抄録
BaTiO3-SiO2 aerogels were prepared by sol-gel route with supercritical drying technique, after silica wet gel was dipped into BaTiO3 solution. In order to compare with the properties of compounded aerogels, pure BaTiO3 nanoparticles were also prepared by the sol-gel method. These BaTiO3-SiO2 aerogels and BaTi0O3 nanoparticles were characterized by X-ray diffraction (XRD), Raman spectra, transmission electron microscopy (TEM) and photoluminescence (PL) spectra. The size of compounded aerogel nanoparticles distributed from 7 to 20 nm when the BaTiO3-SiO2 aerogels were heated at 800 °C. The intensity of PL was obviously increased, comparing with the one of pure BaTiO3 heated at the same temperature.
