| Abstrakt: |
TiO2 is one of the most important materials in modern industrial societies because of its outstanding chemical and electrical properties. Many properties of TiO2, including its charge transport behaviors, grain boundaries, surface-to-volume ratio, and contact with surrounding systems, are strongly influenced by its nanoscale architecture. In this regard, TiO2 nanotubes produced by anodization have received extensive attention as a promising TiO2 architecture because of their unique one-dimensional configuration that includes well-defined nanostructures with a vertical orientation. These architectural features enable efficient charge transport along the axial direction. However, early anodized TiO2 nanotubes suffered several drawbacks including limited substrate and singly open-ended nanostructure restrict their further applications. To address these challenges, researchers have developed advanced TiO2 nanotubes, and several TiO2 nanotube structures, including freestanding membranes, doubly open-ended nanotubes, and hierarchical structures, have been reported, and these TiO2 nanotubes have exhibited enhanced performance in various applications. In this article, we review recent advances in the structural developments of anodized TiO2 nanotubes and the applications of these materials in the field of solar energy. Schematic diagram of the characteristics and applications of TiO2 nanotubes. [ABSTRACT FROM AUTHOR] |
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