Carbon nanotubes, particularly multi-walled ones, are widely used in various advanced applications due to their unique 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 and lightweight nature make them ideal for reinforcing materials in aerospace, automotive, and construction industries, improving durability while reducing weight. In the energy sector, multi-walled carbon nanotubes are utilized in solar cells and fuel cells to enhance efficiency and conductivity. They also play a significant role in environmental applications, such as water filtration and gas sensing, due to their large surface area and adsorption capabilities. Additionally, their use in biomedical fields includes drug delivery systems and tissue engineering, where their biocompatibility and structural properties are advantageous.