Hydroxy purified multi-walled carbon nanotubes are widely used in the field of materials science due to their enhanced dispersibility and functional properties. They are incorporated into polymer composites to improve mechanical strength, electrical conductivity, and thermal stability, making them ideal for applications in aerospace, automotive, and electronics industries. In energy storage, these nanotubes serve as conductive additives in batteries and supercapacitors, enhancing charge transfer and overall performance. They are also utilized in environmental applications, such as water filtration and pollutant adsorption, due to their high surface area and reactivity. Additionally, their functionalized surface makes them suitable for biomedical applications, including drug delivery systems and biosensors, where precise targeting and biocompatibility are essential.