HYDROTHERMAL SYNTHESIS OF NANO-METER MICROPOROUS ZINC FERRITE

Nano-meter microporous zinc ferrite was prepared by a hydrothermal method, using triethylamine as a template. Adsorption curves showed that the product had a microporous structure. The effects of precursor pH, reaction temperature and reaction time on the preparation were studied, yielding optimal conditions: pH=11, 448 K, 360 min. The morphology of zinc ferrite as observed by TEM, showed that zinc ferrite was well-crystallized and well-dispersed with little conglomeration.

水热模板法制备的纳米微孔镍锌铁氧体

以镍、锌、铁的硫酸盐为原料、三乙胺和聚乙二醇作为模板剂,采用水热模板法制备了纳米镍锌铁氧体粉体,并通过红外光谱分析(FT-IR)、X射线衍射(XRD)、比表面积检测(BET)、扫描电镜(SEM)、密度测量等手段对样品进行表征。结果表明,水热模板法制备的纳米微孔镍锌铁氧体为尖晶石型;模板剂的引入使产物形成了孔结构,平均孔径为14nm左右,且密度降低;SEM显示产物颗粒较小,粒度分布较均匀,分散性好。