Abstract: The Cu/Fe catalyst was prepared by displacement method and characterized by X⁃ray diffraction (XRD). The degradation effect of Orange II by persulfate (PS) catalyzed by Cu/Fe and its influence factors were investigated, and the mechanism of degradation was also investigated. The experimental results show that Cu/Fe can catalyze PS to degradate Orange II wastewater successfully, and its catalytic effect is better than that of zero⁃valent iron. When pH=3, the mass concentration of PS is 2.0 g/L, the quality of Cu/Fe catalyst at a concentration of 0.250 g/L, the degradation rate of Orange II is up to 99%. The t⁃butanol and methanol are used as radical scavengers to confirmed that the active radicals in the process of degradation are SO〖_4^-〗· and ·OH.

Key words: Persulfate, Cu/Fe catalyst, Orange II

摘要： 采用置换法制备Cu/Fe催化剂，并通过X射线衍射（XRD）对其进行表征。考察了Cu/Fe催化过硫酸钠（PS）降解金橙Ⅱ的效果及其影响因素，并对降解反应机理进行探究。结果表明，Cu/Fe能够催化PS降解金橙Ⅱ废水，并且其催化效果优于零价铁，其中当pH=3、PS的质量浓度为2.0 g/L、Cu/Fe催化剂的质量浓度为0.250 g/L时，金橙Ⅱ的降解率为99%。利用叔丁醇和甲醇作为自由基捕获剂，证实了降解反应中起到氧化作用的活性自由基为SO〖_4^-〗·和·OH。

关键词: 过硫酸盐, Cu/Fe催化剂, 金橙Ⅱ