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Fabrication and Characterization of Nanostructured Titanate Materials by the Hydrothermal Treatment Method

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Abstract:

The synthesis and characterization of one-dimensional (1-D) tubular and fibrous nanostructured materials have recently received highly attention. Various morphologies of 1-D nanostructured titanate materials including nanosheets, nanotubes, nanowires, and nanoribbons have recently been successfully synthesized using the alkaline hydrothermal method. In spite of the controversy of the chemical structures and formation mechanisms, titanate nanostructures have attracted much attention on applications of dye-sensitized solar cell, hydrogen sensing, lithium storage and photocatalysis because of their unique features of high specific surface area, ion-exchange capacity and aspect ratio, and unique optical and electrochemical properties. The morphology and microstructure of titanate nanostructures are highly dependent on the preparation conditions. In this review, we highlight the synthesis of TiO2-derived nanomaterials under various hydrothermal conditions. The patents for fabrication of various morphologies of nanostructures are also introduced. Effects of preparation parameters including hydrothermal temperature, duration, alkaline concentration, starting materials, and post-treatment on the morphology and microstructure of titanate nanomaterials are reviewered. In addition, the microwave-assisted method for fabrication of 1-D titanate nanostructures is discussed and compared. The applications of titanate nanomaterials in photocatalysis, ion-exchange, and lithium storages are also introduced.





Keywords: One-dimensional (1-D) nanomaterials; hydrothermal treatment; microwaveassisted method; nanostructured titanates; nanotubes; titanium dioxide

Document Type: Research Article

DOI: https://doi.org/10.2174/187221008784534497

Publication date: 2008-06-01

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