Аннотация
Porous materials were prepared by stacking needle-like titania particles.
The uniform, needle-like titania particles were synthesized by hydrothermal
treatment of titanium hydroxide gel containing ethylenediamine. A
seeding technique controlled the particle size of them. The obtained
particles were dispersed in aqueous solutions with various pH values
and vacuum-filtered to form bulk materials. Porous materials with
uniform microstructure were obtained when the pH of the suspension
was adjusted to the value suitable for generating electrostatic repulsion
between dispersed titania particles. Changing the size of component
particles also controlled the pore size of the porous titania.
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