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1 Archives of Metallurgy and Materials

1 2015

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Large-Area Sodium Titanate Nanorods Formed On Titanium Surface Via NaOH Alkali Treatment

100%

Lee K. , Yoo D.

Archives of Metallurgy and Materials

2015

tom Vol. 60, iss. 2B

1371--1374

Ti surfaces covered with large sodium titanate nanorods act as efficient electrodes for energy conversion and environmental applications. In this study, sodium titanate nanorod films were prepared on a Ti substrate in a 5M NaOH aqueous solution followed by heat treatment. The morphological characterization and the crystal structures of the sodium titanate nanorods were investigated via scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS). Thin amorphous sodium titanate layers formed during the alkali-treatment, and sodium titanate nanorods were obtained after heat treatment at a temperature of 700°C. The sodium titanate nanorods obtained at this temperature had a thickness of about 80 nm and a length of 1 μm. The crystal structure of the sodium titanate was identified with the use of Na2Ti5O11. The nanorods were agglomerated at a temperature above 900°C, and large-scale nanorods formed on the Ti surface, which may be used for electrodes for energy conversion applications.

Large-Area Sodium Titanate Nanorods Formed On Titanium Surface Via NaOH Alkali Treatment

36%

Lee K. , Yoo D.