通过拉曼光谱、X射线吸收精细结构和电子衍射表征揭示的钛酸盐纳米管/纳米带的结构特征

Structural features of titanate nanotubes/nanobelts revealed by Raman, X-ray absorption fine structure and electron diffraction characterizations.

作者信息

Ma Renzhi, Fukuda Katsutoshi, Sasaki Takayoshi, Osada Minoru, Bando Yoshio

机构信息

Soft Chemistry Group, Advanced Materials Laboratory and International Center for Young Scientists, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.

出版信息

J Phys Chem B. 2005 Apr 7;109(13):6210-4. doi: 10.1021/jp044282r.

DOI:10.1021/jp044282r

PMID:16851687

Abstract

High-purity nanotubes and nanobelts could be controllably obtained in hydrothermal treatments of anatase TiO(2) in concentrated NaOH solution depending on treating temperature and duration. Their structural features were studied employing X-ray diffraction, Raman, X-ray absorption fine structure, and electron diffraction characterizations. The results reveal that both the nanotubes and nanobelts might be of layered titanate structure. The similarity and difference among the nanotubes/nanobelts and other bulk titanates represented by trititanate H(2)Ti(3)O(7) and lepidocrocite-type H(0.7)Ti(1.825) square(0.175)O(4.0).H(2)O were also presented.

摘要

在浓氢氧化钠溶液中对锐钛矿型TiO₂进行水热处理时，根据处理温度和持续时间，可以可控地获得高纯度的纳米管和纳米带。采用X射线衍射、拉曼光谱、X射线吸收精细结构和电子衍射表征等手段对它们的结构特征进行了研究。结果表明，纳米管和纳米带可能都具有层状钛酸盐结构。还介绍了纳米管/纳米带与其他以三钛酸盐H₂Ti₃O₇和纤铁矿型H₀.₇Ti₁.₈₂₅□₀.₁₇₅O₄.₀·H₂O为代表的块状钛酸盐之间的异同。