纳米 TiO2光催化技术及其在降解汽车尾气中的应用

摘要

介绍了纳米TiO2光催化技术及其降解汽车尾气的机理；总结了自降解汽车尾气路面的制备工艺,汽车尾气测试评价系统的研究现状,分析了汽车尾气降解效率及其主要影响因素；综述了纳米TiO2基路面的基本性能及其自降解汽车尾气路面的应用现状；分析了纳米TiO2基路面存在的一些问题和发展的趋势,并且指出了需进一步研究的方向.%Firstly, photocatalysis technology of nano-TiO2 and its mechanism that degrades automobile exhaust are introduced. Secondly, the preparation technology of this road materials that nano-TiO2 immobilized on and research status of the evaluation system used in testing automobile emissions are summed up . At the same time , its degradation efficiency and main influence factors are analyzed . Thirdly, the basic performance and application status about road loading nano-TiO2 are given. At last, the problems existing in the technologies of nano-TiO2 in photodegradation of automobile exhaust are analyzed and the direction of further research is suggested.