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Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

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High Frequency Electromagnetic Shielding by Biochar-Based Composites.

Daniele Torsello^1,2, Mattia Bartoli^3,4, Mauro Giorcelli^3,4

¹Politecnico di Torino, Department of Applied Science and Technology, C.so Duca degli Abruzzi 24, 10129 Turin, Italy.

Nanomaterials (Basel, Switzerland)

|September 28, 2021

Summary

This summary is machine-generated.

This study explores microwave shielding using biochar composites for construction. Tailoring biochar content in composites allows for desired electromagnetic shielding properties, offering a versatile solution.

Keywords:

biochar carbon-based composites electromagnetic shielding high frequency

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Area of Science:

Materials Science
Electromagnetics
Composite Materials

Background:

Non-structural composites are increasingly used in building construction.
Biochar is a cost-effective and eco-friendly material with potential applications in composites.
Effective microwave shielding is crucial for various electronic and communication applications.

Purpose of the Study:

To investigate the microwave shielding efficiency of biochar-based non-structural composites.
To determine the relationship between biochar content and shielding properties.
To establish a method for designing composites with tailored electromagnetic shielding.

Main Methods:

Direct measurement of complex permittivity for raw materials and composites.
Utilizing a permittivity mixing formula to calculate properties for various composite combinations.
Calculating electromagnetic shielding efficiency from complex permittivity data.

Main Results:

The complex permittivity of biochar composites was measured in the 100 MHz-8 GHz frequency range.
Tailoring the biochar content in composites allows for precise control over electromagnetic shielding values.
The study demonstrated the potential for achieving desired shielding properties by adjusting biochar concentration.

Conclusions:

Biochar composites offer tunable microwave shielding properties suitable for diverse applications.
The developed approach provides a rapid preliminary tool for designing composites with specific shielding requirements.
This research highlights the potential of sustainable materials like biochar in advanced composite applications.