Study on the Realization of High Specific Surface Area Al2O3 through Internal Anodization of Honeycomb Aluminum

Journal: Architecture Engineering and Science DOI: 10.32629/aes.v1i1.161

Haibo Li, Yue Lin, Zhenhui Chen

College of Marine Science and Engineering, Shanghai Maritime University

Abstract

In order to increase the specific surface area of the material, a porous alumina film was prepared in a sulfuric acid system using a honeycomb aluminum substrate and a constant voltage anodization method. The results indicate that at a lower voltage, internal anodization of honeycomb aluminum can be achieved. By extending the anodizing time to 8h, an anodized Al2O3 film with a maximum specific surface area of 10.147g / m2 can be obtained. The pores are mainly mesoporous, with pores densely penetrating, and the diameter of the pores ranges from 9.42nm to 10.86 nm. This method has the characteristics of simple process. The anodized Al2O3 porous film has great application potential. 

Keywords

honeycomb aluminum, anodizing, specific surface area

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