High-efficiency and cost-effective catalysts with available strategies for persulfate (PS) activation are critical for the complete mineralization of organic contaminants in the environmental remediation and protection fields. A nanoscale zero-valent iron-embedded modified mesoporous carbon (MCNZVI) with a core-shell structure is synthesized using the hydrothermal synthesis method and high-temperature pyrolysis. The results showed that nZVI could be impregnated within mesoporous carbon frameworks with a comparatively high graphitization degree, rich nitrogen doping content, and a large surface area and pore volume. This material was used as a persulfate activator for the oxidation removal of Reactive Black 5 (RB5). The effects of the material dosage, PS concentration, pH, and some inorganic anions (i.e., Cl⁻, SO₄²⁻) on RB5 degradation were then investigated. The highest degradation efficiency (97.3%) of RB5 was achieved via PS (20 mmol/L) activation by the MCNZVI (0.5 g/L). The pseudo-first-order kinetics (k = 2.11 × 10⁻² min⁻¹) in the MCNZVI/PS (0.5 g/L, 20 mmol/L) was greater than 100 times than that in the MCNZVI and PS. The reactive oxygen species (ROS), including ¹O₂, SO₄^·−, HO., and ·O₂⁻, were generated by PS activation with the MCNZVI. Singlet oxygen was demonstrated to be the primary ROS responsible for the RB5 degradation. The MCNZVI could be reused and regenerated for recycling. This work provides new insights into PS activation to remove organic contamination.

高效且具有成本效益的催化剂以及可用的过硫酸盐（PS）活化策略对于在环境修复和保护领域中有机污染物的完全矿化至关重要。利用水热合成法和高温热解法合成了具有核-壳结构的纳米零价铁包埋改性介孔碳（MCNZVI）。结果表明，nZVI可以浸渍在介孔碳骨架中，具有较高的石墨化度，丰富的氮掺杂含量，较大的表面积和孔体积。该材料用作过硫酸盐活化剂，用于氧化去除活性黑5（RB5）。材料用量，PS浓度，pH，以及一些无机阴离子的效应（即，氯^-然后研究了SO ₄ ²⁻）对RB5降解的影响。RB5的最高降解效率（97.3％）是通过MCNZVI（0.5 g / L）活化PS（20 mmol / L）实现的。MCNZVI / PS（0.5 g / L，20 mmol / L）中的拟一级动力学（k = 2.11×10 ^-2 min ^-1）比MCNZVI / PS中的拟一级动力学大100倍。活性氧物质（ROS），包括¹ Ò ₂，SO ₄ ^{· -}，HO，和·O2。₂ ^-通过MCNZVI的PS激活生成。单重态氧被证明是负责RB5降解的主要ROS。MCNZVI可以重复使用并再生以进行回收。这项工作为PS活化去除有机污染物提供了新见解。