Differential Selective Etching of Functional Groups Strategy for Preparation of Organic Hollow Porous Silica

In this study, different structural of organic hollow porous silica were prepared based on differential selective etching functional groups strategy, using ammonia as catalyst, cetyltrimethylammonium bromide (CTAB) pore-forming agent and emulsifier, cyano (CN-SiO 2 ) or vinyl (V-SiO formed by hydrolysis condensation 2-cyanoethyl triethoxysilane (CTES) (VTES) used cores, NH-SiO2 3-aminopropyl (APTES), SH-SiO mercaptopropyl trimethoxysilane (MPTMS) UD-SiO urea-propyl (UPTES) shells, separately. The morphology structure the products characterized scanning electron microscopy(SEM) transmission microscopy(TEM). study results showed that CN-SiO core was considered to be benefit for preparation compared V-SiO core. addition, core-shell obtained from NH-SiO tend changed into in alkaline condition account strategy.