Open AccessSynthesis and Structural Investigations of Ag‐Added BaTiO3‐CuO Mixed Oxide for CO2 Gas Sensing
Author(s) -
A. M. El-Sayed,
F. M. Ismail,
S.M. Yakout
Publication year - 2011
Publication title -
international journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.309
H-Index - 25
eISSN - 1687-8078
pISSN - 1687-806X
DOI - 10.1155/2011/592075
Subject(s) - sintering , thermogravimetric analysis , materials science , scanning electron microscope , pellets , ceramic , analytical chemistry (journal) , oxide , powder diffraction , mixed oxide , infrared spectroscopy , diffraction , nuclear chemistry , chemical engineering , crystallography , metallurgy , composite material , chemistry , optics , organic chemistry , physics , engineering
Compositions having the general formula BaTiO3-CuO+ wt% Ag, where =0,1,1.5, and 2 have been prepared by solid state ceramic processing and sintered at 500 and 700∘C for 5 h. Thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), infrared absorption spectra (IR), and scanning electron microscopy (SEM) were used to characterize the obtained sensor pellets. It was found that no solid state reaction took place between BaTiO3 and CuO during sintering process. The sensitivity of the prepared sensors to CO2 gas increases with increasing sintering temperature and Ag content. The correlation between Ag content at different sintering temperature and structure characterization is discussed
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