Sol–gel preparation and structural characterization of Ba2TiSi2O8 powder |
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| Authors: | Ionela Carazeanu Popovici Gabriel Prodan |
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| Institution: | 1. Chemistry Department, Ovidius University, 124 Mamaia, 900527, Constantza, Romania
2. Physics Department, Ovidius University, 124 Mamaia, 900527, Constantza, Romania
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| Abstract: | Fresnoite (Ba2TiSi2O8, BTS) nano-particles were successfully synthesized at a low temperature of 900?°C by a modified Pechini sol?Cgel process with starting materials of Ba(NO3)2, Si(OC2H5)4 and Ti(OC3H7)4. The structural characterization of the precursors and derived synthesized oxide powders is done by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermal analysis (TG-DTG) and electron microscopy (SEM, EDX and TEM) studies. The effect of heat-treating temperature on the crystallinity of the fresnoite was investigated. Combined the XRD data and the strong FTIR peaks assigned to Ti?CO and Si?CO vibration, indicate the formation of fresnoite phase at a temperature of 900?°C. Also the nano-crystals size distribution was studied and the main diameter of nanoparticles was about 47?nm. |
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