基于碳基催化剂活化过二硫酸盐降解有机污染物的研究进展

碳基催化剂作为一种绿色催化材料，可以有效防止有毒金属离子的浸出和二次污染。本文首先对碳基催化剂活化过二硫酸盐（PDS）降解有机污染物存在的三种反应机制进行了具体的阐述，对自由基机制和非自由基机制的优缺点进行了对比和讨论，对使用不同碳基材料（包括活性炭、石墨烯、碳纳米管、中孔炭、纳米金刚石、生物炭）作为催化剂活化过二硫酸盐降解有机污染物的研究进展进行了梳理，比较了不同碳基催化剂对有机污染物的选择性和降解效果，并对各种碳基材料存在的问题进行了总结；然后探讨了碳基催化剂掺杂改性对催化活性的影响及其机理，针对碳基催化剂存在稳定性和重复利用性差的问题介绍了几种碳催化剂再生方法，最后对碳催化剂用于活化PDS降解实际有机废水的前景做出了展望。

Research progress in degradation of organic pollutants by activation of persulfates with carbon-based catalysts

As an eco-friendly catalytic material, carbon-based catalyst can effectively prevent undesirable leaching and secondary pollution of toxic metal ions. Three reaction mechanisms of carbon-based catalysts for activating persulfate (PDS) to degrade organic pollutants are elaborated and the advantages and disadvantages of the radical and nonradical mechanisms are compared and discussed in this review. The research process of using of different carbon materials, such as activated carbon, graphene, carbon nanotubes, mesoporous carbon, nano-diamonds, and biochar as the catalyst to activate persulfate to degrade organic pollutants are summarized. The selectivity and efficiency of different carbon-based materials for degradation of organic pollutants are compared and the problems of various carbon-based materials have also been briefly summarized. Then, the effects of doping modification on the catalytic activity are evaluated. For the weakness of poor stability and low reusability of carbon-catalyst, some regeneration methods are summarized in this paper. Finally,the prospects of carbon catalysts used to activate PDS to degrade organic contaminants in real wastewater are given.