The application of catalysts with highly available active sites, such as single-atom catalysts (SACs), is a growing trend in peroxysulfate activation for organic contaminant degradation. However, the single functional active site of SACs limits its performance in such reactions involving multiple steps or reactants. For this issue, a Fe-Co diatomic catalyst (FeCo-N-C) with multi-functional active sites is synthesized to abate bisphenol A (BPA) using peroxydisulfate (PDS) as an oxidant. X-ray Absorption Fine Structure (XAFS) measurement confirms the successful construction of diatomic Fe-N₄/Co-N₄ sites. The FeCo-N-C exhibits a higher normalized reaction rate (2.07 × 10⁵ min⁻¹ mol⁻¹) in BPA removal than previously reported SACs. Low-temperature electron paramagnetic resonance analysis reveals that Fe-N₄ and Co-N₄ process different intrinsic properties (spin states), which may lead to their diverse functions in the PDS activation process. The Co sites can significantly accelerate electron transfer and enhance the PDS adsorption abilities. As a complement, Fe sites perform better in the electrostatic interaction and destabilization of PDS. This study not only explains the synergy of multi-functional diatomic sites from the whole PDS activation process but provides a reliable reference for the elimination of emerging organic contaminants.

具有高度可用活性位点的催化剂（例如单原子催化剂（SAC））的应用是过氧硫酸盐活化用于有机污染物降解的增长趋势。然而，SAC 的单一功能活性位点限制了其在涉及多个步骤或反应物的反应中的性能。针对这个问题，我们合成了一种具有多功能活性位点的铁钴双原子催化剂（FeCo-NC），以过二硫酸盐（PDS）作为氧化剂来减少双酚A（BPA）。_{X射线吸收精细结构（XAFS）测量证实双原子Fe-N 4} /Co-N ₄位点的成功构建。FeCo-NC表现出更高的标准化反应速率（2.07 × 10 ⁵ min ^-1 mol ^-1）比之前报道的 SAC 的 BPA 去除率更高。低温电子顺磁共振分析表明，Fe-N ₄和Co-N ₄具有不同的固有性质（自旋态），这可能导致它们在PDS活化过程中发挥不同的功能。Co位点可以显着加速电子转移并增强PDS吸附能力。作为补充，Fe 位点在 PDS 的静电相互作用和去稳定方面表现更好。这项研究不仅解释了整个PDS活化过程中多功能双原子位点的协同作用，而且为消除新出现的有机污染物提供了可靠的参考。