Nanostructured materials prepared by use of ordered porous alumina membranes

Yuanzhe Piao, Hyunchang Lim, Ji Young Chang, Won Yong Lee, Hasuck Kim

Research output: Contribution to journalConference article

123 Citations (Scopus)

Abstract

We report on three different methods to prepare nanostructured materials using highly ordered porous alumina membranes as templates: (1) firstly, a new and simple method, termed as the paired cell method, was developed for the preparation of inorganic nanowires. Several kinds of inorganic nanowires were synthesized using this method. The structure and composition of these nanowires were determined by field emission scanning electron microscopy, transmission electron microscopy and energy dispersive X-ray spectroscopy. (2) Secondly, highly ordered platinum nanowire arrays were prepared by electrochemical method with the help of porous alumina membrane templates. The structure and composition of these nanowire arrays were also characterized by various experimental techniques. The electrochemically active surface area of the nanowire arrays was determined by cyclic voltammetry based on hydrogen adsorption. Results showed that the platinum nanowire arrays exhibited a large surface area. (3) Finally, we also present a simple and reliable procedure for the preparation of highly ordered metal nanohole and nanopillar arrays, based on the anodic oxidation of aluminum and vacuum evaporation technology. The field emission scanning electron microscopic images revealed that these metal nanostructure arrays were highly ordered over a large area. The nanoimprinting of aluminum surfaces using the as-prepared chromium nanopillar arrays was demonstrated, resulting in periodic indentation on the aluminum surface.

Original languageEnglish
Pages (from-to)2997-3013
Number of pages17
JournalElectrochimica Acta
Volume50
Issue number15
DOIs
Publication statusPublished - 2005 May 20
EventElectrochemistry at Nanoscale Structuring, Characterization and Theories -
Duration: 2004 Mar 72004 Mar 10

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

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