Open AccessStudy of long-term changes in visible-light transmittance of porous alumina membranes
Author(s) -
Е. Н. Муратова,
С. С. Налимова,
В. А. Мошников
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1984/1/012022
Subject(s) - membrane , transmittance , porosity , materials science , electrolyte , anodizing , chemical engineering , adsorption , sulfuric acid , electrochemistry , degradation (telecommunications) , composite material , chemistry , electrode , optoelectronics , organic chemistry , metallurgy , aluminium , electronic engineering , biochemistry , engineering
The paper presents a study of the optical properties of porous alumina membranes obtained by electrochemical anodizing in electrolytes based on sulfuric and orthophosphoric acids. The pore size was analyzed by SEM. The degradation of transmittance of membranes after one year and six years storage was studied. The change one year later in optical properties was explained by the adsorption of water molecules. Six years later, an increase in throughput is observed for all membranes. At present, there are no theoretical models that can explain obtained experimental results and additional studies in this area are necessary.