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以金属阳极溶解法制得MgTiO3前驱体MgTi(OCH2CH3)(6-y)(acac)y[acac为乙酰丙酮基];讨论了影响电合成镁、钛醇盐配合物的主要因素。在pH=8.5的条件下,将含有前驱体的电解液直接水解形成凝胶,凝胶经洗涤、干燥后,在500℃下煅烧2h,制得纳米Mg-TiO3粉体。采用红外(IR)、热重-差热分析(TG-DTA)、X-射线衍射(XRD)、电子透射技术(TEM)等对前驱体和纳米Mg-TiO3进行了表征。实验表明,在使用导电盐Bu4NBr浓度0.04mol/L,控制电解液温度35～40℃之间的条件下,制得的纳米Mg-TiO3粉体纯度高,平均粒径在20～30nm之间。
MgTiO3 precursors MgTi (OCH2CH3) (6-y) (acac) y [acac acetylacetonate] were prepared by metal anodic dissolution. The main factors affecting the electrosynthesis of magnesium and titanium alkoxide complexes were discussed. Under the condition of pH = 8.5, the electrolyte containing the precursor is directly hydrolyzed to form a gel, the gel is washed, dried and then calcined at 500 ° C. for 2 hours to obtain nano-Mg-TiO3 powder. The precursors and nano-Mg-TiO3 were characterized by IR, TG-DTA, XRD and TEM. Experiments show that under the condition of using the conductive salt Bu4NBr concentration 0.04mol / L, the control electrolyte temperature between 35 ~ 40 ℃, the prepared nano-Mg-TiO3 powder has high purity and the average particle size is between 20-30nm.