Room temperature anodization of aluminum at low voltage

الملخص EN

Membranes with nanometer-scale features have many applications, such as in optics, electronics, catalysis, selective molecule separation, filtration and purification, biosensing, and single-molecule detection.

Anodiztion process was conducted using 15, 20, 30 and 35 % by volume phosphoric acid.

Results showed that Porous Anodized Aluminum (PAA) with ideal nanopore arrays can be fabricated at room temperature by one-step anodization on high purity aluminum foil at 5V.

Morphology of the PAA was characterized by scanning electron microscopy (SEM).

The electrochemical behavior of anodized aluminum was studied in 0.1M Na2SO4 solutions using electrochemical impedance spectroscopy (EIS).

The highest resistance of the porous layer (Rp) was detected for the samples anodized in 20% phosphoric acid.