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以分析纯硝酸铋、硝酸镧、钛酸四丁酯为原料,采用水热法制备了Bi3.25La0.75Ti3O12(BLT)纳米材料。用XRD和SEM对样品的物相和形貌进行了表征。讨论了矿化剂(NaOH)浓度和水热反应时间对BLT物相的影响。表明合成产物为正交相钙钛矿结构Bi3.25La0.75Ti3O12纳米片,厚度约10 nm,平均边缘尺寸约100 nm。当反应温度为200℃时,反应时间在12 h到48 h,矿化剂浓度在1 mol/L到2 mol/L范围内能有效合成Bi3.25La0.75Ti3O12。
Based on the analysis of pure bismuth nitrate, lanthanum nitrate and tetrabutyl titanate, Bi3.25La0.75Ti3O12 (BLT) nanomaterials were prepared by hydrothermal method. The phase and morphology of the samples were characterized by XRD and SEM. The effects of mineralizer (NaOH) concentration and hydrothermal reaction time on the phase of BLT were discussed. The results show that the synthesized product is Bi3.25La0.75Ti3O12 nanosheets with the orthorhombic perovskite structure with a thickness of about 10 nm and an average edge size of about 100 nm. When the reaction temperature is 200 ℃, the reaction time is 12 h to 48 h, and the concentration of mineralizer is in the range of 1 mol / L to 2 mol / L, Bi3.25La0.75Ti3O12 can be effectively synthesized.