Ultra-High Density Single Nanometer-Scale Anodic Alumina Nanofibers Fabricated by Pyrophosphoric Acid Anodizing

被引：41

作者：

Kikuchi, Tatsuya ^{[1
]}

Nishinaga, Osamu ^{[1
]}

Nakajima, Daiki ^{[1
]}

Kawashima, Jun ^{[1
]}

Natsui, Shungo ^{[1
]}

Sakaguchi, Norihito ^{[2
]}

Suzuki, Ryosuke O. ^{[1
]}

机构：

[1] Hokkaido Univ, Div Mat Sci & Engn, Fac Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

[2] Hokkaido Univ, Ctr Adv Res Energy & Mat, Fac Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

基金：

日本学术振兴会;

关键词：

ORDERED POROUS ALUMINA; NANOTUBE ARRAYS; THIN-FILM; OXIDE; ANODIZATION; GROWTH; EFFICIENT; NANOSTRUCTURES; MESOCHANNELS; NANOWIRES;

D O I：

10.1038/srep07411

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Anodic oxide fabricated by anodizing has been widely used for nanostructural engineering, but the nanomorphology is limited to only two oxides: anodic barrier and porous oxides. Therefore, the discovery of an additional anodic oxide with a unique nanofeature would expand the applicability of anodizing. Here we demonstrate the fabrication of a third-generation anodic oxide, specifically, anodic alumina nanofibers, by anodizing in a new electrolyte, pyrophosphoric acid. Ultra-high density single nanometer-scale anodic alumina nanofibers (1010 nanofibers/cm(2)) consisting of an amorphous, pure aluminum oxide were successfully fabricated via pyrophosphoric acid anodizing. The nanomorphologies of the anodic nanofibers can be controlled by the electrochemical conditions. Anodic tungsten oxide nanofibers can also be fabricated by pyrophosphoric acid anodizing. The aluminum surface covered by the anodic alumina nanofibers exhibited ultra-fast superhydrophilic behavior, with a contact angle of less than 16, within 1 second. Such ultra-narrow nanofibers can be used for various nanoapplications including catalysts, wettability control, and electronic devices.

引用

页数：6

共 53 条

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