类芬顿法制备Co掺杂碳材料催化PMS降解苯酚

Degradation of Phenol by PMS Catalyzed by Co-Doped Carbon Materials Prepared by Fenton-Like Method

摘要: 用类芬顿法原位合成的聚苯胺作为碳前驱体，通过还原气体焙烧制备Co掺杂碳材料，进行扫描电镜和X射线衍射表征；将其作为活化剂研究催化PMS降解苯酚的效果；并探究影响降解苯酚效果的因素(如材料中Co的添加量，加入PMS的量和活化剂的量，以及体系初始pH值)，同时考察Co掺杂碳材料的循环使用性能；研究结果表明，当Co掺杂碳材料投加量为0.1 mmol，PMS与苯酚物质的量比值为30:1，溶液pH = 7.0时，30 min内能完全降解苯酚；循环实验表明Co掺杂碳材料重复使用5次时苯酚的降解率依旧可以达到90%。

Abstract: Polyaniline (PANI) synthesized by Fenton-like method in situ was used as a carbon precursor. Co-doped carbon materials were prepared by reducing gas roasting and characterized by scanning electron microscopy and X-ray diffraction. It was used as an activator to study the catalytic degradation of phenol by PMS. The factors affecting the degradation effect of phenol (such as the amount of Co in the material, the amount of PMS, the amount of activator, and the initial pH value of the system) were investigated, and the recycling performance of Co-doped carbon materials was also investigated. The results showed that phenol could be completely de-graded within 30 min when the dosage of Co-doped carbon material was 0.1 mmol, the ratio of PMS to phenol was 30:1, and the pH of solution was 7.0. The cyclic experiments showed that the degra-dation rate of phenol could still reach 90% when Co-doped carbon materials were reused for 5 times.