The heterostructured AAO/CeO₂ nanosystem fabricated by electrodeposition for charge storage and hydrophobicity

Tilted cathode was adopted to prepare porous anodic alumina membrane (PAAM) during the second aluminum anodic oxidation (AAO). A heterostructured AAO/CeO₂ nanosystem was fabricated by filling CeO₂ into the PAAM by electrochemical deposition. The larger the intersection angle of the cathode, the more the charge storage of the fabricated system. A lower potential scan rate is beneficial to the electrochemical charge storage of the system. With the cathode intersection angle increasing, the hydrophobicity of the AAO/CeO₂ system is greatly improved. As the 40 is the optimum angle, the charge storage and hydrophobicity of the system increase with the increasing cathode intersection angle up to 40. The AAO/CeO₂ system could be utilized in both charge storage and self-cleaning.