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用钛酸丁酯和NiCl2制备凝胶,以十二烷基硫酸钠(SDS)/正丁醇/正庚烷/水组成的四元微乳液体系对凝胶进行化学剪裁并用KBH4还原,然后在500℃下煅烧30min,得到了直径为40～100nm,长度为150～700nm 的纳米棒状NiTiO3。并用TEM和XRD对产物的物相和结构进行表征。XRD结果表明,NiTiO3晶体呈纳米棒状,属于钛铁矿结构的三方晶系。TEM分析表明,在500℃煅烧,随着煅烧时间的延长,制备的颗粒从球形变为棒状,最后变为四方粒状、短柱状晶体。NiTiO3的粒径和形貌与煅烧温度和煅烧时间有关。
The gels were prepared with butyl titanate and NiCl2. The gels were chemically tailored with a quaternary microemulsion system consisting of sodium dodecyl sulfate (SDS) / n-butanol / n-heptane / water and reduced with KBH4. Calcined at 500 ℃ for 30min, nanorods NiTiO3 with diameter of 40 ~ 100nm and length of 150 ~ 700nm were obtained. The phase and structure of the product were characterized by TEM and XRD. XRD results show that the NiTiO3 crystal is in the form of nanorods and belongs to the tripartite crystal system of ilmenite. TEM analysis showed that calcined at 500 ℃, with the calcination time, the prepared particles from spherical to rod-shaped, and finally into tetragonal granular short columnar crystals. NiTiO3 particle size and morphology and calcination temperature and calcination time.