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General and facile syntheses of metal silicate porous hollow nanostructures.

Authors
Type
Published Article
Journal
Chemistry - An Asian Journal
1861-471X
Publisher
Wiley Blackwell (John Wiley & Sons)
Publication Date
Volume
5
Issue
6
Pages
1439–1444
Identifiers
DOI: 10.1002/asia.200900561
PMID: 20397186
Source
Medline
License
Unknown

Abstract

Porous hollow nanostructures have attracted intensive interest owing to their unique structure and promising applications in various fields. A facile hydrothermal synthesis has been developed to prepare porous hollow nanostructures of silicate materials through a sacrificial-templating process. The key factors, such as the concentration of the free metal cation and the alkalinity of the solution, are discussed. Porous hollow nanostructures of magnesium silicate, nickel silicate, and iron silicate have been successfully prepared by using SiO(2) spheres as the template, as well as a silicon source. Several yolk-shell structures have also been fabricated by a similar process that uses silica-coated composite particles as a template. As-prepared mesoporous magnesium silicate hollow spheres showed an excellent ability to remove Pb(2+) ions in water treatment owing to their large specific surface and unique structures.

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