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

Archives of Metallurgy and Materials

D. Yoo¹  K. Lee¹ 

[1] DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING, CHONNAM NATIONAL UNIVERSITY, GWANGJU, REPUBLIC OF KOREA

关键词: Keywords: Sodium titanate;    Nanorods;    Titanium;    Alkali treatment;    SEM;   

DOI  :  10.1515/amm-2015-0133

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

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.

【 授权许可】

Unknown