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Growth of boehmite nanofibers by assembling nanoparticles with surfactant micelles

Zhu, Huai, Gao, X., Song, D., Bai, Y., Ringer, Simon, Gao, Z., Xi, Y., Martens, Wayde N., Riches, J., & Frost, Ray L. (2004) Growth of boehmite nanofibers by assembling nanoparticles with surfactant micelles. Journal of Physical Chemistry Part B, 108(14), pp. 4245-4247.

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Abstract

It is known that boehmite (AlOOH) nanofibers formed in the presence of nonionic poly(ethylene oxide) (PEO) surfactant at 373 K. A novel approach is proposed in this study for the growth of the boehmite nanofibers: when fresh aluminum hydrate precipitate was added at regular interval to initial mixture of boehmite and PEO surfactant at 373 K, the nanofibers grow from 40 to 50 nm long to over 100 nm. It is believed that the surfactant micelles play an important role in the nanofiber growth: directing the assembly of aluminum hydrate particles through hydrogen bonding with the hydroxyls on the surface of aluminum hydrate particles. Meanwhile a gradual improvement in the crystallinity of the fibers during growth is observed and attributed to the Ostwald ripening process. This approach allows us to precisely control the size and morphology of boehmite nanofibers using soft chemical methods and could be useful for low temperature, aqueous syntheses of other oxide nanomaterials with tailorable structural specificity such as size, dimension and morphology.

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ID Code: 23564
Item Type: Journal Article
Additional Information: This article is freely available from the American Chemical Society website 12 months after the publication date. See links to publisher website in this record.
Additional URLs:
DOI: 10.1021/jp049485u
ISSN: 1520-6106
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2004 American Chemical Society
Deposited On: 17 Jun 2009 23:59
Last Modified: 02 Mar 2012 17:36

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