One-pot synthesis of pore-expanded hollow mesoporous silica particles

摘要: Abstract One-pot hard/soft template-free synthesis of hollow structured mesoporous silica particles (H-MSPs) with enlarged pore sizes was developed. By a simplified in situ hydrothermal treatment under mild conditions (70 °C), interior evolution to final size ~150 nm successfully induced for the as-prepared from sol–gel solution. The were evenly spherical an average particle diameter 350 nm, as well mean 5 nm shell. Pore-swelling agents and aminosilane demonstrated contribute chemical irregularities network formation during growth, consequently leading selective dissolution silica.