物理化学学报 >> 2026, Vol. 42 >> Issue (11): 100417.doi: 10.1016/j.actphy.2026.100417

论文 上一篇    

回收造纸污泥制备低成本Ni改性碳/硅复合材料用于高效微波吸收

朱保顺1, 王薪琰1, 牟维鹏1, 孙轩鹏1, 王昱博1, 卫泓妤1, 石庞玉1, 郝惠兰1, 王大双4, 力国民2, 王桂振3   

  1. 1 山西科技学院材料科学与工程学院, 山西 晋城 048011;
    2 太原科技大学材料科学与工程学院, 山西 太原 030024;
    3 海南大学材料科学与工程学院精密仪器高等研究中心, 海南 海口 570228;
    4 湖北汽车工业学院汽车材料学院, 湖北 十堰 442002
  • 收稿日期:2026-06-09 修回日期:2026-08-22 录用日期:2026-08-31 发布日期:2026-09-29
  • 通讯作者: 朱保顺, 力国民, 王桂振 E-mail:zhubaoshun@sxist.edu.cn;ligm@tyust.edu.cn;wangguizhen@hainanu.edu.cn
  • 基金资助:
    本工作得到了山西省自然科学基金(202303021222293、202303021222290),国家自然科学基金(52572138)以及山西科技学院高层次人才科研启动基金(2023015)的资助。

Recycling paper mill sludge to prepare low-cost Ni-modified carbon/silica composite for efficient microwave absorption

Baoshun Zhu1, Xinyan Wang1, Weipeng Mu1, Xuanpeng Sun1, Yubo Wang1, Hongyu Wei1, Pangyu Shi1, Huilan Hao1, Dashuang Wang4, Guomin Li2, Guizhen Wang3   

  1. 1 School of Materials Science and Engineering, Shanxi Institute of Science and Technology, Jincheng 048011, Shanxi Province, China;
    2 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi Province, China;
    3 Center for Advanced Studies in Precision Instruments School of Material Science and Engineering, Hainan University, Haikou 570228, Hainan Province, China;
    4 School of Automotive Materials, Hubei University of Automotive Technology, Shiyan 442002, Hubei Province, China
  • Received:2026-06-09 Revised:2026-08-22 Accepted:2026-08-31 Published:2026-09-29
  • Contact: Baoshun Zhu, Guomin Li, Guizhen Wang E-mail:zhubaoshun@sxist.edu.cn;ligm@tyust.edu.cn;wangguizhen@hainanu.edu.cn

摘要: 生物质衍生的磁介电协同复合材料因其来源广泛、成本低廉和结构独特而在微波吸收领域受到广泛关注。本研究通过脱矿-浸渍-烧结工艺,成功制备了造纸污泥(PMS)衍生的Ni改性C/SiO2(Ni/C/SiO2)复合材料。通过调节烧结温度,优化了Ni颗粒分布以及多孔碳骨架与内部灰分SiO2的复合,增强了磁介电协同效应,实现了优异的阻抗匹配和电磁波衰减。特别是Ni/C/SiO2复合材料在700 ℃热处理温度下(NCS-700)表现出优异的微波吸收性能,在匹配厚度为2.0 mm时,有效吸收带宽(EAB)达到5.6 GHz,最小反射损耗(RLmin)为-39.2 dB。这种优异的性能源于多重损耗机制的协同增强,包括偶极子/界面极化弛豫、导电损耗和磁损耗。这项工作不仅为造纸污泥回收利用开辟了新前景,也为设计宽频段微波吸收剂提供了一条简单且经济高效的途径。

关键词: 造纸污泥, 微波吸收, 阻抗匹配, 界面极化, 固废利用

Abstract: Biomass-derived magnetic-dielectric synergistic composites have drawn extensive attention for microwave absorption (MA) due to their wide sources, low-cost, and unique structures. In this work, Ni-modified carbon/silica (Ni/C/SiO2) composites from paper mill sludge (PMS) were successfully synthesized using a combination of demineralization, impregnation, and sintering processes. By regulating the sintering temperature, the Ni particle distribution and the compositing of the porous carbon skeleton with SiO2 present in internal ash were optimized, enhancing the magnetic-dielectric synergy and yielding superior impedance matching and electromagnetic wave attenuation. In particular, Ni/C/SiO2 composite sintering at 700 ℃ (NCS-700) demonstrated excellent microwave absorption performance, achieving an effective absorption bandwidth (EAB) of 5.6 GHz and a minimum reflection loss (RLmin) of -39.2 dB at a matching thickness of 2.0 mm. This superior performance originates from the synergistic enhancement of multiple loss mechanisms, including dipole/interface polarization relaxation, conductive loss, and magnetic loss. This work not only opens up new prospects for PMS recycling but also provides a facile and cost-effective route to designing broadband microwave absorbers.

Key words: Paper mill sludge, Microwave absorption, Impedance matching, Interface polarization, Solid waste utilization