Short hydroxy purified multi-walled carbon nanotubes are widely used in the field of advanced materials due to their unique properties. They are often incorporated into polymer composites to enhance mechanical strength, electrical conductivity, and thermal stability. These nanotubes are particularly valuable in the production of lightweight yet durable materials for aerospace, automotive, and construction industries. In electronics, they serve as conductive additives in batteries, supercapacitors, and flexible displays, improving energy storage and device performance. Their high surface area and functionalized hydroxy groups make them suitable for use in sensors, where they enhance sensitivity and selectivity for detecting gases, biomolecules, or environmental pollutants. Additionally, they are employed in biomedical applications, such as drug delivery systems and tissue engineering scaffolds, due to their biocompatibility and ability to interact with biological molecules. Their purification and functionalization further ensure minimal toxicity and improved dispersion in various matrices, making them versatile for diverse industrial and scientific applications.