Fabrication of different silica nanotubes and examination of their catalytic activity in organic solvents

Fabrication of different silica nanotubes and examination of their catalytic activity in organic... Silica nanotubes (SNTs) with different geometrical architectures and comparable pore sizes were fabricated inside the one-dimensional (1D) channels of anodic alumina membrane (AAM) using different nonionic Brij template surfactants. Experimental results revealed the formation of SNTs with ordered 1D, two-dimensional (2D), three-dimensional (3D), and wormlike mesostructures. Cytochrome C (Cyt C) was chosen as a hemoprotein to be immobilized inside the SNTs. Under the same starting Cyt C concentration, the amount immobilized was found to be dependent on the SNT mesostructure. Unlike native Cyt C, which lost its activity while interacting in organic solvents, Cyt C entrapped within silica nanotube hybrid membrane (SNM) showed remarkable catalytic conversion activity in organic solvents, with wormlike mesostructure being favorable over ordered mesostructures. This could be ascribed to facile access to active centers of Cyt C due to the random orientations of wormlike SNTs. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Fabrication of different silica nanotubes and examination of their catalytic activity in organic solvents

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry; Catalysis; Physical Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-011-0316-9
Publisher site
See Article on Publisher Site

Abstract

Silica nanotubes (SNTs) with different geometrical architectures and comparable pore sizes were fabricated inside the one-dimensional (1D) channels of anodic alumina membrane (AAM) using different nonionic Brij template surfactants. Experimental results revealed the formation of SNTs with ordered 1D, two-dimensional (2D), three-dimensional (3D), and wormlike mesostructures. Cytochrome C (Cyt C) was chosen as a hemoprotein to be immobilized inside the SNTs. Under the same starting Cyt C concentration, the amount immobilized was found to be dependent on the SNT mesostructure. Unlike native Cyt C, which lost its activity while interacting in organic solvents, Cyt C entrapped within silica nanotube hybrid membrane (SNM) showed remarkable catalytic conversion activity in organic solvents, with wormlike mesostructure being favorable over ordered mesostructures. This could be ascribed to facile access to active centers of Cyt C due to the random orientations of wormlike SNTs.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: May 7, 2011

References

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