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Multi-Walled Carbon Nanotubes GT-282
Structurally, MWCNTs are elongated cylindrical nano-objects composed of sp²-hybridized carbon atoms, with diameters typically ranging from 3-30 nanometers and lengths that can extend up to several centimeters. This remarkable geometry gives them aspect ratios that can vary from ten to an astounding ten million, making them among the most anisotropic materials known to science. Each tube consists of multiple concentric graphene layers, with the inner channel remaining straight due to the constant
Multi-Walled Carbon Nanotubes (MWCNTs)
GT-282
Multi-walled carbon nanotubes (MWCNTs) are revolutionary nanomaterials that represent one of the most significant discoveries in nanotechnology. First reported by Sumio Iijima in 1991, these extraordinary structures consist of multiple concentric layers of graphene sheets rolled into hollow cylindrical tubes, creating a unique nanoscale architecture that bridges the gap between molecular and macroscopic worlds.
Structurally, MWCNTs are elongated cylindrical nano-objects composed of sp²-hybridized carbon atoms, with diameters typically ranging from 3-30 nanometers and lengths that can extend up to several centimeters. This remarkable geometry gives them aspect ratios that can vary from ten to an astounding ten million, making them among the most anisotropic materials known to science. Each tube consists of multiple concentric graphene layers, with the inner channel remaining straight due to the constant wall thickness along the tube axis. The ends of perfect MWCNTs are typically capped by hemispherical fullerene-like structures, though these can be opened through various chemical or physical treatments to access the hollow interior.
The properties of MWCNTs are nothing short of extraordinary. They exhibit exceptional tensile strength of approximately 0.15 TPa, making them stronger than steel while maintaining an incredibly lightweight structure. Their electrical conductivity is particularly intriguing, as they behave as semiconductors with the outer layer carrying maximum charge while inner layers remain largely inactive. This unique electronic behavior distinguishes them from single-walled carbon nanotubes, which typically exhibit metallic conductivity. Additionally, MWCNTs demonstrate remarkable chemical and thermal resistance, withstanding temperatures up to 600°C and showing excellent resistance to various chemical environments.
The applications of MWCNTs span an impressive range of fields and industries. In electronics, they are utilized in field emission devices and semiconductor applications. Their exceptional mechanical properties make them ideal reinforcing agents in composite materials for automotive parts and sports equipment. The biomedical field has embraced MWCNTs for drug delivery systems, cancer treatment applications, and gene therapy, where their unique geometry allows for precision-controlled delivery of therapeutic agents. Environmental applications include water filtration systems, while energy storage applications encompass batteries and solar cells. Other notable uses include coatings for thin conductive films, membrane and filter technologies, and various composite polymer applications.
The discovery and development of MWCNTs have opened unprecedented opportunities across multiple disciplines, from materials science and electronics to biotechnology and environmental engineering. Their unique combination of mechanical strength, electrical properties, and chemical stability continues to drive research and innovation, positioning them as one of the most versatile and promising materials of the 21st century.
Technical Parameters
- Appearance: Black powder
- Outside diameter: 6 ~ 15 nm (TEM)
- Length: ≤50 um (SEM)
- Ash content: ≤3 wt%
- Powder resistivity: 600 ~ 1000μΩ·m
- Moisture content: ≤1%
- Specific surface area: 250 ~310 m2/g
- Tamping density: 0.02 ~ 0.08g/cm3
- D50 particle size: ≤20μm
Metal Content ICP
Fe | ppm | ≤150 |
Co | ppm | ≤6000 |
Ni | ppm | ≤10 |
Cu | ppm | ≤10 |
Zu | ppm | ≤10 |
Cr | ppm | ≤10 |
Storage:
Storage environment: temperature control spec:-15℃~45 ℃, humidity:≤85%, avoid direct sunshine.
Packing & Transportation:
Material packed in aluminum bags, bags packed in cartons and stacked on pallets for international delivery.
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