Short carboxyl purified multi-walled carbon nanotubes are widely used in various advanced applications due to their unique properties. They are commonly incorporated into polymer composites to enhance mechanical strength, electrical conductivity, and thermal stability, making them ideal for use in aerospace, automotive, and construction materials. In electronics, they serve as conductive additives in batteries, supercapacitors, and sensors, improving performance and efficiency. Their functionalized surface allows for better dispersion in aqueous and organic solvents, facilitating their use in biomedical applications such as drug delivery systems, biosensors, and tissue engineering scaffolds. Additionally, they are employed in environmental applications for water purification and pollutant adsorption due to their high surface area and chemical reactivity.