Carbon nanotubes are tubular nanomaterials with nano-sized diameters and micro-sized lengths. It has 100 times the electrical properties of copper and 1,000 times the electrical properties of steel, and has better thermal conductivity than diamonds. Carbon nanotubes are classified by the number of bonds of the carbon atoms that make up the wall. First, a single-walled carbon nanotube is a single-walled tube made up of carbon atoms, which has the best electrical and thermal conductivity. Double-walled carbon nanotubes with two walls of carbon atoms have excellent electrical conductivity and mechanical properties. Multi-Wall Nanotubes are a tube with several carbon atomic layers in one tube, and have a wide range of applications due to their excellent mechanical properties, easy manufacturing, and price competitiveness. It has characteristics. By growing a small amount of fibrous nanocarbons around the carbon material, the metal catalyst is protruded to the outside and additional pores may be ensured through formation of external pores. It was confirmed that the raw material prepared by the above method not only greatly increased the existing specific surface area but also increased the mesopores, which have a great influence on various reaction mechanisms, by 5 to 6 times.