Sodium percarbonate (2Na₂CO₃∙3H₂O₂) (PC) represents a promising alternative to H₂O₂ as PC is solid-phase, making it easier to handle; however iron (Fe) species are usually necessitated to activate PC for effectively producing hydroxyl radicals (HR) in degradation of toxicants. As homogeneous Fe species leads to severe issues of precipitation, heterogeneous iron oxide nanoparticles (NPs) seem promising but these NPs tend to aggregate in water. Thus, it is critical to develop supported iron oxide NPs. Since carbonaceous materials are one of the most useful supports, carbonaceous materials can be even fabricated into special morphologies to support iron oxide NPs. Herein, we propose to employ the electrospinning technique to develop carbon fiber (CF) as an advantageous carbon support because CF has a large aspect ratio (50:1) to allow iron oxide NPs well decorated on CF, forming a promising iron oxide NP-decorated CF (FeCF) for PC activation. FeCF is characterized using SEM, TEM, XRD, XPS, Raman spectroscopy and N₂ sorption isotherm. This FeCF can exhibit a noticeably higher catalytic reactivity than pristine Fe₂O₃ NPs for activating PC to generate HR, and then degrade a toxicant, Azorubin S (AZS). FeCF also exhibits a much lower activation energy (E_a) value of AZS degradation than other reported catalysts. Besides, FeCF could be also reusable to activate PC for degradation of AZS. Additionally, the degradation mechanism of AZS by FeCF-activated PC is also elucidated to provide insights into activation of PC and its environmental applications. These features prove that FeCF is an efficient heterogeneous catalyst to activate PC for degrading toxicants in aqueous solutions.

过碳酸钠（2Na ₂ CO ₃ ∙3H ₂ O ₂）（PC）代表了H ₂ O ₂的有前途的替代品由于PC是固相的，因此更易于处理；但是，通常需要铁（Fe）来激活PC，以有效地降解毒物而产生羟基自由基（HR）。由于均质的铁物种导致严重的沉淀问题，异质氧化铁纳米颗粒（NPs）似乎很有前途，但这些NPs倾向于在水中聚集。因此，开发负载型氧化铁纳米颗粒至关重要。由于碳质材料是最有用的载体之一，因此碳质材料甚至可以加工成特殊的形态来支撑氧化铁NP。本文中，我们建议采用静电纺丝技术开发碳纤维（CF）作为有利的碳载体，因为CF具有大的纵横比（50：1），可以在CF上很好地装饰氧化铁NP，形成用于PC活化的有前景的氧化铁NP修饰的CF（FeCF）。FeCF的特征是使用SEM，TEM，XRD，XPS，拉曼光谱和N₂吸附等温线。该FeCF与原始Fe ₂ O ₃ NPs相比，具有明显更高的催化反应活性，可激活PC产生HR，然后降解有毒物质Azorubin S（AZS）。FeCF还显示出比其他报道的催化剂低得多的AZS降解活化能（E _a）值。此外，FeCF还可以重新用于激活PC以降解AZS。此外，还阐明了FeCF活化的PC对AZS的降解机理，以提供有关PC活化及其环境应用的见解。这些特征证明，FeCF是有效的多相催化剂，可激活PC降解水溶液中的有毒物质。