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| Lignin-based Electrospun Magnetic Carbon Nanofibers and Their Application for Electromagnetic Shielding |
| Received:October 31, 2023 |
| DOI：10.11980/j.issn.0254-508X.2024.02.002 |
| Key Words:electrospinning lignin carbonization carbon nanofiber electromagnetic shielding |
| Fund Project:国家自然科学基金面上项目（22178206）；宜宾市科技局“揭榜挂帅”项目（2022JB011）；生物基材料与绿色造纸国家重点实验室开放基金（GZKF202025）。 |
| Author Name | Affiliation | Postcode | | ZHOU Bingxu | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology,Xi’an, Shaanxi Province, 710021 | 710021 | | DUAN Chao* | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology,Xi’an, Shaanxi Province, 710021
Yibin Grace Group Co., Ltd., Yibin, Sichuan Province, 644000
State Key Lab of Bio-based Materials and Green Papermaking, Qilu University of Technolog （Shandong Academy of Sciences）, Ji’nan, Shandong Province, 250353 | 250353 | | TIAN Guodong | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology,Xi’an, Shaanxi Province, 710021 | 710021 | | ZHOU Linlin | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology,Xi’an, Shaanxi Province, 710021 | 710021 | | XIE Zengying | Yibin Grace Group Co., Ltd., Yibin, Sichuan Province, 644000 | 644000 | | WANG Qiang* | State Key Lab of Bio-based Materials and Green Papermaking, Qilu University of Technolog （Shandong Academy of Sciences）, Ji’nan, Shandong Province, 250353 | 250353 |
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| Abstract:In this study， the alkali lignin （AL） and polyacrylonitrile （PAN） were used as raw materials to prepare lignin-based magnetic carbon nanofibers （FeNi@LCNF） with great electromagnetic shielding effectiveness （EMI SE）， and its preparation process consisted of pre-doping of Fe and Ni precursors， electrospinning， and carbonization processes. The results showed that when the AL dosage was 50%， the electrospun fiber was optimal. When the FeNi loading capacity was 17.3%， the as-prepared FeNi@LCNF-2 exhibited high electrical conductivity and ferromagnetism. In addition， under the catalysis of Fe and Ni elements， numerous “thorn-like” carbon nanotubes in-situ grew on the surfaces of the carbon nanofibers， which further promoted the formation of porous conductive network and heterostructure of the carbon fiber material， thus endowed high conductivity （8.11 S/cm） of FeNi@LCNF-2 and 38 dB of EMI SE in the X-band. |
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