Mesoporous organosilica hollow microspheres with hierarchical structures on the shell

Zhang, Xiaoyan, Liu, Tingting, Sun, Weidong and Liu, Jian (2013) Mesoporous organosilica hollow microspheres with hierarchical structures on the shell. Journal of Nanoscience and Nanotechnology, 13 4: 3046-3053. doi:10.1166/jnn.2013.7377

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Author Zhang, Xiaoyan
Liu, Tingting
Sun, Weidong
Liu, Jian
Title Mesoporous organosilica hollow microspheres with hierarchical structures on the shell
Journal name Journal of Nanoscience and Nanotechnology   Check publisher's open access policy
ISSN 1533-4880
1533-4899
Publication date 2013-04-01
Year available 2013
Sub-type Article (original research)
DOI 10.1166/jnn.2013.7377
Volume 13
Issue 4
Start page 3046
End page 3053
Total pages 8
Place of publication Valencia, CA, United States
Publisher American Scientific Publishers
Collection year 2014
Language eng
Abstract Hierarchical mesoporous organosilicas with hollow structures have been readily synthesized from one template approach by using Pluronic P123 as a surfactant and 1,2-bis(trimethoxysilyl)ethane as precursor in mild HAc-NaAc (pH = 4.4) buffer solution. The obtained hierarchical mesoporous organosilica hollow spheres with raspberry-like morphology have at least three level hierarchical structures: (1) hollow micro sphere (particle size of 10 to 35 μm), (2) solid nanospheres (350∼600 nm), the coexistence of mesopore (pore diameter, 12 nm) and micropore (pore diameter, 0.8 nm) on the shell. It was found that the hollow spheres with smooth surface and raspberry-like morphology could be controllably synthesized by varying the stirring time. Alcohols with different chains were also investigated, the hydrophilic alcohol with more –OH such as glycerol has been found play an important role in the synthesis of such hierarchically hollow sphere. These organosilica hollow spheres with hierarchical porosity are promising candidates for applications in nanoreactors, selective sorption, and controlled release.
Keyword Mesoporous hollow spheres
Periodic mesoporous organosilica
Hierarchical structure
Emulsion template
Vesicles
Sba-15
Mesostructured silica/surfactant composites
Silica
Spheres
Nanospheres
Transformations
Adsorption
Morphology
Thickness
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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