Electro-chemical Detachment Process of Through-hole Porous Anodic Alumina Membrane

Abstract

Abstract: A well-ordered porous anodic alumina (PAA) membrane was achieved by anodic oxidization of the aluminium electrode at constant voltages of 30-50V in a solution of 0.3mol·L^-1 H₂C₂O₄. A new electrical detachment process was carried out to detach the PAA membranes from aluminium base in the solution of HClO₄ and CH₃OH. The mechanism of the electrical detachment process and the factors of the pore diameter and thickness of the barrier layer were researched. A larger size of PAA (2cm×2cm) was obtained with thickness of 30-100μm and full-controlled open-hole pores. Compared with reported chemical process, the present method is nore simple and rapid and free of metal ions residuce. It is important for research of nanostructure assembling techniques.

Key words: porous anodic alumina membranes, anodic oxidization, nanostructure

CLC Number:

O611
O646

GAO Lu-Mei,WANG Pang-Pang,WU Xiao-Qing,SONG Xiao-Ping. Electro-chemical Detachment Process of Through-hole Porous Anodic Alumina Membrane[J]. Journal of Inorganic Materials.

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Electro-chemical Detachment Process of Through-hole Porous Anodic Alumina Membrane

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