Reduction of nanoparticle deposition during fabrication of porous anodic alumina |
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| Authors: | Jianning Ding Yun Zhu Ningyi Yuan Guqiao Ding |
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| Affiliation: | a Center for Low-dimensional Materials, Micro-nano Devices and System, Changzhou University, Changzhou 213164, Chinab Jiangsu Key Laboratory for Solar Cell Materials and Technolgy, Changzhou 213164, Chinac State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 865 Changning Road, Shanghai 200050, China |
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| Abstract: | In this paper, we present evidences of nanoparticle deposition on porous anodic alumina (PAA) surface under different anodizing conditions, and discuss the formation mechanism of precipitations. Low-temperature anodization, vigorous stirring and ultrasound-assisted anodization are proposed to reduce the hydrolysis product or hinder its deposition on the surface as well as inside nanopores of PAA. It is discovered that the ultrasound is very efficient to prevent the deposition of Al3+ hydrolysis product on PAA. This study is of great value for realizing ordered PAAs with clean surface. |
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| Keywords: | Hydrolysis Porous anodic alumina Nanoparticle Deposition Ultrasound |
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