Porous niobium oxide films prepared by anodization in HF/H3PO4

被引：83

作者：

Choi, Jinsub ^{[1
]}

Lim, Jae Hoon ^{[1
]}

Lee, Sang Cheon ^{[1
]}

Chang, Jeong Ho ^{[1
]}

Kim, Kyung Ja ^{[1
]}

Cho, Min Ae ^{[1
]}

机构：

[1] Korea Inst Ceram Engn & Technol, Nanomat Applicat Div, Seoul 153801, South Korea

来源：

ELECTROCHIMICA ACTA | 2006年 / 51卷 / 25期

关键词：

anodization; niobium oxide; porous oxide;

D O I：

10.1016/j.electacta.2006.02.024

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Ordered porous niobium oxide with the diameter of less than 10 nm and the aspect ratio of more than 20 is prepared by anodization of niobium. foils at 2.5 V in the mixture of 1 wt% HF and 1 M H3PO4 for 1 h. In this study, the effects of the mixed electrolytes, anodic potential and anodization time on the preparation of porous niobium oxide are described based on the current-time transients during anodization and morphological observations. It is founded that a single HF electrolyte leads to the formation of pores as well as the fast dissolution of formed pores at the surface. The dissolution of the formed oxide is significantly retarded by the addition of appropriate amount of H3PO4. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：5502 / 5507

页数：6

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