改性中孔分子筛SBA-16薄膜的合成及表征  

Synthesis and Characterization of Modified Mesoporous Silica SBA-16 Film

作　　者：史克英[1] 池玉娟[1] 金效齐[2] 徐敏[2] 袁福龙[1] 付宏刚[1] 

机构地区：[1]黑龙江大学化学化工与材料学院物理化学实验室,哈尔滨150080 [2]哈尔滨师范大学化学系,哈尔滨150080

出　　处：《化学学报》2005年第10期885-890,i001,共7页Acta Chimica Sinica

基　　金：国家自然科学基金重点项目(No.20431013);国家自然科学基金项目(No.20271019);黑龙江省博士后基金资助项目.

摘　　要：在酸性条件下,以导电玻璃(ITO)为基底合成了SBA-16分子筛膜.所制备的SBA-16膜孔径均匀,具有体心立方结构(属于Im3m空间群),SBA-16膜的晶胞参数为18.6nm.TEM,SEM和XRD等技术研究表明,加入少量的AlCl3盐于形成膜的母液并且采用RSiX3对导电玻璃基底进行处理,能够明显改善SBA-16膜的连续性而不影响孔结构.红外(FTIR)研究结果表明,SBA-16膜的表面硅羟基和结晶水很少,膜很稳定.XPS研究表明,加入少量MnCl2对SBA-16膜进行改性,可以提高膜的导电性.Continuous mesoporous silica thin films with three-dimensional (3D) accessible pore structures have been prepared by a dip-coating technique using F-127 surfactants in nonaqueous media under acidic conditions, and can be grown on ITO. Films are shown to be crystalline. XRD study displays that the mesoporous film is SBA-16 with Im3m space group symmetry, and SBA-16 film with unit cell parameter a of 18.6 nm for calcined SBA-16 film, and the mesoporous openings about 7 similar to 8 run. Adding a little of AlCl3 into mother liquor of SBA-16, or the surface of ITO with RSiX3, would enhance the integrity of SBA-16 film but did not change the structure of SBA-16 film. The results of FTIR indicate that there was a little -OH or crystal H2O on the surface of SBA-16 film, the stability of SBA-16 film was good. The result of XPS demonstrates that, adding a little of MnCl2 into SBA-16 film, the electricity of modified SBA-16 was improved.

关 键 词：中孔分子筛 合成 改性 表征 薄膜 体心立方结构 ALCL3 XPS研究 MnCl2 酸性条件 分子筛膜 导电玻璃 晶胞参数 玻璃基底 研究结果 膜孔径 空间群 TEM XRD SEM 行处理 孔结构 连续性 结晶水 硅羟基 导电性 表面 

分 类 号：TQ425.25[化学工程]