高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

Y2O3和Nd2O3介孔薄膜的制备与表征

王彤文1, 刘玲1, 刘伟平2, 马子鹤1, 杨智1, 段爱红1, 阮琼1   

    1. 云南师范大学化学化工学院, 昆明 650092;
    2. 昆明贵金属研究所, 昆明 650221
  • 收稿日期:2005-12-31 修回日期:1900-01-01 出版日期:2006-11-10 发布日期:2006-11-10
  • 通讯作者: 王彤文

Preparation and Characterization of Mesoporous Y2O3 and Nd2O3 Films

WANG Tong-Wen1, LIU Ling1, LIU Wei-Ping2, MA Zi-He1, Yang Zhi1, DUAN Ai-Hong1, RUAN Qiong1
   

    1. College of Chemistry and Engineering, Yunnan Normal University, Kunming 650092, China;
    2. Kunming Institute of Precious Metals, Kunming 650221, China
  • Received:2005-12-31 Revised:1900-01-01 Online:2006-11-10 Published:2006-11-10
  • Contact: WANG Tong-Wen

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摘要： 以聚乙烯合丁烯-嵌-聚氧乙烯嵌段共聚物(PHB-PEO)作模板, 采用蒸发诱导自组装方法, 分别制备了Y2O3和Nd2O3介孔薄膜. 用小角、广角X射线衍射和透射电子显微镜对薄膜样品在不同的热处理阶段进行了表征. 结果表明, 所制备的Y2O3和Nd2O3薄膜样品呈现一种大孔径(平均孔径分别约为11.5和12.5 nm)、有序的立方扭曲球形孔排列、稳定于450 ℃并具有部分晶态孔壁结构的介孔薄膜材料.

关键词: Y2O3, Nd2O3, 介孔薄膜, 嵌段共聚物模板, 蒸发诱导自组装

Abstract: With poly(ethylene-co-butylene)-block-poly(ethylene oxide) block copolymer(PHB-PEO) as the template, mesostructured Y2O3 and Nd2O3 thin films were successfully synthesized through the well-documented evaporation-induced self-assembly approach. The obtained samples calcined at different temperatures were characterized in detail by using small- and wide-angle X-ray diffraction and transmission electron microscopy(TEM). The results show that our presented Y2O3 and Nd2O3 thin filmspossessed an Im3m body-centered-cubic(BCC) array of distorted spherical pores with an average p
ore diameter of about 11.5 and 12.5 nm, respectively. Furthermore, the partial crystalline pore walls can stabilize at 450 ℃. The investigation also indicated that a rapid self-assembly process is necessary to generate the mesoporous Y2O3 and Nd2O3 thin films. It can be achieved by the utilization of PHB-PEO template and the fast dip-coating process of evaporation-induced self-assembly.

Key words: Y2O3, Nd2O3, Mesoporous thin films, Block copolymer template, Evaporation-induced self-assembly

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