通过水解Zn/Fe3O4纳米粒子制备ZnFe2O4纳米结构,采用XRD和TEM检测产品的成分和形貌变化,验证反应过程方程的正确性。结果表明:当反应温度为260℃时,产品中含有ZnO纳米棒,随着反应温度升至300℃,ZnO纳米棒逐渐消失,得到纯度较高的ZnFe2O4纳米颗粒,粒度分布在20~30nm范围内。产品的Mssbauer谱分析,显示样品为磁分裂六线谱,晶体结构为正、反尖晶石混合结构,为磁有序结构,呈反铁磁性。
ZnFe2O4 nano-particles were manufactured by hydrolyzing Zn/Fe3O4 nano-particles,and the ingredient and morphology of the product were tested by XRD and TEM in order to examine and verify the water splitting process equations to be true.The results indicated that the product included ZnO nano-rods at 260℃.The ZnO nano-rods disappeared gradually when the reaction temperature rose to 300℃,and then relatively pure ZnFe2O4 nano-particles were gained.Mssbauer spectrum of the product presented a well defined sextet spectrum,and its crystal structure was a mixed spinel structure.The product took on antiferromagnetism with a magnetic nonrandom structure.