What are Double Walled Carbon Nanotubes (DWCNTs)?

Double Walled Carbon Nanotubes (DWCNTs) are nanostructured carbon materials consisting of two concentric graphene cylinders. They exhibit unique electrical, thermal, and mechanical properties, making them ideal for applications in electronics, energy storage, biomedical, aerospace, and composite materials.

Chemical Properties and CAS Number

• Chemical Formula: C
• CAS Number: 308068-56-6 (MWCNTs, applicable for DWCNTs)
• Appearance: Black fine powder
• Density: ~1.3-1.5 g/cm³
• Diameter: 1-5 nm (inner tube), 2-10 nm (outer tube)
• Length: Typically 0.5-10 μm
• Solubility: Dispersible in organic solvents, functionalized variants improve water solubility
• Chemical Stability: High oxidation resistance, excellent thermal and mechanical stability

Applications of Double Walled Carbon Nanotubes (DWCNTs)

1. Electronics & Conductive Materials

Used in printed electronics, flexible circuits, EMI shielding, and conductive coatings due to their exceptional electrical properties.

2. Energy Storage & Battery Technology

Applied in lithium-ion batteries, supercapacitors, and fuel cells to enhance charge storage, conductivity, and energy efficiency.

3. Biomedical & Drug Delivery

Utilized in nanomedicine, targeted drug delivery, bio-imaging, and cancer therapy for their biocompatibility and functionalization capabilities.

4. Aerospace & Lightweight Structural Components

Employed in lightweight aerospace materials, high-strength composites, and advanced structural reinforcements.

5. Polymer Composites & Structural Enhancement

Integrated into high-performance polymers, reinforced plastics, and industrial composites for improved mechanical properties and durability.

6. Water Purification & Environmental Applications

Used in wastewater treatment, pollutant adsorption, and filtration membranes due to their high surface area and reactivity.

Pricing of Double Walled Carbon Nanotubes (DWCNTs)

Prices vary based on purity, functionalization, and industry application:

• Industrial Grade: Typically ranges from $500 – $3,000 per kilogram
• High-Purity/Specialized Grade: Prices range from $5,000 – $20,000 per kilogram, used in electronics, biomedical, and high-performance applications.

Factors Influencing Carbon Nanotube Prices

• Purity level and tube diameter
• Functionalization and surface modification
• Bulk order volume and processing cost
• Industry demand for advanced nanomaterials

Conclusion

Double Walled Carbon Nanotubes (DWCNTs) are high-performance nanomaterials used in electronics, batteries, biomedical applications, aerospace, and composites. Their high conductivity, exceptional strength, and chemical stability make them essential for next-generation scientific and industrial applications. Pricing depends on purity, processing, and specific applications.