Ce_(1-x)M_XO₂, {M=Ru, In} Solid Solutions as Novel Gas Sensors for CO Detection

Abstract

In the present work, the study of semiconducting Ce(1-x)MXO2 (M=Ru, In) solid-solutions nanostructures with application to gas sensors is addressed. Nanostructured powers were prepared by means of the sol-gel route. The electrical resistance of obtained materials under different conditions of time, concentration and temperature in CO presence was tested. These systems were characterized using x-ray diffraction, SEM microscopy and surface area measurements. The solid solutions demonstrated good sensorial response at low temperatures, as well as fast response as a function of time. Our results show that these novel materials can be potentially applied as gas sensors.

Effects of Annealing Ambient on Electrical Properties of LaBaCo₂O_5+δ Thin Films

“…Complex transition-metal oxides have attracted considerable attention by the scientific and engineering communities because of their electrical, magnetic and optical properties which can be used for the development of various new concept devices, energy harvesting, electrical and chemical sensors, etc. [1][2][3][4][5][6][7]. Recently, much attention is focused on oxygen deficient perovskite cobaltates LnBaCo 2 O 5+δ (Ln=Y and Lanthanide) due to their important and unique physical properties, such as high chemical stability, good oxygen permeability, and mixed electronic and ionic conductance at high temperature range (500 o C-700 o C), which makes it one of the best candidates for energy conversion, catalysis, sensing materials, solid oxides fuel cells etc.…”