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Network Covalent Solids

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...

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Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering

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Multi-functional flexible 2D carbon nanostructured networks.

Shichao Zhang^1,2,3, Hui Liu^1,2, Jianyong Yu²

¹State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China.

Nature Communications

|October 13, 2020

Summary

This summary is machine-generated.

Researchers developed a large-scale method to create 2D carbon nanostructured networks. These flexible, conductive materials offer advanced applications in energy, electronics, and environmental solutions.

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Area of Science:

Materials Science
Nanotechnology
Chemistry

Background:

Two-dimensional (2D) network carbon nanomaterials beyond graphene are crucial for advancements in environmental, electronic, and energy sectors.
Developing scalable synthesis methods for these materials is essential for practical applications.

Purpose of the Study:

To report a facile, large-scale self-assembly method for creating 2D carbon nanostructured networks.
To explore the unique structural and functional properties of these novel carbon networks.

Main Methods:

Utilizing an electro-spraying/netting technique to control droplet dynamics and micro-electric fields.
Manipulating Taylor cone instability during the electro-spraying process to achieve self-assembly.
Characterizing the resulting meter-level carbon nanostructured networks.

Main Results:

Successfully synthesized large-scale 2D carbon nanostructured networks with combined properties of carbon nanotubes and graphene.
Demonstrated remarkable flexibility, nanoscale conductivity, and exceptional performance in diverse applications.
Highlighted the material's potential as filters, separators, absorbents, and components for wearable electronics and energy storage devices.

Conclusions:

The electro-spraying/netting method provides a scalable route to novel 2D carbon nanomaterials.
These materials exhibit unique properties suitable for multi-functional applications in energy, electronics, and environmental remediation.
This work paves the way for innovative designs of high-performance carbon-based nanostructures.