基于盐效应合成有序ZrSBA-15介孔材料

Salt-mediated synthesis of highly ordered ZrSBA-15meso-structures

以三嵌段共聚物PEO20PPO70PEO20(P123)作为模板剂,正硅酸乙酯为硅源,通过氧氯化锆与NaCl之间的协同作用一步合成出具有六方板状形貌短孔道的ZrSBA-15介孔材料。分别采用傅里叶变换红外光谱(FTIR)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、N2吸附-脱附和小角X射线衍射等手段对合成ZrSBA-15进行了表征。结果表明,所合成出的ZrSBA-15具有与传统SBA-15类似的高度有序的介孔结构。

Highly ordered mesoporous ZrSBA-15 silica with hexagonal-platelet morphology was synthesized through a hydrothermal route using pluronic PEO20PPO70PEO20(P123) as a template, tetraethyl-orthosilicate as a silica source, by the synergy of zirconium oxychloride and sodium choride. The as-synthesized materials were characterized by transmission electron microscopy(TEM), scanning electron microscopy(SEM), fourier-transform infrared spectroscopy(F TIR),N 2 adsorption-desorption isotherms and LXRD.The results demonstrate that ZrSBA-15materials have highly ordered two-dimensional hexagonal mesoporous structure similar to conventional SBA-15.