目前臭氧催化氧化技术的研究热点主要集中在新型催化材料设计制备和污染物降解效能提升等方向，但尚未解决臭氧在不同催化材料表面上分解为何表现为多种路径且生成不同活性物种这一科学问题。本项目通过建立一系列稳定可控的钛铁矿相表面作为研究手段，以“构建稳定可控表面→调控表面特征→探究变量特征对臭氧分解途径的影响→考察臭氧分解途径对典型污染物降解的影响→明确臭氧分解不同途径产生的规律”为研究思路，用多种表面表征技术、活性物种检测手段及原位表面反应解析技术探究臭氧在钛铁矿相催化材料表面分解生成不同活性物种的机理来源，阐明臭氧在催化材料表面分解不同途径的产生规律，考察几类不同污水中典型污染物及水质特征对臭氧在催化材料表面分解行为的影响，明确实际污水特性与臭氧催化材料选择之间的关系，最终为臭氧催化氧化技术中催化材料的设计制备及应对复杂水质情况下催化材料的选择应用提供方法论和实验依据。

Recent studies of catalytic ozonation technologies have been focused on design and preparation of new catalytic materials and enhancement of pollutant degradation efficiencies. However, the cause of formation of different active species by ozone decomposition on the surface of catalysts has not been solved yet. In this project, we try to build series of stable and controllable ilmenite surfaces as research tools and the research approach is as follows: building stable and controllable catalyst surfaces, regulating characteristics of surfaces, investigating the influence of changing characteristics on ozone decomposition pathways, identifying the effect of ozone decomposition on the degradation of characteristic pollutants and finally clarifying the key mechanism of different ozone decomposition pathways. The mechanisms of various active species generation and different ozone decomposition pathways on the surfaces of catalysts are illustrated by various surface characterizations, active species detection methods and in-situ surface reaction analytical techniques. The influences of several typical pollutants and water matrix in wastewater on the decomposition behavior of ozone on surfaces of catalysts are also investigated. The relationship between the actual wastewater characteristics and the selection of ozonation catalysts is also clarified. The target of this project is offering methodology and experimental basis for researchers to get access to catalysts design and preparation, and to deal with the complex water matrix during the application of catalytic ozonation technologies.