水熱法によるH-Ti-Oナノチューブ合成と構造評価(<特集>セラミック材料)

概要

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The nanotubular products were synthesized by hydrothermal treatments of anatase-type TiO_2 in NaOH aqueous solution. In order to clarify the consolidation of nanotube, the effect of several washing treatments with deionized water, HC1 solution, or dehydrated ethanol, on the structure and the composition of nanotubes was investigated in this study. Especially, the characterization of microstructure of these nanotubular products was examined by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray absorption fine structure (XAFS). As a result, it was found that nanotubes were formed during the hydrothermal treatments, not during the washing treatments. In addition, it was clearified that the nanotubes were composed of layered Na-Ti-O, and H-Ti-O nanotubes were obtained by ion-exchange of Na^+ for H^+ in Na-Ti-O nanotubes by washing with deionized water or anhydrous ethanol and successively with HC1 solution.
社団法人日本材料学会の論文
2006-07-15