Open AccessAnisotropic membranes based on porous anodic alumina films.
Author(s) -
А. Н. Кокатев,
S. G. Vasiliev,
N. M. Yakovleva,
К. В. Степанова
Publication year - 2020
Publication title -
trudy kolʹskogo naučnogo centra ran
Language(s) - English
Resource type - Journals
ISSN - 2307-5252
DOI - 10.37614/2307-5252.2020.3.4.020
Subject(s) - anodizing , nanoporous , membrane , materials science , oxalic acid , electrolyte , barrier layer , fabrication , aluminium oxide , porosity , chemical engineering , aluminium , anode , layer (electronics) , nanopore , oxide , metal , nanotechnology , composite material , inorganic chemistry , metallurgy , chemistry , electrode , medicine , biochemistry , alternative medicine , pathology , engineering
In the present study, we report the development of a new type of anodic aluminium oxide membranes. Nanoporous alumina films have been fabricated by galvanostatic two-step anodizing technique. For the 1stgroup of samples at both stages was used water solution of oxalic acid as an electrolyte; and for the 2ndgroup at the 2ndstage was used a special multicomponent electrolyte. Using atomic force microscopy, it was found that a method of barrier layer thinning “from above” in combination with chemical removal of metal enables permeable anisotropic alumina membranes fabrication.