Monodisperse erythrocyte-like and hollow erythrocyte-like silica nanoparticles prepared by a simple template-free and surfactant-free sol–gel route
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This paper introduced a simple two-step aqueous method in which monodisperse erythrocyte-like silica nanoparticles could be prepared without surfactant and template by sol–gel method. KOH was used to form the asymmetrical silica nanoparticles through quickly condensation in rotation system. The erythrocyte-like hollow silica nanoparticles with the same external contour could be obtained by further hydrothermal. In addition, double-layer hollow erythrocyte-like and cage-like structures nanoparticles could also be acquired by hydrothermal reaction. A simple and green method was found to work in a dynamic process and produce asymmetrical structure getting rid of the minimization of interfacial energy.
KeywordsErythrocyte-like silica nanoparticles Hollow erythrocyte-like silica nanoparticles Template-free Surfactant-free Sol–gel method Hydrothermal
This work was supported by National Natural Science Foundation of China (Grant No. 51503006).
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Conflict of interest
The authors declare that they have no competing interests.
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