Nanofibers with high specific surface area and chemical stability have broad prospects in the applications of adsorption. However, the adsorption capacity is limited by the scarcity of adsorption groups and storage space. Herein, the activated carbon-hybridized and amine-modified nanofibers are prepared by integrating activated carbon (AC) and polyacrylonitrile (PAN) via electrospinning method and the subsequent amination, which could provide additional storage space and adsorption groups for ultrahigh adsorption capability. Thus, the obtained aminerich porous PAN nanofibers (APAN/AC) readily realized the ultrahigh adsorption capacity for metal ions and dyes in wastewater. Specifically, the adsorption capacity of APAN/AC nanofibers were 284 mg·g⁻¹ for Cr(VI) and 248 mg·g⁻¹ for methyl orange, which were almost 2 and 4 times than that of amine-modified nanofibers (APAN) and carbon-hybridized nanofibers (PAN/AC), respectively. Moreover, the AC inhibited the chain mobility of polymer matrix and thereby endowing APAN/AC nanofibers with excellent recyclability. The adsorption capability retained 80% after nine adsorption-desorption cycles. The adsorption kinetics and corresponding mechanism were further explored. This strategy combines the advantages of polymer nanofibers and AC, opening a new avenue for developing next-generation absorbent materials.

具有高比表面积和化学稳定性的纳米纤维在吸附应用中具有广阔的前景。但是，吸附能力受到吸附基团和储存空间的缺乏的限制。在本文中，活性炭杂化和胺改性的纳米纤维是通过静电纺丝法将活性炭（AC）和聚丙烯腈（PAN）结合在一起并随后进行胺化而制备的，可以为超高吸附能力提供额外的存储空间和吸附基团。因此，所获得的富含胺的多孔PAN纳米纤维（APAN / AC）容易实现对废水中金属离子和染料的超高吸附能力。具体地，APAN / AC纳米纤维对Cr（VI）的吸附容量为284mg·g ^-1和248mg·g ^-1甲基橙的含量分别是胺改性纳米纤维（APAN）和碳杂化纳米纤维（PAN / AC）的2倍和4倍。此外，AC抑制了聚合物基质的链迁移性，从而使APAN / AC纳米纤维具有出色的可回收性。在九个吸附-解吸循环后，吸附能力保持80％。进一步研究了吸附动力学和相应的机理。该策略结合了聚合物纳米纤维和AC的优势，为开发下一代吸收性材料开辟了一条新途径。