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Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System

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Concentrated Solar Induced Graphene.

Xiao-Hua Hu¹, Rui Zhang¹, Zhiyong Wu¹

¹School of Information Science and Technology, Fudan University, 220 Handan Road, Shanghai 200433, China.

|August 15, 2022

Summary

Researchers developed a green method to produce graphene from fruit peels using concentrated solar radiation. This rapid process converts waste into valuable graphene nanosheets with antibacterial properties.

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Area of Science:

Materials Science
Nanotechnology
Green Chemistry

Background:

Graphene possesses extraordinary properties and numerous applications.
Developing sustainable and cost-effective graphene production methods is crucial.

Purpose of the Study:

To develop a green, facile, and rapid method for graphene synthesis.
To utilize common biomass waste materials for graphene production.

Main Methods:

Concentrated solar radiation was used for photothermal conversion.
Fruit peels (banana, cantaloupe, coconut, orange) were converted into graphene within seconds.
Characterization involved Raman spectroscopy, SEM, TEM, XRD, and AFM.

Main Results:

Concentrated-solar-induced graphene (CSIG) was successfully produced from fruit peels.
CSIG consists of few-layer turbostratic graphene nanosheets with a thickness of ~4 nm.
CSIG demonstrated significant antibacterial activity against Escherichia coli.

Conclusions:

A simple, green, and rapid method for graphene production from biomass waste using solar energy was established.
This approach offers a sustainable route for large-scale graphene material production.
The method highlights the potential of converting waste into valuable nanomaterials.