In this work, Co₃O₄ embedded nitrogen and sulfur co-doped porous char (Co₃O₄@NSC) was prepared after one-pot pyrolysis of N, S in-rich rubber powder (RP) to determine the binding relationship between Co nanoparticles and multiple doped heteroatoms. Results indicated pyridinic N was more easily to coordinate with Co₃O₄ nanoparticles, forming the pyridinic N-Co binding in Co₃O₄@NSC, which was the dominant catalytic sites for peroxymonosulfate (PMS) activation. Paracetamol (PCM) degradation was greatly facilitated with Cl- surrounding in Co₃O₄@NSC/PMS system due to the formation of large amounts of HOCl generated from the direct reaction of Cl- with PMS. The Cl^↓ serving as a precursor of HOCl by reacting with PMS can be further strengthened by pyridinic N-Co bindings in Co₃O₄@NSC than the NSC. As a result, the pyridinic Co-N sites not only acted as the essential catalytic sites for PMS activation, but also accelerated the formation of HOCl at high level of Cl-.

在这项工作中，一锅热解富含N，S的橡胶粉（RP）后，制备了Co ₃ O ₄包埋的氮和硫​​共掺杂的多孔炭（Co ₃ O ₄ @NSC），以确定它们之间的结合关系。钴纳米粒子和多个掺杂的杂原子。结果表明，吡啶吡啶N更易于与Co ₃ O ₄纳米粒子配位，在Co ₃ O ₄ @NSC中形成吡啶吡啶N-Co结合，这是过氧单硫酸盐（PMS）活化的主要催化位点。Co ₃ O _4中的Cl-包围大大促进了扑热息痛（PCM）的降解@ NSC / PMS系统是由于Cl-与PMS的直接反应生成了大量的HOCl。与NSC相比 ，Co ₃ O ₄ @NSC中吡啶基N-Co结合可进一步增强通过与PMS反应而成为HOCl前体的Cl ^↓。结果，吡啶的Co-N位点不仅充当了PMS活化的基本催化位点，而且还加速了高Cl-含量下HOCl的形成。