Heterogeneous catalysts for persulfate activation were synthesized using ferrocene and carbon nanofiber as precursor by one-pot hydrothermal method and their performances of catalysts for persulfate activation were evaluated via ibuprofen degradation efficiencies. The structure of the catalyst was identified as carbon encapsulated Fe₃O₄ grafted on carbon nanofibers (Fe₃O₄@C/CNFs) by multiple characterization methods. The CNF supporter could greatly reduce the magnetization of Fe₃O₄ and increase the coercivity, which effectively avoided agglomeration. The specific surface area of the Fe₃O₄@C/CNFs was determined as 65.36 m²/g. The Fe₃O₄@C/CNFs exhibited high catalytic performances for persulfate activation and ibuprofen could be completely removed in the system with an activation energy of 23.51 kJ/mol. The degradation efficiencies increased with the Fe loading, catalyst dosage and persulfate concentration. The catalysts also showed stable activity with minimal metal leaking over five cycles. Hydroxyl and sulfate radicals were verified by spin-trapping and scavenger experiments and principally contributed to ibuprofen degradation. The possible ibuprofen degradation pathways were elucidated based on intermediate analysis. This work would promote the applications of sulfate radical based advanced oxidation processes for the environmental remediation.

一锅水热法以二茂铁和碳纳米纤维为前驱体合成了过硫酸盐活化的非均相催化剂，并通过布洛芬的降解效率评价了过硫酸盐活化的催化剂的性能。通过多种表征方法将催化剂的结构鉴定为接枝在碳纳米纤维（Fe ₃ O ₄ @ C / CNFs）上的碳包埋的Fe ₃ O ₄。CNF载体可以大大降低Fe ₃ O ₄的磁化强度，提高矫顽力，有效避免了团聚。Fe ₃ O ₄ @ C / CNFs的比表面积确定为65.36 m² /克。Fe ₃ O ₄ @ C / CNFs对过硫酸盐的活化表现出很高的催化性能，布洛芬可以在系统中以23.51 kJ / mol的活化能被完全除去。降解效率随铁含量，催化剂用量和过硫酸盐浓度的增加而增加。催化剂还显示出稳定的活性，在五个循环中金属泄漏最少。通过自旋捕获和清除剂实验验证了羟基和硫酸根基团，其主要有助于布洛芬的降解。基于中间分析，阐明了可能的布洛芬降解途径。这项工作将促进基于硫酸根自由基的高级氧化工艺在环境修复中的应用。