Synthesis and Structural Investigations of Ag-Added BaTiO3-CuO Mixed Oxide forCO2Gas Sensing

[摘要] Compositions having the general formula BaTiO3-CuO+x wt% Ag, wherex=0,1,1.5, and 2 have been prepared by solid state ceramic processing and sintered at 500 and700∘Cfor 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 BaTiO3and CuO during sintering process. The sensitivity of the prepared sensors to CO2gas increases with increasing sintering temperature and Ag content. The correlation between Ag content at different sintering temperature and structure characterization is discussed.

[学科分类] 工业化学