Organic‐Functionalized Single‐Walled Aluminosilicate Nanotubes
Author(s)
Kang, Dun-Yen
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Abstract
Synthetic single-walled metal oxide (aluminosilicate) nanotubes are
emerging materials for a number of potential applications involving
molecular transport and adsorption; due to their unique pore structure,
high surface reactivity, and controllable dimensions. In this talk, we
describe recent progress on the synthesis, functionalization, and molecular
diffusion and adsorption properties of these materials. We first discuss
the structure, synthesis, and characterization of these materials.
Thereafter, functionalization of the nanotube interior is an attractive target,
but was initially impeded by its high surface silanol density and
resulting hydrophilicity. Controlled dehydration and dehydroxylation of
the nanotubes is critical for the success of functionalization efforts. We
employ a range of solid-state characterization tools to elucidate dehydration
and dehydroxylation phenomena in the nanotubes as a function
of heat treatment. With an appropriate heat-treatment process, we
show that the SWNT inner surface can then be functionalized with various
organic groups of practical interest via solid-liquid heterogeneous
reactions. We also present examples of experimental measurements
and computational predictions of the adsorption and transport properties
of these materials.
Sponsor
Dow Chemical Company
Date
2011-10-05
Extent
29:31 minutes
Resource Type
Moving Image
Resource Subtype
Lecture