Core-shell silica particles with fibrous shell structure and tunable pore size were prepared by using a dul-template method. The pore size of the core-shell silica particles was affected greatly by the amount of octadecylamine, which as used as cosurfactant. The pore size could be enlarged from 7.1nm to 22.3nm while keeping the unique fibrous shell structure. After derivatized with C18, the separation...
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