溶液浓度对快速燃烧法制备的磁性 NiFe₂O₄ 纳米材料的影响。

Effects of Solution Concentration on Magnetic NiFe₂O₄ Nanomaterials Prepared via the Rapid Combustion Process.

机构信息

School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China.

出版信息

J Nanosci Nanotechnol. 2019 Apr 1;19(4):2449-2452. doi: 10.1166/jnn.2019.16345.

DOI:10.1166/jnn.2019.16345

Abstract

A rapid combustion process for the preparation of magnetic NiFe₂O₄ nanomaterials was introduced. The experimental results showed that the solution concentration of ferric nitrate was a key factor to control the structure and the properties of magnetic NiFe₂O₄ nanomaterials: the magnetic NiFe₂O₄ nanorods with the diameter of about 15 nm, the length of approximately 100 nm and the saturation magnetization of 18.4-25.3 emu/g could be formed when the solution concentration of ferric nitrate was equal or greater than 1.68 mol/L; the magnetic NiFe₂O₄ nanoparticles with the average particle sizes of 20-32 nm and the saturation magnetization of 10.0-31.8 emu/g could be formed when the solution concentration of ferric nitrate was lower than 1.12 mol/L.

摘要

一种快速燃烧法用于制备磁性 NiFe₂O₄ 纳米材料。实验结果表明，硝酸铁溶液浓度是控制磁性 NiFe₂O₄ 纳米材料结构和性能的关键因素：当硝酸铁溶液浓度等于或大于 1.68 mol/L 时，可形成直径约为 15nm、长度约为 100nm、饱和磁化强度为 18.4-25.3 emu/g 的磁性 NiFe₂O₄ 纳米棒；当硝酸铁溶液浓度低于 1.12 mol/L 时，可形成平均粒径为 20-32nm、饱和磁化强度为 10.0-31.8 emu/g 的磁性 NiFe₂O₄ 纳米颗粒。