Novel Three-Dimensional Nanoporous Alumina as a Template for Hierarchical TiO2 Nanotube Arrays

Authors

  • Daoai Wang,

    Corresponding author
    1. Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany
    • Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany.
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  • Lianbing Zhang,

    1. Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany
    2. CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
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  • Woo Lee,

    1. Korea Research Institute of Standards and Science (KRISS), Yuseong 305-340 Daejeon, South Korea
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  • Mato Knez,

    1. Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany
    2. CIC nanoGUNE Consolider, Tolosa Hiribidea 76, 20018 Donostia-San Sebastian, Spain
    3. Ikerbasque Basque Foundation for Science, Alameda Urquijo 36-5, 48011 Bilbao, Spain
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  • Lifeng Liu

    Corresponding author
    1. Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany
    2. International Iberian Nanotechnology Laboratory (INL), 4715-330 Braga, Portugal
    • Max Planck Institute of Microstructure Physics, Weinberg 2, D-06120 Halle, Germany.
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Abstract

original image

Hierarchical micro-/nano-structures made easy. By using extremely rough, chemically etched microstructured aluminium foils, anodization in phosphoric acid under very harsh conditions, e.g., 10 wt% phosphoric acid and room temperature, can be repeatedly accomplished without suffering from breakdown. As a result, an alumina membrane with a three-dimensionally distributed nanopore structure is formed, which can be used as a general template to fabricate hierarchical micro-/nano-structures.

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