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

    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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