物理化学学报2026，Vol.42Issue(11)：53-65,13.DOI:10.1016/j.actphy.2026.100306
TCF/Co@NC复合纳米纤维的可控制备及其微波吸收性能
Controllable construction and microwave absorption properties of TCF/Co@NC composite nanofibers
摘要
Abstract
Compositing magnetic nanoparticles onto one-dimensional(1D)porous carbon matrices is of significant research value.This strategy is essential for fabricating high-efficiency and functionally synergistic microwave absorbers.In this work,1D carbon materials are derived from tubular porous fibers via hyper-crosslinked polymerization.These materials serve as precursors to construct a series of composite fibers coated with Co/Zn metal-organic frameworks(C-CCNFs@Co/Zn-MOFs).The coating process is optimized,and the regulatory mechanism of Zn2+ions on MOF grain size is revealed.Subsequent carbonization yields magnetic nitrogen-doped carbon-encapsulated cobalt/tubular carbon nanofibers(TCF/Co@NC).The TCF/Co@NC possesses a porous core-shell architecture and 1D morphology with abundant hetero-interfaces.These features facilitate the establishment of conductive loss networks and multiple reflections,resulting in strong energy dissipation capabilities.By adjusting the Co/Zn molar ratio,the electromagnetic parameters of the composite fibers can be optimized,thereby modulating their microwave absorption performance.The as-prepared NCT-3(Co/Zn=1:1)achieves a minimum reflection loss(RLmin)of-55.5 dB at a thickness of 2.7 mm.Meanwhile,NCT-2(Co/Zn=3:1)exhibits an effective absorption bandwidth(EAB)of 7.3 GHz at 2.4 mm.This study provides a versatile and referable methodology for designing high-performance magnetic carbon-based microwave absorbing materials.关键词
超交联聚合物/管状纤维/金属有机框架/磁性材料/微波吸收剂Key words
Hyper-cross-linked polymers/Tubular fibers/Metal-organic frameworks(MOFs)/Magnetic materials/Microwave absorbers分类
化学化工引用本文复制引用
石章琳,修涛,毛新蒙,吴建锋,张宝亮..TCF/Co@NC复合纳米纤维的可控制备及其微波吸收性能[J].物理化学学报,2026,42(11):53-65,13.基金项目
本研究由国家自然科学基金(22375166) （22375166）
陕西省自然科学基础研究计划(2024JC-JCQN-44)及陕西省创新能力支撑计划-科技创新团队项目(2025RS-CXTD-024)资助 （2024JC-JCQN-44）
