What are the carbon nanotube applications?
The hydrogen storage materials: gas adsorption in adsorption is a solid adsorbent surface behavior the occurrence process of adsorbent and solid surface characteristics are closely related. The adsorption mechanism of nanoparticles, it was generally accepted that adsorption of carbon nanotubes is mainly due to the surface hydroxyl carbon nanotubes nanoparticles. The effect of carbon nanotubes on the surface of to hydroxyl and certain cationic bonding, so as to achieve the apparent of metal ions or organic matter adsorption. In addition, carbon nanotube particles have a large surface area, is also an important reason for the adsorption of carbon nanotubes. Zheng Qingrong, Gu Anzhong and [4] were studied on the adsorption behavior of hydrogen in carbon nanotubes Cheng Hui Ming et al. Synthesis of SWNTS treated properly can store hydrogen at room temperature, the hydrogen storage weight of up to 4.2%, and 78.3% of the hydrogen storage under normal temperature and pressure The hydrogen is released, and the remaining hydrogen is released after heating. The SWNTS can be reused and has a high commercial valueThe proton exchange membrane fuel cell (PEM) is a new type of carbon nanotubes: fuel cell vehicle power supply the most potential, the fuel cell through the consumption of hydrogen to generate electricity, the exhaust gas discharged into water vapor, therefore no pollution. It is compared with the lithium ion battery and Ni MH battery has great superiority. Can use carbon nanotubes hydrogen storage material supply hydrogen, can also be through the decomposition of oil and gas and other hydrocarbons or directly from the air to obtain hydrogen fuel cell hydrogen source.
The application of carbon nanotubes in composite materials: carbon nanotubes with nanoparticles in size effect, but also has high mechanical strength, good flexibility, high conductivity, unique properties, become the ideal reinforcement of polymer composites, is widely used in chemical industry, machinery, electronics, aviation, aerospace and other fields. But because of carbon nanotubes are easily assembled into bundles or wound, and compared with other nanoparticles, the surface is relatively inert, in common organic solvents or polymer materials dispersion in the low, which greatly restricts its application. Therefore, the surface of carbon nanotubes modified carbon nanotubes has become a research hotspot the polymer / composite material. At present, the domestic and foreign research on the surface modification of carbon nanotubes is mainly covalent and non covalent bond groups introduced on the surface, such as the use of the surface Chemical modification, surfactant modification, or by coating modification methods of carbon nanotube polymer molecules. In recent years is presented. The ultraviolet irradiation, plasma radiation modification and processing method. The surface modification of carbon nanotubes for polymer composites can significantly improve the mechanical properties, electrical properties and thermal properties.
