作　　者： ; ; ; ; ; ;

机构地区： 江西师范大学化学化工学院

出　　处： 《江西师范大学学报（自然科学版）》 2010年第1期68-71,共4页

摘　　要： 在无模板剂和无表面活性剂的条件下,以K3Fe(CN)6和NaOH为原料,用水热法在180℃下反应2 h制备了具有混合形貌的铁的化合物.通过简易的形貌选择过程得到花状氧化铁的前驱体.将所得的前驱体在700℃下煅烧4 h后制备出多孔花状纳米氧化铁.用XRD、SEM、HRTEM等对合成的产物进行表征,对多孔花状纳米氧化铁的形成机理进行了探讨.实验结果表明,多孔花状氧化铁是由厚度大约为20 nm的多孔纳米花瓣组成,花的直径约为8μm. Iron compounds with mixed morphologies were prepared employing the reaction between K3Fe（ CN）6 and NaOH via a template-free and surfactant-free hydrothennal method after reaction at 180 ℃ for 2 h. After a facile morphology-selection process, flowerlike hematite precursors were obtained. Porous hematite nanofloweres were obtained after thermal treatment of the hematite precursors at 700 ℃ for 4 h. The as-obtained products were characterized by XRD, SEM and HRTEM. The formation mechanism for the porous hematite nanoflowers was briefly suggested. Results demonstrate that the as-prepared porous nanoflowers are with diameters about 8 μm and are constructed by porous nanopetals with thickness of about 20 nm.

关 键 词： 氧化铁 水热合成 纳米材料

领　　域： [理学] [理学]