EDTA辅助水热法制备特殊形貌的微/纳米钼酸镍

钼酸镍是重要的催化剂，其物相结构和形貌对催化性能影响较大。采用水热合成技术，借助络合助剂乙二胺四乙酸钠盐的形貌调控作用，在不同pH条件下制备了不同形貌的微/纳米钼酸镍。用X射线粉末衍射、透射电子显微镜和扫描电子显微镜对所得产物的物相结构、形貌和尺寸进行了表征分析，并对络合剂调控形貌的微观机理进行了初步探讨。结果表明，络合剂对钼酸镍微/纳米棒的形成起着关键作用。 

EDTA assisted hydrothermal synthesis of micro / nano nickel molybdate with special morphology

Nickel molybdate is an important catalyst，whose catalytic activity is subject to its phase structure and morphology. Micro/nano nickel molybdate with different morphologies had been successfully prepared via hydrothermal technique using ethylenediaminetetraacetic acid disodium salt dihydrate as shape-control agent under different pH.X-ray powder diffractometry， transmission electron microscope，and scanning electron microscope were employed for the characterization and analysis of the phase，morphology，and size of the resulting products.Results indicated that the complexation additive played a key role for the formation of micro/nano nickel molybdate rods.Corresponding micro mechanism of complexation additive controlling morphology was also preliminarily discussed.