Short carboxyl purified multi-walled carbon nanotubes are widely used in the field of material science and engineering due to their exceptional mechanical, electrical, and thermal properties. They are often incorporated into polymer composites to enhance strength, conductivity, and durability, making them ideal for applications in aerospace, automotive, and construction industries. In electronics, these nanotubes are utilized in the development of conductive films, sensors, and flexible displays, owing to their high electrical conductivity and transparency. Additionally, their functionalized surface allows for improved dispersion in various solvents, making them suitable for use in energy storage devices like batteries and supercapacitors, where they enhance electrode performance. In biomedical applications, they are explored for drug delivery systems, biosensors, and tissue engineering scaffolds due to their biocompatibility and ability to interact with biological molecules. Their unique properties also make them valuable in environmental applications, such as water filtration and pollutant adsorption, where they effectively remove contaminants from water and air.