Carbon nanotubes, particularly multi-walled ones, are widely used in various advanced applications due to their exceptional mechanical, electrical, and thermal properties. In electronics, they are utilized to create conductive films, transistors, and sensors, enhancing device performance and miniaturization. Their high strength and lightweight nature make them ideal for reinforcing composites in aerospace, automotive, and sports equipment industries. In energy storage, multi-walled carbon nanotubes are incorporated into batteries and supercapacitors to improve conductivity and energy density. They also play a significant role in environmental applications, such as water filtration and air purification, by effectively adsorbing contaminants. Additionally, their use in biomedical fields includes drug delivery systems and tissue engineering scaffolds, leveraging their biocompatibility and unique structural properties.