A Sandwich Porous Alumina Nanostructures Based on Anodic Alumina
Engineering and Technology Journal,
2010, Volume 28, Issue 11, Pages 2091-2102
AbstractA sandwich porous anodic alumina membrane (PAA/Al/PAA) films was produced
using two-step anodization approach on both sides of (250) μm pure aluminum foil
electrode as an anode. A single sheet of stainless steel or graphite was used as a
cathode. Anodization on both sides of aluminum sheet was achieved. The anodization
processes and pore formation were studied and discussed in this work. The produced
alumina membrane (5-30) μm thick was analyzed using scanning electron microscopy
(SEM). The SEM image shows the PAA membranes has a well-defined nanostructure.
The average pore diameter reaches (25) nm. The produced Al 2O3 membrane growing
on both sides of aluminum sheet was separated into a twin nano membrane.
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