Synthesis of micro/mesoporous silica using poly(ethylene glycol) as a template

摘要

Analysis of isotherms of low-Temperature nitrogen adsorption-desorption has revealed the for- mation of a micro/mesoporous structure in silica resulting from the sol-gel transition of SiO2 in the presence of poly(ethylene glycol)s with different molecular masses used as templates. The specific surface area of pores has been determined by the BET and Langmuir methods; the volume and surface area of micropores have been estimated by the t-plot method; and the surface area and volume of pores, mesopore size distribution, and average pore diameter have been assessed using the Barrett-Joyner-Halenda method.