Graphitized carboxyl multi-walled carbon nanotubes are widely used in the field of materials science for enhancing the mechanical, electrical, and thermal properties of composites. They are incorporated into polymers, metals, and ceramics to create lightweight yet strong materials, ideal for aerospace, automotive, and construction industries.

In electronics, these nanotubes serve as conductive additives in batteries, supercapacitors, and sensors, improving energy storage and signal detection capabilities. Their high surface area and conductivity make them suitable for use in flexible and wearable electronics.

In biomedical applications, they are utilized for drug delivery systems, biosensors, and tissue engineering due to their ability to functionalize with biomolecules and their biocompatibility. Their unique structure also aids in water purification and environmental remediation by adsorbing pollutants and heavy metals.

Additionally, they play a role in catalysis, where they act as supports for catalysts in chemical reactions, enhancing efficiency and selectivity. Their versatility and performance make them a valuable component in advanced technological applications.