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化学进展 2008, Vol. 20 Issue (01): 19-25 前一篇   后一篇

• 综述与评论 •

纳米TiO2固相光催化降解固体废弃塑料*

法文君 昝菱** 龚楚清 钟家柽   

  1. （武汉大学化学与分子科学学院 武汉 430072）
  • 收稿日期:2007-02-25 修回日期:2007-03-29 出版日期:2008-01-24 发布日期:2008-01-24
  • 通讯作者: 昝菱
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Solid-phase Photocatalytic Degradation of Plastic with TiO2 as Photocatalyst

Fa Wenjun; Zan Ling**; Gong Chuqing; Zhong Jiacheng   

  1. (College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China)
  • Received:2007-02-25 Revised:2007-03-29 Online:2008-01-24 Published:2008-01-24
  • Contact: Zan Ling
以纳米TiO2作光催化剂，制备出环境友好的可光催化降解的纳米复合塑料是解决“白色污染”行之有效的方法之一。本文综述了近年来纳米TiO2固相光催化降解固体废弃塑料的研究进展，探讨了TiO2-聚合物复合膜的固相光催化反应机理及光催化降解情况，从对纳米TiO2表面改性以改善其在聚合物中的分散性，对纳米TiO2进行修饰处理以提高其对可见光的吸收，从而提高其光催化效率等方面探讨了可光降解塑料研究存在的问题及应用前景。
关键词： 纳米TiO2, 可光降解塑料, 分散性, 可见光响应
The latest research progress in solid-phase photocatalytic degradation of plastic with TiO2 as photocatalyst is reviewed. Solid-phase photocatalytic degradation of the TiO2-polymer composite films was also investigated and analyzed. Some new methods such as modifying TiO2 by branched macromolecules were used to solve the dispersion of TiO2 in polymer. Modifying TiO2 by dye sensitizing or ion-doping was used to broaden the region of photo-response and enhance the visible light activity. The problems about the preparation and degradation of the TiO2-polymer composite films were discussed. The TiO2-polymer composites provide a promising way to solve the white pollution problem.
Key words: nano-TiO2, photodegradable plastics, dispersion, visible light response

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