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

Adem Yildirim, Mehmet Bayindir

Research output: Contribution to journalArticle

29 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)3839-3846
Number of pages8
JournalJournal of Materials Chemistry A
Volume3
Issue number7
DOIs
StatePublished - Feb 21 2015

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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