物理化学学报 >> 2007, Vol. 23 >> Issue (08): 1173-1177.doi: 10.3866/PKU.WHXB20070807

研究论文 上一篇    下一篇

水相一步合成锐钛矿型二氧化钛空心球

吴良专; 只金芳   

  1. 中国科学院理化技术研究所, 北京 100080; 中国科学院研究生院, 北京 100049
  • 收稿日期:2007-03-19 修回日期:2007-04-18 发布日期:2007-08-03
  • 通讯作者: 只金芳 E-mail:zhi-mail@mail.ipc.ac.cn

One-step Synthesis of Anatase-Crystalline Titania Hollow Spheres in Aqueous Solution

WU Liang-Zhuan; ZHI Jin-Fang   

  1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, P. R. China
  • Received:2007-03-19 Revised:2007-04-18 Published:2007-08-03
  • Contact: ZHI Jin-Fang E-mail:zhi-mail@mail.ipc.ac.cn

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摘要： 报道了水相一步直接合成晶体TiO2空心球的方法. 以水溶性的过氧化钛配合物(peroxo-titanium complex, PTC)为前驱体、聚苯乙烯(polystyrene, PS)球为模板, 在水溶液体系中可直接制备得到锐钛矿型纳米TiO2空心球. 与传统的模板法相比, 模板的包覆、去除及TiO2壳层的晶化等步骤在水相中可一步完成. 利用透射电子显微镜(TEM)、扫描电子显微镜(SEM)、X射线衍射仪(XRD)及热重分析仪(TGA)对所合成的纳米TiO2空心球进行了表征, 同时推断了可能的反应机理.

关键词: 空心球, 包覆, TiO2, 锐钛矿型

Abstract: A one-step procedure to fabricate anatase crystalline titania hollow spheres was reported. Anatase-crystalline titania hollow spheres were directly fabricated in aqueous solution with peroxo-titanium complex (PTC) as precursor and polystyrene (PS) spheres as template. Compared with the traditionally template method, the surface coating, the template removal and the crystallization of the titania shell were simultaneously finished in a one-step process. Transmission electron microscope (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA) were used to characterize the as-prepared titania hollowspheres. A possible formation mechanism was also discussed.

Key words: Hollow spheres, Coating, Titaniumdioxide, Anatase