Product Overview

Multi-walled carbon nanotubes (MWCNTs) are composed of multiple layers of graphene sheets rolled into cylinders, with a fixed distance maintained between the layers, forming a coaxial tubular structure. Their diameters typically range from 5 to 30 nm, while lengths can vary from a few micrometers to several tens of micrometers, depending on the preparation method and conditions. The purity of industrial-grade multi-walled carbon nanotubes can reach 95% or higher, ensuring stability and reliability in applications. The main preparation method for industrial-grade multi-walled carbon nanotubes is chemical vapor deposition (CVD). In the CVD process, carbon-containing substances (such as methane, acetylene, etc.) decompose and deposit into tubular structures at high temperatures under the action of catalysts (such as iron, cobalt, nickel, and other transition metals). By controlling the reaction conditions and using specific catalysts, precise control over the diameter, length, and structural characteristics of multi-walled carbon nanotubes can be achieved.

Technical Parameters

Diameter: 8-15nm

Length: 30-50μm

Purity: >95wt%