Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 7, Pages 3839-3846Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta06222a
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Funding
- TUBITAK [111T696]
- TUBITAK-BIDEB Ph.D. fellowship
- Turkish Academy of Sciences (TUBA)
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This article reports a general method to prepare hollow mesoporous silica nanoparticles with tailored morphology. The method is based on selective dissolution of porous cores of solid silica shell/porous silica core nanoparticles under mild conditions without the need for corrosive or toxic etchants. First, core-shell nanospheres or nanorods are prepared in a one-pot reaction. Then, mesoporous cores of the nanoparticles are selectively dissolved by incubating them in phosphate buffered saline (PBS) at 65 degrees C for one day. Surprisingly, shells of the resulting hollow particles contain both small and large mesopores which makes the particles very suitable for adsorption and desorption of a wide range of molecules. In addition, we proposed a mechanism for selective dissolution of porous cores of the core-shell nanoparticles.
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