Hydroxy purified multi-walled carbon nanotubes are widely used in various industries due to their unique properties. In the field of electronics, they are employed to enhance the conductivity and performance of devices such as sensors, batteries, and supercapacitors. Their high surface area and mechanical strength make them ideal for reinforcing composite materials, improving durability and flexibility in aerospace, automotive, and construction applications. In medicine, these nanotubes are utilized for drug delivery systems, enabling targeted and controlled release of therapeutic agents. Additionally, they play a crucial role in environmental applications, such as water purification and air filtration, by effectively adsorbing pollutants and contaminants. Their functionalization with hydroxyl groups further enhances their compatibility and dispersion in different matrices, expanding their utility in advanced material science and nanotechnology.