文献类型：期刊文献

英文题名：Oxygen and nitrogen co-doped mesoporous carbon derived from COFs for efficient degradation of levofloxacin via peroxymonosulfate activation

作者：Zhang, Xinxi[1,2];Cao, Min[1,2];Liu, Da[1,2];Lei, Juying[1,2,3];Zhang, Jinlong[4,5];Liu, Yongdi[1,2];Zhou, Liang[1,2,3]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：49

期号：7

起止页码：2793

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;EI(收录号：20232114122672);WOS:【SCI-EXPANDED(收录号:WOS:000992705900001)】；

基金：This study was supported by National Natural Science Foundation of China (22006038, 22076046), and Fundamental Research Funds for the Central Universities (JKB01221619)

语种：英文

外文关键词：Covalent organic frameworks; Peroxymonosulfate activation; Reactive oxygen species; Metal-free carbon materials

摘要：Advanced oxidation processes based on peroxymonosulfate (PMS) activation are widely used for the removal of antibiotic contaminants. However, the commonly used transition metal catalysts suffer from secondary contamination due to ions leaching during the activation of PMS. Herein, the oxygen and nitrogen co-doped carbon material (Nv-NC-2) with abundant mesopores was obtained by simple hightemperature calcination using covalent organic frameworks (COFs) as precursors and -NH4Cl as an activator. The Nv-NC-2/PMS system exhibited excellent levofloxacin removal efficiency under a wide pH and complex water environment with anions interference. The C=O in Nv-NC-2 was identified as the main active sites through degradation experiments and XPS. Furthermore, the electron paramagnetic resonance, quenching experiments and probe capture experiments demonstrated O-1(2) and O-2(-) were dominant active species. This study enhances the catalytic activity of COFs-derived carbon materials through a simple activation technique, which provides a novel method for surface modification of carbon materials.