Activated carbon materials are moving away from traditional simple carbon-based porous materials to high-performance and functional materials. Thus, various attempts have been made to improve the performance and process efficiency of the emerging materials by doping with various heteroatoms, introducing functional nanoparticles, and modifying these materials using polymer chemistry. In this study, N and O heteroatom-doped activated carbon materials were prepared by using silk sericin, a by-product of the silk industry, as a raw material; magnetic nanoparticles were introduced into the heteroatom-doped activated carbon to prepare high-performance and easily separable adsorbent materials. N-doped activated carbon having a high surface area of 3289.1 m²g⁻¹ was prepared by a simple and one-step chemical activated sericin carbonization process without the generally required additional N-doping process. The subsequent introduction of magnetic nanoparticles (MNPs) not only facilitated the separation of nitrogen-rich bio-activated carbon from the contaminant solution, but also enhanced the capacity for adsorption of the anionic dye, methyl orange (MO; 869.57 mg g⁻¹), with a faster MO removal rate compared to that of N-doped activated carbon without MNPs. In addition, by simply varying the pH of the solution, effective adsorption-desorption-based recycling could be achieved. This MNP-containing N-rich activated carbon can be applied as a high-performance adsorbent for the remediation of wastewater streams as it affords excellent adsorption efficiency, a fast removal rate, and easy separation from aqueous solution.

活性炭材料正从传统的简单的基于碳的多孔材料转变为高性能和功能性材料。因此，已经进行了各种尝试以通过掺杂各种杂原子，引入功能性纳米颗粒并使用聚合物化学来修饰这些材料来改善新兴材料的性能和工艺效率。在这项研究中，N和O杂原子掺杂的活性炭材料是用丝绸丝胶（丝绸工业的副产品）作为原料制备的。将磁性纳米颗粒引入杂原子掺杂的活性炭中，以制备高性能且易于分离的吸附材料。高表面积3289.1 m ² g ^-1的N掺杂活性炭通过简单且一步一步的化学活化的丝胶蛋白碳化过程制备了硅，无需通常需要的其他氮掺杂过程。随后引入的磁性纳米颗粒（MNP）不仅促进了富氮生物活性炭从污染物溶液中的分离，而且还增强了阴离子染料甲基橙（MO; 869.57 mg g ^-1），与不含MNP的N掺杂活性炭相比，具有更快的MO去除率。另外，通过简单地改变溶液的pH，可以实现有效的基于吸附-解吸的再循环。这种含MNP的富N活性炭可以用作污水流的高效吸附剂，因为它具有出色的吸附效率，快速的去除速率，并且易于从水溶液中分离。