研究报告
唐建军,邹原.TiO2-Fe3+可见光催化H2O2降解阿特拉津的协同效应[J].环境科学学报,2013,33(3):736-741
TiO2-Fe3+可见光催化H2O2降解阿特拉津的协同效应
- The synergistic effects of atrazine degradation with H2O2 photocatalyzed by TiO2-Fe3+ under visible irradiation
- 基金项目：广东省自然科学基金(No.2409K3080018);深圳市科技计划项目(No.07K164D0)
- 作者
- 单位
- 唐建军
- 1. 深圳职业技术学院 建筑与环境工程学院,深圳 518055;
2. 深圳市工业节水与城市污水资源化技术重点实验室,深圳 518055
- 邹原
- 深圳职业技术学院 建筑与环境工程学院,深圳 518055
- 摘要：以内分泌干扰物阿特拉津为模型污染物,研究了TiO2-Fe3+可见光催化H2O2降解阿特拉津的协同效应.结果表明,在H2O2存在条件下,金红石TiO2经可见光激发可持续稳定地产生·OH自由基,在Fe3+协同作用下,·OH自由基生成量急剧增加;TiO2能可见光催化H2O2降解阿特拉津,金红石TiO2显示出较锐钛矿TiO2及混晶TiO2(TiO2 P25)更高的催化活性,反应60 min,阿特拉津的降解率可达40%;以Fe3+协同TiO2可见光催化H2O2降解阿特拉津时,反应效率显著加快,反应5 min即对阿特拉津的降解率达到100%,而金红石TiO2显示出更为明显的协同效应.
- Abstract：The synergistic effects of atrazine degradation with H2O2 photocatalyzed by TiO2-Fe3+ were studied. The results indicated that ·OH radicals could be constantly produced by rutile TiO2 under visible irradiation with H2O2 addition, and the generation of ·OH radicals increased sharply with the synergistic addition of Fe3+. Atrazine could be degradated by TiO2 visible-light photocatalysis with H2O2 addition. Rutile TiO2 exhibited a better photocatalytic activity than anatase and mixed crystal TiO2(TiO2 P25), and its degradation ratio could be 40% after 60 minutes reaction. Synergistic degradation of atrazine with H2O2 photocatalyzed by TiO2-Fe3+ was evidently fast with complete degradation after 5 minutes reaction, and rutile TiO2 showed more evident synergistic effects.
- Key words：TiO2 Fe3+ visible light photocatalysis hydrogen peroxide synergistic effects hydroxyl free radical
摘要点击次数： 2008 全文下载次数： 2889
