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Nanorurki TiO2 : synteza i zastosowanie

Mazierski Paweł

Wiadomości Chemiczne

2021

[Z] 75, 11-12

1195--1209

Among all transition-metal oxides, TiO2 is one of the most studied compounds in materials science. Its tested in many applications such as biomedical, photochemical, electrical and environmental. Among these applications, maximization of the surface area to achieve the highest efficiency is crucial, thus nanostructured forms of TiO2 are very popular. TiO2 can be obtained in the form of zero-dimensional materials (nanoparticles), one-dimensional (nanowires, nanotubes), two-dimensional (nanosheets) and three-dimensional (nanospheres). Among these various nanostructured forms of TiO2, nanotubes are of the greatest interest due to high electron mobility, quantum confinement effects, a high specific surface area and very high mechanical strength. One-dimensional TiO2 nanotubes can be synthesized using the template, hydro/solvothermal, electrospinning and anodic oxidation methods, which leads to obtaining material in the form of a powder or a thin layer. Notwithstanding, ordered layers of TiO2 nanotubes obtained by anodic oxidation are particularly interesting in terms of application. This mini-review provides an overview of preparation methods of TiO2 nanotubes as well describes its most important applications with attention to key features.