College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China.
College of Environment Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China.
Chemosphere. 2022 Jul;299:134437. doi: 10.1016/j.chemosphere.2022.134437. Epub 2022 Mar 31.
Ciprofloxacin (CIP) as an anti-inflammatory drug is frequently detected in various water resources. Recently, Sulfate Radical-based advanced oxidation processes with manganese oxides have been recognized as a highly effective method for CIP degradation. Herein, ε-MnO was obtained through a convenient drying process. After different atmospheric treatments, MnO and MnO were fabricated for subsequent degradation experiments. The results show that MnO exhibits better catalytic activity than MnO, with high removal efficiency of almost 84.3% for CIP. Quenching test and electron paramagnetic resonance spectra confirm that O is the dominant species during reaction, while ·OH and SO play a supporting role. A related discussion about the role of valence states of Mn and oxygen vacancies is presented, which can provide a theoretical basis for further development of Mn/peroxymonosulfate system.
环丙沙星（CIP）作为一种抗炎药物，经常在各种水源中被检测到。最近，基于硫酸根自由基的锰氧化物高级氧化过程已被认为是一种高效降解 CIP 的方法。本文通过简便的干燥工艺得到了 ε-MnO。经过不同的大气处理，制备了 MnO 和 MnO 用于后续的降解实验。结果表明，MnO 表现出比 MnO 更好的催化活性，对 CIP 的去除率高达近 84.3%。淬灭实验和电子顺磁共振谱证实，在反应过程中起主要作用的是 O，而·OH 和 SO 则起辅助作用。本文还对 Mn 的价态和氧空位的作用进行了相关讨论，为进一步开发 Mn/过一硫酸盐体系提供了理论依据。
