Oxygen evolution and porous anodic alumina formation |
| |
Authors: | Xufei Zhu Hongbing Jia Huadong Yu Xuemei Xiao Xiuli Yang |
| |
Affiliation: | School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
| |
Abstract: | A new formation mechanism of porous anodic alumina (PAA) is proposed, which emphasizes the close relationship between pore generation and oxygen evolution during aluminum anodization. Two special experiments were designed to confirm the formation mechanism: (1) to introduce a reducing agent in anodization for oxygen suppression, and (2) to perform anodization under a reduced pressure for easy oxygen release. The results showed that both reducing agent and atmospheric pressure had a great effect on the morphology of the resultant film. This can be expected on the basis of our hypothesis about the formation mechanism of PAA, but cannot be easily explained by the existing theories. |
| |
Keywords: | Anodic alumina Porosity Formation mechanism Oxygen evolution Nanomaterials |
本文献已被 ScienceDirect 等数据库收录! |