Compositional and structural characterization of nanoporous films produced by iron anodizing in ethylene glycol solution

被引：32

作者：

Jagminas, Arunas ^{[1
]}

Mazeika, Kestutis ^{[1
]}

Bernotas, Nerijus ^{[1
]}

Klimas, Vaclovas ^{[1
]}

Selskis, Algirdas ^{[1
]}

Baltrunas, Dalis ^{[1
]}

机构：

[1] State Res Inst Ctr Phys Sci & Technol, LT-02300 Vilnius, Lithuania

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 09期

关键词：

Nanostructures; Anodizing; Iron oxides; Mossbauer spectroscopy; HIGH-ASPECT-RATIO; OXIDE; MOSSBAUER; GROWTH; FLUORIDE;

D O I：

10.1016/j.apsusc.2010.11.113

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the composition and morphology of as-grown anodic oxide films onto the iron surface in an ethylene glycol solution containing some NH4F and H2O by anodizing under direct current bias. Decrease in the content of NH4F and the temperature of electrolyte allow us to form either nanochannel or nanotubular films over a larger potential window, ca. from 30 to 100 V. By this way, the films in thickness of up to 10 mu m have been formed. Mossbauer spectra recorded at room to cryogenic temperatures under conversion electron and transmission modes revealed the formation of lepidocrocite (gamma-FeOOH) film containing some Fe(OH)(2) and/or FeF2 center dot 4H(2)O. An increase in anodizing voltage results in fabrication of more porous and less Fe(II) compounds containing films. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3893 / 3897

页数：5

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