Hierarchical Structures: Novel Three-Dimensional Nanoporous Alumina as a Template for Hierarchical TiO2 Nanotube Arrays (Small 7/2013)

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 titania nanotube arrays are replicated from an anodic aluminium oxide membrane with three-dimensionally distributed nanopore structures by D. Wang, L. Liu, and co-workers using atomic layer deposition. On page 1025, anodization in phosphoric acid is accomplished under very harsh conditions using rough, chemically etched, microstructured aluminium foils. The microstructured aluminium provides a unique platform to explore the 3D evolution of oxide nanopores during anodization. More importantly, the resulting 3D nanoporous alumina can act as a general template to fabricate a wide range of hierarchical micro-/nanostructures that cannot be easily realized by conventional physical and chemical means.

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