Y_2O_3和Nd_2O_3介孔薄膜的制备与表征  

Preparation and Characterization of Mesoporous Y_2O_3 and Nd_2O_3 Films

作　　者：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] 

机构地区：[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

出　　处：《高等学校化学学报》2006年第11期2026-2029,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20163002);云南省自然科学基金(批准号:2003E0005Z)资助

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12.5nm)、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.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 films possessed an Im3m body-centered- cubic（BCC） array of distorted spherical pores with an average pore 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.

关 键 词：Y2O3 ND2O3 介孔薄膜 嵌段共聚物模板 蒸发诱导自组装 

分 类 号：O611.4[理学—无机化学] O614.33[理学—化学]