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Issue 7, 2015
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A porosity difference based selective dissolution strategy to prepare shape-tailored hollow mesoporous silica nanoparticles

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Abstract

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 °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.

Graphical abstract: A porosity difference based selective dissolution strategy to prepare shape-tailored hollow mesoporous silica nanoparticles

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Publication details

The article was received on 15 Nov 2014, accepted on 22 Dec 2014 and first published on 23 Dec 2014


Article type: Paper
DOI: 10.1039/C4TA06222A
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2015,3, 3839-3846
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    A porosity difference based selective dissolution strategy to prepare shape-tailored hollow mesoporous silica nanoparticles

    A. Yildirim and M. Bayindir, J. Mater. Chem. A, 2015, 3, 3839
    DOI: 10.1039/C4TA06222A

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