Synthesis of Mesoporous Silicas with a Cationic Surfactant-Anionic Polymer Mixture as Template

Different structural mesoporous silicas have been synthesized at high temperature using the Stöber method by utilizing a mixture of cationic cetyltrimethylammonium bromide and anionic water-soluble sodium polyacrylate (NaPAA) as template. The synthetic conditions, which include the amount of ethanol, crystallization temperature, crystallization time, polymer concentration, and molecular weight, have significant influence on the structures and surface morphologies of the synthetic product. This could be attributed to a combined effect of NaPAA and ethanol.

摘要以阳离子表面活性剂十六烷基三甲基溴化铵和阴离子水溶性聚丙烯酸钠 (NaPAA) 混合物为模板剂, 在较高温度和碱度下采用 Stöber 法合成介孔材料. 通过调变助剂乙醇含量、晶化温度、晶化时间、NaPAA 含量和分子量等制得结构和形貌不同的硅基介孔材料. 研究表明, 这是 NaPAA 和乙醇共同作用的结果.

Mesoporous silicas with different structures and morphologies have been synthesized utilizing a mixture of cationic cetyltrimethylammonium bromide and anionic water-soluble sodium polyacrylate as template.Figure optionsDownload as PowerPoint slide