Self-assembled template-directed synthesis of one-dimensional silica and titania nanostructures.
Langmuir
; 27(3): 1079-84, 2011 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-21214195
ABSTRACT
Mineralized biological materials such as shells, skeleton, and teeth experience biomineralization. Biomimetic materials exploit the biomineralization process to form functional organic-inorganic hybrid nanostructures. In this work, we mimicked the biomineralization process by the de novo design of an amyloid-like peptide that self-assembles into nanofibers. Chemically active groups enhancing the affinity for metal ions were used to accumulate silicon and titanium precursors on the organic template. The self-assembly process and template effect were characterized by CD, FT-IR, UV-vis, fluorescence, rheology, TGA, SEM, and TEM. The self-assembled organic nanostructures were exploited as a template to form high-aspect-ratio 1-D silica and titania nanostructures by the addition of appropriate precursors. Herein, a new bottom-up approach was demonstrated to form silica and titania nanostructures that can yield wide opportunities to produce high-aspect-ratio inorganic nanostructures with high surface areas. The materials developed in this work have vast potential in the fields of catalysis and electronic materials.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Titânio
/
Dióxido de Silício
/
Nanoestruturas
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article