物理化学学报 >> 2010, Vol. 26 >> Issue (03): 695-700.doi: 10.3866/PKU.WHXB20100312

光化学与光谱 上一篇    下一篇

在卵磷脂体系中合成EuF3纳米线

洪广言, 张吉林, 高倩   

  1. 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:2009-07-31 修回日期:2009-11-16 发布日期:2010-03-03
  • 通讯作者: 洪广言 E-mail:gyhong@ciac.jl.cn

Synthesis of EuF3 Nanowires in Soybean Lecithin

HONG Guang-Yan, ZHANG Ji-Lin, GAO Qian   

  1. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
  • Received:2009-07-31 Revised:2009-11-16 Published:2010-03-03
  • Contact: HONG Guang-Yan E-mail:gyhong@ciac.jl.cn

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摘要：

利用大豆卵磷脂在水中自发形成的囊泡作模板, 先制备出含有Eu3+的卵磷脂乳液, Eu3+与卵磷脂亲水头部的磷氧键相结合形成Eu—O—P键, 经用NH4F沉淀后制得前驱体, 该前驱体在600 ℃灼烧, 得到EuF3纳米线, 其直径约为10-20 nm. 通过对各阶段产物的荧光光谱、傅里叶变换红外(FTIR)光谱、热重-差热分析(TG-DTA)、透射电镜(TEM)等的对比分析, 确认形成了Eu—O—P键, 所得到的纳米线是多晶相EuF3.

关键词: Eu3+离子, 大豆卵磷脂, EuF3纳米线

Abstract:

The precursor was prepared in two steps: the soybean lecithin latex containing Eu3+ ions was prepared first using a EuCl3 solution. The vesicles formed spontaneously in the soybean lecithin aqueous solution and were used as a template. The precursor was then obtained by precipitating Eu3+ ions with NH4F in the vesicle system that was formed by soybean lecithin. EuF3 nanowires with diameters of about 10-20 nm were obtained from the precursor that was annealed at 600 ℃. The formation of the EuF3 nanowires is discussed considering a comparative analysis by fluorescence spectra, Fourier transforminfrared (FTIR) spectra, thermal gravimetric analysis-differential thermal analysis (TGA-DTA), and transmission electron microscopy (TEM) of the products from each stage. Results show that the Eu—O—P bond is formed by the coordination of Eu3+ ions and the nanowires are multi-crystalline phase EuF3.

Key words: Eu3+ ion, Soybean lecithin, EuF3 nanowires