and H2 in humidified synthetic air show a strong correlation of the gas-sensing properties with the mobile ion concentration and type of the solid electrolyte additive.

Keywords

Cationic conductors Thick films Sensors 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Institute of Sensorics and Information SystemsKarlsruhe University of Applied SciencesKarlsruheGermany
  2. 2.Kurt-Schwabe InstituteUniversity of DresdenDresdenGermany
  3. 3.Dresden University of Technology, Chemistry and Food ChemistryDresdenGermany

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