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化学进展 2014, Vol. 26 Issue (07): 1120-1131 DOI: 10.7536/PC140124 前一篇   后一篇

• 综述与评论 •

混晶TiO2光催化剂的制备及机理研究

解英娟1,2, 吴志娇1, 张晓3, 马佩军4, 朴玲钰*1   

  1. 1. 国家纳米科学中心 中国科学院纳米标准与检测重点实验室 北京 100190;
    2. 中国科学院大学 北京 100049;
    3. 北京交通大学理学院 北京 100044;
    4. 北京化工大学化学工程学院 北京 100029
  • 收稿日期:2014-01-01 修回日期:2014-04-01 出版日期:2014-07-15 发布日期:2014-05-22
  • 通讯作者: 朴玲钰 E-mail:piaoly@nanoctr.cn
  • 基金资助:

    科技部基础性工作专项（No.2011FY130104），科技部国家科技支撑计划项目（No.2011BAK15B05）和国家重点基础研究发展计划（973）项目（No.2011CB932802）资助

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Synthesis and Photocatalytic Mechanisms of the Mixed-Phase TiO2 Photocatalysts

Xie Yingjuan1,2, Wu Zhijiao1, Zhang Xiao3, Ma Peijun4, Piao Lingyu*1   

  1. 1. Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. School of Science, Beijing Jiaotong University, Beijing 100044, China;
    4. College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2014-01-01 Revised:2014-04-01 Online:2014-07-15 Published:2014-05-22
  • Supported by:

    The work was supported by the Ministry of Science and Technology of China (No. 2011FY130104), the National Science and Technology Pillar Program (No. 2011BAK15B05), and the National Basic Research Program of China (973 Program) (No. 2011CB932802)

本文总结了混晶TiO2光催化剂的各种制备方法，并将其分为两大类：一类是原位生成混晶，如水热法、溶剂热法、溶胶-凝胶法、微乳液-水热联用方法等；另一类是对两种晶型TiO2材料进行物理混合或对锐钛矿进行高温煅烧，如溶剂混合-煅烧法、高温煅烧法等。其中，后者操作简单易行、对设备要求不高，但获得的混晶TiO2易产生硬团聚，严重影响其光催化性能；在实际应用中前者制备的TiO2材料更具优势。同时，本文还对混晶TiO2光催化机理的研究历程进行了总结，并对其中存在的争议进行了评述。最后，展望了混晶TiO2光催化剂在环境和能源领域中的应用。

关键词： TiO2, 混晶, 混晶比, 光催化机理

This review summarizes the preparation methods of mixed-phase TiO2 photocatalysts. Two main lines of fabrication have been followed: one is preparation of mixed-phase TiO2 in situ (e. g. hydrothermal method, solvothermal method, sol-gel method and microemulsion-mediated hydrothermal method, etc.), and the other is physical mixing of different phases of TiO2 or calcinations under high temperature (e. g. solvent mixing and calcination treatment, calcination under high temperature, etc.). The latter has fewer requirements on the equipments, but the produced TiO2 nanoparticles tend to be aggregates, which affects the photocatalytic performance of TiO2 materials seriously. The former has more advantages in practical applications. At the same time, this review summarizes and remarks the researches on photocatalytic mechanisms of the mixed-phase TiO2. Furthermore, the applications of the mixed-phase TiO2 photocatalysts in environmental and energy fields are also prospected.

Contents
1 Introduction
2 Synthesis of the mixed-phase TiO2 photocatalysts
2.1 Phases of TiO2
2.2 Methods of preparing the mixed-phase TiO2 photocatalysts and their influencing factors
3 Mechanisms of the enhanced photocatalytic activities by the mixed-phase TiO2 photocatalysts
4 Conclusion and outlook

Key words: TiO2, mixed-phase, ratio of mixed-phase, photocatalytic mechanisms

中图分类号: 

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