以网状铱钽钛涂层电极为阳极、石墨板为阴极，设计了一种在线生成 H2O2的电化学反应器，并研究了电 Fenton 试剂(电生 H2O2及Fe3+)助 TiO2可见光催化降解特丁津的情况。结果表明：电化学法在线生成 H2O2能助 TiO2可见光催化降解特丁津，反应180min 降解率近100%；而以Fe3+协同TiO2则显著加快反应速率，反应30min降解率达100%；特丁津的降解始于脱氯，然后脱特丁基、乙基、氨基；通过对反应体系的光谱分析显示，特丁津的降解涉及羟基自由基(·OH)及超氧自由基(·O2-)的产生与参与。%A electro-chemical reactor with H2O2 in-situ generation was designed, which using net structure Ir_Ta oxide coated Ti metal as anode, and platelike graphite as cathode, the degradation of terbuthylazine by TiO2 visible-light photocatalysis with electro-generated Fenton reagent (electrogenerated H2O2 and Fe3+) assiatance was also studied. Terbuthylazine could be degraded by TiO2 visible-light photocatalysis with electrogenerated H2O2 assiatance, and the degradation ratio could be 100%after 180 min reaction. Snergistic degradation of terbuthylazine was evidently fast when additionally adding Fe3+, its degradation ratio could be 100% after 30 min reaction. In the degradation process of terbuthylazine, dechlorination was first carried out, and tert-butyl, ethyl, amino groups were then oxidized. Spectrum analysis indicated that the reaction process was predominated by the hydroxyl free radical (·OH) and superoxide radical (·O2-) generation in the system.
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