化学学报 ›› 2011, Vol. 69 ›› Issue (09): 1087-1092. 上一篇    下一篇

研究论文

空心微球表面定向生长TiO2纳米棒及其光催化性能研究

赵立薇1,何溥1,杜鑫1,2,贺军辉*,1   

  1. (1中国科学院理化技术研究所功能纳米材料实验室 北京100190)
    (2中国科学院研究生院 北京 100049)
  • 收稿日期:2010-09-01 修回日期:2010-11-25 出版日期:2011-05-14 发布日期:2010-12-28
  • 通讯作者: 贺军辉 E-mail:jhhe@mail.ipc.ac.cn
  • 基金资助:

    国家自然科学基金委员会—中国工程物理研究院联合基金;国家自然科学基金

Growth of Titania Nanorods on the Surface of Hollow Glass Microspheres and Their Photocatalytic Property

Zhao Liwei1 He Pu1 Du Xin1,2 He Junhui*,1,   

  1. (1 Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (2 Graduate University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2010-09-01 Revised:2010-11-25 Online:2011-05-14 Published:2010-12-28
  • Contact: Junhui He E-mail:jhhe@mail.ipc.ac.cn

通过表面溶胶-凝胶处理和水热反应成功制备出包覆有二氧化钛纳米棒的复合空心微球. 用扫描电子显微镜(SEM)和X射线衍射仪(XRD)等表征了所得产品, 探索了水热反应时间、煅烧时间对产物形貌和结构的调控作用, 并对产物光催化降解亚甲基蓝进行了研究. 结果表明, 所制备的表面包覆有二氧化钛纳米棒的复合空心微球在紫外光照射下可将亚甲基蓝完全降解. 该材料质轻, 可浮于水面, 有望成为一种新型光催化剂, 应用于治理水体表面的大面积污染.

关键词: 表面溶胶-凝胶法, 水热合成, 二氧化钛, 空心微球, 光催化

Titania nanorods coated composite hollow microspheres were successfully prepared through the surface sol-gel process followed by hydrothermal reaction. The obtained products were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), etc. The effects of hydrothermal reaction time and calcination time were explored on the morphology and structure of product. The photocatalytic properties of the products were also studied toward the degradation of methylene blue. Experimental results showed that the prepared titania nanorods coated composite hollow microspheres could completely degrade methylene blue under UV irradiation. These materials are light-weighted, and can float on water surface. They are expected to become a new type of photocatalyst that holds promise in abatement of organic pollutants on large-area surface waters.

Key words: surface sol-gel process, hydrothermal synthesis, titania, hollow microsphere, photocatalysis