| 有机盐制备的Fe3O4-葡聚糖纳米粒子的磁性能及表征 |
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| 引用本文： | 杨玉东,宋志伟,梁勇.有机盐制备的Fe3O4-葡聚糖纳米粒子的磁性能及表征[J].化学物理学报,2005,18(4):605-608. |
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| 作者姓名： | 杨玉东 宋志伟 梁勇 |
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| 作者单位： | 沈阳工业大学理学院，黑龙江科技学院资源与环境学院，中国科学院金属研究所 沈阳110023，中国科学院金属研究所，沈阳110016，哈尔滨150027，沈阳110016 |
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| 摘 要： | 利用葡糖酸铁(C12H22FeO14·2H2O)和柠檬酸铁(C6H5O7Fe·5H2O)参与的化学共沉积法制备出单分散核心氧化铁的平均粒径为4.1nm,葡聚糖厚度约为11nm,总体平均粒径为26nm的Fe3O4葡聚糖复合纳米粒子.研究结果表明,复合粒子Fe3O4葡聚糖具有超顺磁性.制备过程中没有N2保护,得到的Fe3O4无机粒子的晶体结构几乎没有发生变化,证明了有机盐的抗氧化性,合成的Fe3O4葡聚糖复合纳米粒子具有较好的磁性能.其在室温下(300K)的饱和磁化强度为52emu/g,低温下(5K)的饱和磁化强度为63emu/g.并利用TEM、XRD、DLS和VSM(振动样品磁强计)等手段对其粒结构、形态、粒径和磁性能进行了表征.
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| 关 键 词： | 葡聚糖-Fe3O4 单分散 有机盐 超顺磁性 |
| 收稿时间： | 2004/7/20 0:00:00 |
Characterization and Magnetic Property of Fe3O4-Dextran Nano Particles Prepared by Organic Salt |
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| Yang Yudong,Song Zhiwei and Lang Yong.Characterization and Magnetic Property of Fe3O4-Dextran Nano Particles Prepared by Organic Salt[J].Chinese Journal of Chemical Physics,2005,18(4):605-608. |
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| Authors: | Yang Yudong Song Zhiwei and Lang Yong |
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| Institution: | Yang Yudong~a,b*,Song Zhiwei~c,Lang Yong~b |
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| Abstract: | By means of chemical co-deposition method in which added Ferric citrate and Ferrous Gluconate, Fe_3O_4-Dextran composite nano-particles having average diameter 26 nm, was obtained. The particles had a core of diameter 4.1 nm Fe_3O_4 with a shell of thickness 11 nm Dextran. In the experiment the critical structure of Fe_3O_4 inorganic particles abstained without N_2 protection had no changes. From the result, it can be proven that organic salt has anti-oxidation properties and the composite particles have superparamagnetic whose good magnetization is 52 emu/g at 300 K, and 63 emu/g at 5 K. The structure, pattern diameter and magnetic properties of the Fe_3O_4-Dextran composite particles were examined by means of TEM, XRD, DLS and VSM. |
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| Keywords: | Dextran-Fe_3O_4 Monodisperse Organic salt Superparamagnetic |
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