碳基材料活化PMS降解新污染物研究进展

The Research Progress on Application of Carbon-Based Materials in Efficient Activation of PMS for Emerging Organic Pollutants Degradation

自然环境中新兴有机污染物(ECOs)的存在和去除引起广泛关注,如持续性有机污染物、抗生素、内分泌干扰物等对水生生物和人类产生存在潜在生态风险。过硫酸盐型高级氧化工艺因具有较强氧化降解污染物和选择去除特性,同时兼具广泛pH适应范围而受到广泛关注,而构建适宜的材料结构以实现过硫酸盐体系的高效活化是有效降解新污染物的关键。碳基材料因具有较丰富的官能团分布和结构稳定性,是高效活化过硫酸盐(PMS)的重要催化材料选择。本论文系统总结了可用于活化硫酸盐体系碳材料的结构特点及其活化机制,揭示了碳基材料活化PMS过程存在的自由基和非自由基途径,也对其在高活化效能和绿色环保应用方面的研究前景进行了展望。

The existence and removal of emerging organic pollutants(ECOs)in the natural environment have attracted widespread attention,e.g.,persistent organic pollutants,antibiotics,endocrine disruptors,etc.The ECOs have potential ecological risks to aquatic organisms and humans.The persulfate-based advanced oxidation process has attracted extensive attention due to its stronger oxidative degradation performance of pollutants and selective removal ability,as well as its wider pH adaptation range.The efficient activation of persulfate systems is the key to effectively degrading new pollutants,which could be achieved by constructing suitable material structures.The carbon-based catalytic material was considered as an important choice in the efficient activation of persulfate(PMS),due to its rich functional group distribution and structural stability.This paper systematically summarized the structural characteristics and activation mechanisms of the carbon materials that can be used to activate sulfate systems.The free radical and non-free radical pathways in the activation of PMS by carbon-based materials were revealed in the degradation of ECOs under an aqueous solution.This paper also predicted the application of carbon-based materials in the efficient activation and removal of pollutants in the future.