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Updated: Dec 22, 2025
Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
Periodic Three-Dimensional Nitrogen-Doped Mesoporous Carbon Spheres Embedded with Co/Co3O4 Nanoparticles toward
Chengwei Zhang1, Yue Peng1, Yan Song1
1School of Materials Science and Engineering, Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, Hebei University of Technology, Tianjin 300130, China.
Researchers developed novel Co@Co3O4/nitrogen-doped mesoporous carbon spheres inspired by opal structures for advanced microwave absorption. This bio-inspired material demonstrates exceptional performance, significantly reducing electromagnetic interference.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Bio-inspired materials excel in mechanical, acoustic, and optic applications.
- Microwave absorption applications rarely utilize bio-inspired materials.
Purpose of the Study:
- To design and synthesize a novel bio-inspired material for microwave absorption.
- To investigate the microwave absorption performance of Co@Co3O4/nitrogen-doped mesoporous carbon spheres (Co@Co3O4/NMCS).
Main Methods:
- Synthesis of Co@Co3O4/NMCS with a periodic three-dimensional structure.
- Optimization of microwave absorption by varying Co@Co3O4 nanoparticle content.
- Electromagnetic scattering simulation using radar cross-section analysis.
Main Results:
- Co@Co3O4/NMCS with approximately 20 wt% Co@Co3O4 achieved a reflection loss of -53.8 dB at 5.7 GHz.
- Simulated radar cross-section showed efficient suppression of electromagnetic scattering from metal structures.
- The material demonstrated excellent microwave-absorbing performance.
Conclusions:
- The combination of periodic porous N-doped mesoporous carbon spheres and magnetic Co@Co3O4 nanoparticles leads to superior microwave absorption.
- This bio-inspired material shows significant potential for microwave absorption applications.
- The opal structure inspiration provides a novel pathway for designing advanced microwave absorbers.
