CN

范国华

Supervisor of Master's Candidates

E-Mail:

Discipline:Material Science

Paper Publications

Biomass-derived ferrous magnetic carbon-based nanocomposites from loofah collaterals for excellent electromagnetic wave-absorbing materials

Release time:2024-01-19 Hits:

Key Words:MICROWAVE-ABSORPTION PROPERTIES; BROAD-BAND; COMPOSITES; NANOFIBERS; MICROSTRUCTURE; FE/C

Abstract:High-performance wave-absorbing materials are always pursuing the goals of thin, lightweight, wide and strong absorption. Hitherto carbonaceous materials are still one kind of the most popular wave-absorbing materials. This work proposed a facile biomass-derivation route to prepare carbonaceous wave-absorbing materials. Loofah collaterals were impregnated with Fe(NO3)3 solution, and a process of iron-catalyzed carbonization for the dried precursors ensued, leading to the formation of Fe@Fe3C/C ternary nanocomposites. It's found that the Fe@Fe3C/ C nanocomposites possessed the absorption abilities from 13.0 to 18.0 GHz with the effective absorbing bandwidth almost covered the Ku band. The superior wave-absorbing properties were mainly ascribed to the synergism of dielectric and magnetic loss mechanisms. Meanwhile, the improved impedance matching and the elevated attenuation ability also favored the strong absorption at specific thickness. This work paved the way for the green synthesis and mass production of high-efficient wave-absorbing materials, and further inspired the regeneration of biomass waste for electromagnetic applications.

Volume:969

Issue:

Translation or Not:no

Click:times | The Founding Time:.. | The Last Update Time:..

Laoshan Campus-99 Songling Road, Qingdao City, Shandong Province
Sifang Campus-No.53 Zhengzhou Road, Qingdao City, Shandong Province
Sino-German International Cooperation Zone (Sino-German Campus)-No. 3698 Tuanjie Road, West Coast New District, Qingdao City, Shandong Province
Gaomi Campus-No. 1 Xingtan West Street, Gaomi City, Shandong Province
Jinan Campus-No. 80 Wenhua East Road, Jinan City, Shandong Province ©2015 Qingdao University of Science and Technology
Administrator email: master@qust.e