高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (10): 1838.

• 论文 • 上一篇    下一篇

热处理对TiO2纳米管结构相变的影响

王保玉1,2, 郭新勇1, 张治军1, 赵彦保1, 金振声1   

  1. 1. 河南大学特种功能材料实验室, 开封 475001;
    2. 洛阳师范学院化学系, 洛阳 471022
  • 收稿日期:2002-05-22 出版日期:2003-10-24 发布日期:2003-10-24
  • 通讯作者: 张治军(1958年出生),男,教授,博士生导师,从事纳米材料研究.E-mail:lysywby@163.net E-mail:lysywby@163.net
  • 基金资助:

    国家自然科学基金(批准号:20071010)资助

Influence of Thermal Treatment on Structural Phase Transformation of TiO2Nanotubes

WANG Bao-Yu1,2, GUO Xin-Yong1, ZHANG Zhi-Jun1, ZHAO Yan-Bao1, JIN Zhen-Sheng1   

  1. 1. Laboratory of Lubricate and Function Material, Henan University, Kaifeng 475001, China;
    2. Luoyang Teachers College, Luoyang 471022, China
  • Received:2002-05-22 Online:2003-10-24 Published:2003-10-24

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摘要： TiO2纳米管为无定形结构,焙烧后则由无定形转变为锐钛矿型,纳米管的管状结构被破坏,晶型转变是TiO2纳米管的管状结构破坏的根本原因.经热处理,原来的TiO2纳米管部分转变为长棒状的金红石型晶柱结构,而原料TiO2在较大温度范围内焙烧均未出现长棒状晶柱结构;TiO2由A→R的相变温差很大,TiO2纳米管的A→R相变温度比原料约低350℃;合成的TiO2纳米管的比表面积和孔体积很大.

关键词: TiO2纳米管, 无机功能材料, 结构相变, 焙烧

Abstract: TiO2nanotubes can only exist in the amorphous state, and the tubulous structure of TiO2nanotubes is destroyed when the crystalline phase of TiO2calcined transforms from amorphous phase into anatase phase.The crystalline phase transformation is the fundamental reason why the tubulous phase strueture is destroyed.It was also found that the long-bar shape crystal columns in rutile were formed when TiO2nanotubes were calcined at 700-800 ℃, but the same case didn′t occur to the raw material how high no matter the temperature for calcining was.The temperatures of phase transformation of TiO2nanotubes from anatase to rutile is lower than that of the raw material calcined at about 350℃. TiO2nanotubes have a very large specific surface area and pole volume.

Key words: TiO2nanotube, Inorganic functional material, Structure phase transformation, Calcination

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