高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2112.

• 研究论文 • 上一篇    下一篇

静电纺丝法制备LaFeO3微纳米纤维

季宏伟1, 周德凤1, 周险峰2, 刘海涛1, 孟健2   

  1. 1. 长春工业大学化学与生命科学学院, 长春 130012;
    2. 中国科学院长春应用化学研究所稀土资源利用国家重点实验室, 长春 130022
  • 收稿日期:2009-06-04 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 周德凤, 女, 博士, 教授, 主要从事无机固体材料研究. E-mail: defengzhou65@126.com
  • 基金资助:

    国家自然科学基金(批准号: 20871023, 20671088)和吉林省科技发展计划(批准号: 20070510)资助.

Fabrication of LaFeO3 Micro-nanofiber by Electrospinning

JI Hong-Wei1, ZHOU De-Feng1*, ZHOU Xian-Feng2, LIU Hai-Tao1, MENG Jian2   

  1. 1. School of Biological Engineering, Changchun University of Technology, Changchun 130012, China;
    2. State Key Laboratory of Rare Earth Resource Utilization, Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2009-06-04 Online:2009-11-10 Published:2009-11-10
  • Contact: ZHOU De-Feng E-mail: defengzhou65@126.com
  • Supported by:

    国家自然科学基金(批准号: 20871023, 20671088)和吉林省科技发展计划(批准号: 20070510)资助.

摘要:

采用静电纺丝技术并结合溶胶-凝胶方法制备了LaFeO3微纳米纤维. 用差热-热重分析(TG-DTA)、X射线衍射(XRD)、红外光谱(FTIR)、X射线光电子能谱和场发射扫描电镜(FE-SEM)对样品进行了表征. 实验结果表明, 390 ℃时钙钛矿结构的LaFeO3晶体开始形成, 同时伴有少量微弱的La2O2CO3和Fe2O3杂相存在, 600 ℃煅烧获得正交钙钛矿结构的LaFeO3微纳米纤维, 其纤维直径分布在300~600 nm之间, 其平均直径约为420 nm, 平均晶粒尺寸为28 nm.

关键词: 静电纺丝; 微纳米纤维; LaFeO3

Abstract:

Perovskite structure LaFeO3 Micro-nanofiber was successfully fabricated via electrospinning combined with sol-gel technology. The samples of LaFeO3 micro-nanofiber were characterized by thermogravimetry-differential thermal analysis(TG-DTA), X-ray diffraction(XRD), Fourier transform infrared(FTIR), X-ray photoelectron spectroscopy(XPS) and field emission scanning electron microscopy(FE-SEM) technology, respectively. The results show that the perovskite structure LaFeO3 crystals begin to form at 390 ℃, accompanied by a small amount of weak La2O2CO3 and Fe2O3 hybrid, the orthogonal perovskite structure LaFeO3 micro-nanofiber is obtained by calcining at 600 ℃, the distribution of fiber diameter is between 300 and 600 nm, the average fiber diameter is about 420 nm with an average grain size of 28 nm.

Key words: Electrospinning technology; Micro-nanofiber; LaFeO3

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