粉体および粉末冶金
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
研究速報
Effect of HCl Acid Treatment on the Microstructure of Titanate Nanotubes
Ryuhei YoshidaYoshikazu SuzukiSusumu Yoshikawa
著者情報
ジャーナル オープンアクセス

2006 年 53 巻 12 号 p. 943-946

詳細
抄録
Effect of HCl treatment on the hydrothermally prepared titanate nanotubes was studied. The pH and repeating times of acid treatment influenced both the microstructure and residual Na concentration of the titanate nanotubes. The lower pH and repeated acid treatment decreased residual Na ions in the titanate nanotubes, however, the acid treatment at much lower pH (pH 1) damaged the surface of nanotubes. The titanate nanotubes with almost no residual Na ions (i.e., less than the lower limit of detection by energy dispersive X-ray spectroscopy) can be obtained by hydrothermal method at 120°C for 72 h and H2O wash and subsequent HCl treatment at pH 2 for 3 times. The Na-free nanotubes (H2Ti3O7) were thermally unstable, and they changed into anatase particles at 500°C.
著者関連情報
© 2006 by Japan Society of Powder and Powder Metallurgy

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