An interesting radiolarian-like silica sphere has been prepared from a water–diethyl ether binary solvent system, which is characterized by SEM, TEM, XRD, and adsorption experiments. The results indicate its particular morphology and hierarchical structure, i.e., hollow interior and a crust wherein two types of mesopores with radial orientation are located. This silica product embodies a novel morphosynthesis involving unstable water–oil interface.
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Lin et al. (2005) studied this question.
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