钛(IV)固溶氧化镁纳米粉体的制备与表征

Preparation and Characterization of Titanium (IV)-substituted MgO Nano-powders

采用液相共沉淀方法,以Mg（NO3）2.6H2O和Ti（OC4H9）4为起始原料,NH3.H2O为沉淀剂,PEG为分散剂,冰乙酸为修饰剂,制备了钛（IV）固溶氧化镁纳米粉体。利用XRD,XPS和TEM等分析手段对粉体的物相组成、结构和形貌等进行了表征。结果表明Ti4＋固溶到MgO的晶格中,物相只有立方晶系的方镁石结构MgO相组成,无其它相存在。所制得的粉体颗粒尺寸小（约40~50 nm）、粒度分布均匀,具有良好的分散性能。

Titanium （IV） -substituted MgO nano-powders were prepared from Mg （ NO3 ） 2 · 6H2O, Ti （OC4H9） 4 and NH3· H2O by a co-precipitation method using acetic acid as a modifier in the presence of the surfactant polyethylene glycol （PEG）. The obtained products were characterized by XRD, XPS and TEM techniques. The results show that Ti4＋ ions have been successfully incorporated into the crystal lattice of MgO with periclase structure. The particles of the products have small particle size （ about 40-50 nm）, narrow size distribution and good dispersion of particles.