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huo xing tan xian wei fu zai na mi la-s/tio2 guang cui hua jiang jie ben fen de yan jiu
Author(s): 
Pages: 1-3,7
Year: Issue:  4
Journal: Environmental Protection and Technology

Keyword:  光催化活性炭纤维复合光催化剂苯酚降解机理;
Abstract: 采用浸涂-焙烧法合成了活性炭纤维负载纳米La-S/TiO2复合光催化剂,并用扫描电子显微镜(SEM)对其表面形貌和结构变化进行了表征分析.在λ>400nm的可见光光照下,考察了其对苯酚溶液的光催化降解能力.结果表明:负载型La-S/TiO2复合光催化剂比纳米La-S/TiO2光催化剂对苯酚具有更强的降解能力,苯酚的降解是在自由基的作用下进行的,经历了先形成不稳定的活性中间体,然后直接开环降解成脂肪酸等低分子量的化合物,接着被深度氧化的过程.
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