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Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Reed root-derived hierarchical porous carbon via one-step activation-carbonization for high-performance
Lunwu Wang1, Fang Ren1, Zhengzheng Guo1
1The Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, China.
Bioresource Technology
|July 25, 2026
Summary
Reed roots are transformed into advanced porous carbon absorbers for microwave absorption. These green materials offer excellent performance, demonstrating potential for sustainable electronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Biomass-derived porous carbons show promise for microwave absorption.
- Limited pore structures often hinder optimal performance.
- Developing advanced porous carbon architectures is crucial.
Purpose of the Study:
- To fabricate hierarchical porous carbon (RRC) absorbers from reed roots.
- To investigate the effect of activator dosage on material properties and electromagnetic response.
- To develop high-performance, sustainable microwave absorbing materials.
Main Methods:
- One-step KOH activation-carbonization of reed roots.
- Microstructural characterization (specific surface area, pore structure).
- Electromagnetic property testing and finite-element simulations.
Main Results:
- Optimized RRC-3 exhibited a honeycomb-like hierarchical structure with high surface area (742.8 m² g⁻¹).
- Achieved a minimum reflection loss (RLmin) of -66.2 dB at 1.74 mm.
- Demonstrated a broad effective absorption bandwidth (EAB) of 5.6 GHz and ~44 dB radar cross-section reduction.
Conclusions:
- Reed root-derived hierarchical porous carbon is a high-performance microwave absorber.
- The material offers a sustainable alternative for electromagnetic interference shielding.
- Synergistic effects of structure and composition enhance microwave absorption capabilities.
