CuO / 过硫酸氢钾体系催化氧化苯酚简

本论文通过直接沉淀法制备了CuO催化剂，结合过硫酸氢钾，在常温常压下催化氧化处理苯酚模拟废水。采用电子显微镜（SEM）、X射线粉末衍射（XRD）对催化剂进行了表征，并研究了反应过程中各影响因素对降解效率的影响。实验结果表明，在催化剂用量为0.2 g/L，氧化剂浓度为0.25 g/L，pH值为7，反应时间为60 min的条件下，浓度为50 mg/L的苯酚降解率可达100%，TOC去除率达84%。进一步实验表明，催化剂具有良好的重复使用能力。最后，通过自由基捕捉实验，考察了体系中的自由基种类，并根据实验结果，讨论了CuO/过硫酸氢钾体系的催化降解机理。

Catalytic oxidation of phenol by CuO/peroxymonosulfate system

CuO particles were synthesized by direct precipitation method and were used to activate peroxymonosulfate (PMS) for catalytic oxidation of phenol at ambient conditions. The catalyst was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The effects of several parameters on the degradation efficiency of the process were investigated. The results show that 100% decomposition and 84% TOC removal of phenol (50 mg/L) could be achieved within 60 min under the optimum conditions (initial PMS concentration of 0.25 g/L, catalysts dosage of 0.2 g/L, and initial solution pH 7). Moreover, the catalyst was demonstrated to have good reusability. Radical quenching studies were conducted to classify the type of active radicals present in the reaction. Based on the results, a reasonable mechanism was investigated to interpret the catalytic degradation process.