物理化学学报 >> 2012, Vol. 28 >> Issue (05): 1265-1268.doi: 10.3866/PKU.WHXB201202291

材料物理化学 上一篇    下一篇

静电纺丝法制备铁酸锌中空纤维及其磁学性能

朱福良1, 陈元锋1,2, 程永亮2, 朱玉庆1, 阎兴斌2   

  1. 1. 兰州理工大学材料科学与工程学院, 兰州 730050;
    2. 中国科学院兰州化学物理研究所, 固体润滑国家重点实验室, 兰州 730000
  • 收稿日期:2011-11-10 修回日期:2012-02-20 发布日期:2012-04-26
  • 通讯作者: 朱福良 E-mail:chzfl@lut.cn
  • 基金资助:

    甘肃省自然科学基金(3ZS042-B25-029)和国家自然科学基金(51005225)资助项目

Fabrication and Magnetic Properties of Electrospun Zinc Ferrite Hollow Fibers

ZHU Fu-Liang1, CHEN Yuan-Feng1,2, CHENG Yong-Liang2, ZHU Yu-Qing1, YAN Xing-Bin2   

  1. 1. School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, P. R. China;
    2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
  • Received:2011-11-10 Revised:2012-02-20 Published:2012-04-26
  • Contact: ZHU Fu-Liang E-mail:chzfl@lut.cn
  • Supported by:

    The project was supported by the Natural Science Foundation of Gansu Province, China (3ZS042-B25-029) and National Natural Science Foundation of China (51005225).

摘要: 以锌盐、铁盐和聚乙烯吡咯烷酮(PVP)为原料, 通过静电纺丝法先制备PVP/硝酸盐复合纤维, 这些复合纤维以5 °C·min-1的升温速率加热到500 °C并保温3 h, 最终得到铁酸锌(ZnFe2O4)中空纤维. 通过X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)以及振动样品磁强计(VSM)等分析手段对中空纤维的晶体结构、形貌和磁学性能进行了研究. 结果显示, ZnFe2O4中空纤维属于尖晶石结构, 高温处理后仍能保持一维结构, 纤维直径在200-400 nm之间, 纤维壁由大小为25 nm的颗粒堆积而成. 室温磁化结果显示制备的ZnFe2O4中空纤维具有超顺磁性, 在10 kOe的磁化强度为2.03 emu·g-1.

关键词: 纤维技术, ZnFe2O4, 中空纤维, 纳米颗粒, 磁学性能

Abstract: Zinc ferrite (ZnFe2O4) hollow fibers have been fabricated by annealing electrospun polyvinylpyrrolidone (PVP)/nitrate salt composite nanofibers at 500 °C for 3 h with a heating rate of 5 °C· min-1. The composite fibers were initially prepared by electrospinning Zn, Fe salts, and PVP from solution. The structure, morphology, and magnetic properties were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and vibrating sample magnetometry (VSM). The XRD results indicate a spinel phase structure, while SEM and TEM reveal hollow fibers (200-400 nm in diameter) with walls consisting of packed 25 nm nanoparticles. Room temperature VSM of the ZnFe2O4 hollow fibers reveal a superparamagnetic behavior and a magnetization value of 2.03 emu·g-1 at 10 kOe.

Key words: Fiber technology, ZnFe2O4, Hollow fiber, Nanoparticle, Magnetic property

MSC2000: 

  • O649