PDF(Pubmed)
Abstract：
The activation of PMS to produce active species is an attractive technique for antibiotic degradation but is restricted to the low reaction kinetics and high costs. In this work, a cobalt-based catalyst was prepared by in situ electrodeposition to enhance the electrically activated PMS process for the degradation of antibiotics. Almost 100% of pefloxacin (PFX) was removed within 10 min by employing Co(OH)2 as the catalyst in the electrically activated peroxymonosulfate (PMS) process, and the reaction kinetic constant reached 0.52 min-1. The redox processes of Co2+ and Co3+ in Co(OH)2 catalysts were considered to be the main pathways for PMS activation, in which 1O2 was the main active species. Furthermore, this strategy could also achieve excellent degradation efficiency for other organic pollutants. This study provides an effective and low-cost strategy with no secondary pollution for pollutant degradation.
摘要：
活化PMS以产生活性物质是抗生素降解的有吸引力的技术,但受限于低反应动力学和高成本。在这项工作中,通过原位电沉积制备了钴基催化剂，以增强电激活的PMS降解抗生素的过程。在电活化的过氧单硫酸盐（PMS）工艺中，通过使用Co（OH）2作为催化剂，在10分钟内除去了几乎100％的培氟沙星（PFX），反应动力学常数达到0.52min-1。Co（OH）2催化剂中Co2和Co3的氧化还原过程被认为是PMS活化的主要途径。其中1O2是主要的活性物种。此外，该策略还可以实现对其他有机污染物的优异降解效率。该研究为污染物降解提供了一种有效且低成本的无二次污染策略。
