摘要
以无机镍盐和钛酸四丁酯为起始原料,乙醇为溶剂,柠檬酸为螯合剂,乙酰丙酮为络合剂,采用溶胶-凝胶法在不同的pH下制备了钛酸镍纳米晶。采用X射线衍射（XRD）、综合热分析仪（TG-DSC）以及透射电子显微镜（TEM）对制备的纳米晶进行了测试和表征。结果表明：NiTiO3的合成温度为550~700℃;在酸性条件下更易获得单一物相的钛酸镍纳米晶;并且随着pH的增加,粉体的纯度降低,平均粒径有增大的趋势;当pH为0.5时,粉体为单一物相的钛酸镍纳米晶,且晶粒形貌为六方形。
Nickel titanate （ NiTiO3 ） nanocrystallites were prepared via sol - gel method under different pH using inorganic nickel salt and tetrabutyl titanate as raw materials, absolute ethanol as solvent, citric acid as chelating agent, and aeetylaeetone as eomplexing agent. Prepared nanocrystallites were tested and characterized by X - ray diffraction （XRD） , DSC/TG, and transmission electron microscopy （ TEM ）. Results showed that the synthesis temperature of NiTiO3 nanocrys- tallites was between 550 ℃ and 700 ℃ ;it＇s easier to obtain monophase NiTiO3 nanoerystallites in acidic condition;with the increase of pH,the powders had lower purity and the average particle size had increasing trend; powders were monophase NiTiO3 nanoerystallites with a hexagon morphorlogy when pH = 0.5.
出处
《无机盐工业》
CAS
北大核心
2011年第2期17-19,共3页
Inorganic Chemicals Industry
基金
教育部新世纪优秀人才支持计划基金项目(NCET-06-0893)
陕西科技大学研究生创新基金项目(TD09-05)
