Title

Morphology and Shape Control of Porous Silica Nanostructures with Dual-Templating Approaches

Authors

Authors

J. Nanosci. Nanotechnol.

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Disp. Technol.

Keywords

Lithocholic Acid; Cetyltrimethylammmonium Bromide; Pluronic F127; Co-Assembly; Two-Phase Synthesis; Porous Silica Nanostructures; MESOPOROUS SILICA; BILE-SALT; LITHOCHOLATE NANOTUBES; SURFACTANT; TEMPLATES; LIGHT-SCATTERING; MIXED MICELLES; PORE-SIZE; TUBES; SYSTEMS; GROWTH; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials; Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter

Abstract

There has been great interest in the synthesis of porous silica nanostructures because of their potential applications in catalysis, adsorption, molecular separation, and biomedical engineering. In this paper, we report the synthesis of porous silica nanostructures with varied morphologies and shapes from two-phase systems by using lithocholic acid (LCA) and cetyltrimethylammmonium bromide (CATB) or LCA and Pluronic F127 in the lower ammonia aqueous phase as dual directing agents and tetraethylsiloxane (TEOS) in the upper oil phase as a silica precursor. Porous silica spheres are formed by using LCA/CTAB as a dual directing agent, while silica fibers with pits are synthesized by using LCA/F127 as a dual directing agent. The straight-to-helical shape transition of silica fibers with pits can be achieved by increasing the ammonia concentration in the low aqueous phase.

Subjects

W. L. Liang; S. H. He; Y. G. Wang;J. Y. Fang

Volume

14

Issue/Number

6

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

4424

Last Page

4430

WOS Identifier

WOS:000332339500064

ISSN

1533-4880

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