Even though Co₃O₄ is the most conventional heterogeneous catalyst for activating peroxymonosulfate (PMS), Co₃O₄ nanoparticles (NPs) aggregate severely, especially in water, losing their catalytic activities. In the present study, an electrospinning technique is employed to prepare Co₃O₄ nanofiber (CONF), in which severe aggregation of Co₃O₄ NPs can be prevented as Co₃O₄ NPs are specifically configured into fibers, rendering a much higher surface area and porosity than conventional Co₃O₄ NPs. When decolorization of Acid Red 27 (AR) is employed as a model test for PMS activation, CONF exhibits considerably higher catalytic activities than the commercial Co₃O₄ NPs for activating PMS to decolorize AR completely in 15 min with a rate constant of 0.210 min⁻¹. The E_a of AR decolorization by CONF-activated PMS is 43.5 kJ/mol, which is also lower than several reported studies. CONF can be also re-used to activate PMS over multiple cycles. AR degradation is confirmed to involve with sulfate radicals via examining effects of radical scavengers and Electron Paramagnetic Resonance analysis. The findings obtained in this study successfully demonstrate that the electrospinning technique can be utilized to prepare nanoscale fibrous Co₃O₄ with improved physical and chemical properties for catalytic advanced oxidation applications.

尽管Co ₃ O ₄是激活过氧单硫酸盐（PMS）的最常规的非均相催化剂，但Co ₃ O ₄纳米颗粒（NPs）严重聚集，特别是在水中，失去了催化活性。在本研究中，静电纺丝技术是用来制备钴₃ ö ₄纳米纤维（CONF），其中钴的严重聚合₃ ö _4周的NP可以防止以Co ₃ ö ₄的NP被专门配置成纤维，呈现高得多的表面积和孔隙率比传统的Co ₃ O ₄NP。当使用酸性红27（AR）脱色作为PMS活化的模型测试时，CONF的催化活性要比商用Co ₃ O ₄ NPs高得多，在15分钟内活化PMS使其完全脱色，速率常数为0.210分钟^-1。该Ë_一CONF活化的PMS对AR脱色的结果为43.5 kJ / mol，也低于几项报道的研究。CONF还可以在多个周期内重新用于激活PMS。通过检查自由基清除剂的作用和电子顺磁共振分析，可以确定AR降解与硫酸根有关。在这项研究中获得的发现成功地证明了电纺丝技术可用于制备具有改善的物理和化学性质的纳米级纤维状Co ₃ O ₄，用于催化高级氧化应用。