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Abstract
Mesoporous silica nanospheres with radially oriented channels have been obtained by adjusting the interaction between cetyltrimethyl ammonium bromide (CTAB) and protic ionic liquid (tripropylamine acetate) through changing the PIL content. The properties of the samples were characterized by N2 adsorption/desorption techniques, scanning electron microscope and transmission electron microscopy. The radially oriented mesochannels, wrinkled surface morphology and particle sizes of the obtained samples were varied with different mass ratios of CTAB to PIL. Compared with silica spheres prepared without PIL, the radial mesochannels slightly bent and degenerated, meanwhile, the particle sizes were decreased from 550 to 350 nm accordingly. Moreover, the formation mechanism of the silica spheres with radially oriented channels and hierarchical porous structure which based on the interaction between PIL and CTAB was tentatively elucidated.
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