In this work, we reported the preparation of nitrogen and FeS_x codoped porous carbon through hydrothermal treatment of FeCl₃, thiourea and porous carbon. The degradation results demonstrated that PC-FeS_x composite displayed high degradation efficiency towards organic dyes with excellent reusability. Moreover, the degradation efficiency under alkaline solution (pH = 11) is even better under acidic solution (pH = 3), indicating that other routes for generation free radicals were existed. Electron spin resonance (ESR) spin−trap technique was used to determine the free radical species and results demonstrated that both •OH and O₂⁻ are formed during Fenton reaction. Considered the facile operation procedure, low cost of reagents and high degradation efficiency, we believe this work should of broad interest for fabrication of multifunctional composites for environmental treatment.

在这项工作中，我们报道了通过FeCl ₃，硫脲和多孔碳的水热处理来制备氮和FeS _x共掺杂的多孔碳。降解结果表明，PC-FeS _x复合材料显示出对有机染料的高降解效率，并且具有出色的可重复使用性。此外，在碱性溶液（pH = 11）下的降解效率在酸性溶液（pH = 3）下甚至更好，表明存在其他产生自由基的途径。电子自旋共振（ESR）的自旋捕集技术被用于确定表现出的自由基物质和结果，这两个•OH和O ₂ ^-在芬顿反应过程中形成。考虑到操作程序简便，试剂成本低和降解效率高，我们认为这项工作对于制造用于环境处理的多功能复合材料应引起广泛兴趣。