Electrochemical fabrication and characterization of lepidocrocite (γ-FeOOH) nanowire arrays

✍ Scribed by A. Jagminas; K. Mažeika; E. Juška; J. Reklaitis; D. Baltrūnas

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 468 KB
• Volume: 256
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/j.apsusc.2010.01.064

✦ Synopsis

We report on the fabrication of g-phase iron oxyhydroxide (g-FeOOH, lepidocrocite) nanowire (nw) arrays within the alumina pores by electrodeposition. An aqueous solution, friendly to alumina matrix, was generated and applied in this study for uniform deposition of g-FeOOH nw arrays directly through the alumina barrier layer using an alternating current (ac) mode. As-deposited nanowired products were characterized using 57 Fe Mo ¨ssbauer spectroscopy (MS), atomic absorption spectrophotometry analysis, field-emission scanning electron microscopy, UV-vis transmission spectroscopy, transmission electron microscopy and X-ray diffraction. The formation of pure lepidocrocite nw arrays in the alumina pores with the average Ø pore of 45 and 150 nm was verified by transmission MS at cryogenic temperatures.