A simple one-pot route to mesoporous silicas SBA-15 functionalized with exceptionally high loadings of pendant carboxylic acid groups

摘要

Ordered SBA-15 functionalized with a high loading of pendant carboxylate groups has been synthesized via co-condensation of tetraethoxysilane (TEOS) and carboxyethylsilanetriol sodium salt (CES) templated by Pluronic P123 under acidic conditions.rnFunctionalization of mesoporous silica materials with organic groups has opened new possibilities for their various applications. Since the content of organic groups is a key factor that determines many important properties of the hybrid materials, such as adsorption capacity for metal ions, enhanced hydrothermal stability, and surface reactivity and hydrophobicity, synthesis of ordered mesoporous materials with a high content of organic functional groups uniformly distributed over the ordered structure is highly desirable.