Purified multi-walled carbon nanotubes are widely used in the field of electronics due to their excellent electrical conductivity and mechanical strength. They are incorporated into conductive films, sensors, and transistors to enhance performance and durability. In energy storage, these nanotubes are utilized in batteries and supercapacitors to improve charge capacity and efficiency. Their high surface area and thermal conductivity make them ideal for use in composite materials, where they reinforce polymers, metals, and ceramics for applications in aerospace, automotive, and construction industries. Additionally, they play a significant role in environmental applications, such as water filtration and air purification, by effectively adsorbing contaminants. In biomedical fields, they are explored for drug delivery systems, tissue engineering, and biosensors due to their unique structural and functional properties.