Short carboxyl purified multi-walled carbon nanotubes are widely used in various advanced applications due to their unique properties. In the field of electronics, they are incorporated into conductive films, sensors, and transistors to enhance electrical conductivity and sensitivity. Their high surface area and mechanical strength make them ideal for reinforcing composite materials, improving durability and performance in aerospace, automotive, and construction industries. In energy storage, these nanotubes are used in electrodes for supercapacitors and lithium-ion batteries, significantly boosting energy density and charge-discharge efficiency. They also play a crucial role in environmental applications, such as water purification systems, where they act as adsorbents for removing heavy metals and organic pollutants. Additionally, their functionalized surface allows for effective use in biomedical applications, including drug delivery systems, biosensors, and tissue engineering scaffolds, where they enhance targeting and biocompatibility. Their versatility and exceptional properties make them a valuable material in cutting-edge technological and scientific advancements.