By using strontium acetate and titanium n--butoxide [Ti(OBun)4] as starting agents, perovskite -- type double oxide SrTiO3 can be obtained by the sol--gel method. By means of infra-red spectra (IR), X--ray diffraction...By using strontium acetate and titanium n--butoxide [Ti(OBun)4] as starting agents, perovskite -- type double oxide SrTiO3 can be obtained by the sol--gel method. By means of infra-red spectra (IR), X--ray diffraction (XRD), differential thermal analysis (DTG), thermal gravimetry (TG) and scanning electron microscopy (SEM), basical factors, affecting the formation .of SrTiO3,have been discussed. IR results show that the acetic acid as a chelating ligand plays an important role in modifying the whole hydrolysis --condensation process. The addition of glycerol leads to obtaining clear and unique gels. The structure of SrTiO3 calcined at 800℃ is cubic.展开更多
文摘By using strontium acetate and titanium n--butoxide [Ti(OBun)4] as starting agents, perovskite -- type double oxide SrTiO3 can be obtained by the sol--gel method. By means of infra-red spectra (IR), X--ray diffraction (XRD), differential thermal analysis (DTG), thermal gravimetry (TG) and scanning electron microscopy (SEM), basical factors, affecting the formation .of SrTiO3,have been discussed. IR results show that the acetic acid as a chelating ligand plays an important role in modifying the whole hydrolysis --condensation process. The addition of glycerol leads to obtaining clear and unique gels. The structure of SrTiO3 calcined at 800℃ is cubic.
