(1. 深圳職業(yè)技術(shù)學院 建筑與環(huán)境工程學院，深圳 518055；
2. 深圳市工業(yè)節(jié)水與城市污水資源化技術(shù)重點實驗室，深圳 518055)
摘 要: 以金紅石型TiO2(TIO-R)、葡萄糖及FeC2O4為前驅(qū)物，在氬氣氣氛中煅燒制備Fe-C-TiO2催化劑，以內(nèi)分泌干擾物阿特拉津作模型污染物，研究Fe-C-TiO2可見光催化H2O2降解阿特拉津的光催化反應特性。結(jié)果表明，煅燒溫度影響Fe-C-TiO2的組成(碳包覆量和負載Fe的存在形式)及催化活性；673 K煅燒溫度下Fe-C-TiO2的碳包覆量約為2.5%，而負載Fe主要以高活性的α-Fe2O3形式存在；Fe-C-TiO2能在可見光下催化H2O2降解阿特拉津，反應45 min后，阿特拉津的降解率達99%，遠高于TIO-R的催化活性，負載Fe與TIO-R之間存在明顯的協(xié)同效應；反應體系的熒光光譜分析顯示，阿特拉津的降解涉及較單純羥基自由基(·OH)更為復雜的反應機理。
關(guān)鍵字: Fe-C-TiO2；阿特拉津；過氧化氫；羥基自由基；可見光催化
（1. School of Construction and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, China;
2. Shenzhen Key Laboratory of Industrial Water Conservation and Municipal Wastewater Resourc）
Abstract:Fe-C-TiO2 photocatalysts were prepared by calcination of rutile TiO2, glucose and FeC2O4 in argon atmosphere, and the photocatalytic properties of Fe-C-TiO2 with H2O2 photocatalysis were also studied by using atrazine as model pollutants. The results indicate that the calcination temperature has great effects on the constituent(carbon coating and existing form of Fe) and photoactivities of Fe-C-TiO2, the carbon coating of Fe-C-TiO2 calcined at 673 K is approximately 2.5%, and iron element is in the form of α-Fe2O3 which has high catalytic activity. Atrazine can be degraded with H2O2 photocatalyzed by Fe-C-TiO2 under visible irradiation, the degradation ratio reaches 99% after reaction for 45 min, and the degradation efficiency is evidently higher than that of the TIO-R. The fluorescence spectrum analysis indicates that the reaction process is not limited to the generation of hydroxyl free radical (·OH) in the system.
Key words: Fe-C-TiO2; atrazine; hydrogen peroxide; hydroxyl free radical; visible light photocatalysis
