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Titanate nanotubes were synthesized by hydrothermal treatment in concentrated NaOH solution followed by HCI washing.The as-prepared nanotubes were characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM),and N2 adsorption-desorption isotherm measurements (BET).The results displayed that the hydrothermal treatment temperature within 110-160~C not only affected the structure of the nanotube,but also the anatase-to-rutile transformation temperature.The nanotube could be obtained only in an appropriate concentration of NaOH solution.The diameter of the nanotube was 6-10 nm.The surface area of the product initially increased with increasing treatment temperature,to reach a maximum of about 63.0 m~2/g at 130℃,and then decreased with a further increase in temperature.
Titanate nanotubes were synthesized by hydrothermal treatment in concentrated NaOH solution followed by HCI washing.The as-prepared nanotubes were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and N2 adsorption-desorption isotherm measurements (BET). The results displayed that the hydrothermal treatment temperature within 110-160 ~ C not only affected the structure of the nanotube, but also the anatase-to-rutile transformation temperature. The nanotube could be obtained only in an appropriate concentration of NaOH solution. Diameter of the nanotube was 6-10 nm. The surface area of the product initially increased with increasing treatment temperature, to reach a maximum of about 63.0 m ~ 2 / g at 130 ° C, and then decreased with a further increase in temperature.