Carbon nanotubes, particularly multi-walled variants, are widely used in various advanced applications due to their exceptional mechanical, electrical, and thermal properties. In electronics, they serve as conductive additives in composites, enhancing the performance of batteries, supercapacitors, and flexible displays. Their high strength-to-weight ratio makes them ideal for reinforcing materials in aerospace and automotive industries, improving durability while reducing weight. In the field of energy, they are utilized in solar cells and fuel cells to enhance efficiency and conductivity. Additionally, their large surface area and unique structure make them valuable in environmental applications, such as water filtration and gas sensing, where they effectively adsorb pollutants and detect harmful gases. In biomedical engineering, multi-walled carbon nanotubes are explored for drug delivery systems and tissue engineering scaffolds due to their biocompatibility and ability to penetrate cell membranes.