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

Date

2015

Editor(s)

Advisor

Supervisor

Co-Advisor

Co-Supervisor

Instructor

Source Title

Journal of Materials Chemistry A

Print ISSN

2050-7488

Electronic ISSN

Publisher

Royal Society of Chemistry

Volume

3

Issue

7

Pages

3839 - 3846

Language

English

Journal Title

Journal ISSN

Volume Title

Series

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.

Course

Other identifiers

Book Title

Citation