Abstract
The effects of high energy radiations, including proton, electron and UV, on the physical and chemical properties of carbon nanotubes (CNT) were investigated. The CNTs sheets were irradiated by high energy proton beam of 10 MeV, electron beam of 2 MeV, and UV radiation in ambient environment, and surface functionalization and morphological structures of CNTs before and after high-energy radiations were monitored by X-ray photoelectron spectroscopy, infrared and Raman spectroscopy. When CNTs were irradiated by proton and electron particles, reactions were induced by the transfer of kinetic energy of the bombarding particles while UV-light dissociated adsorbed O2 molecules into atomic oxygens, leading to the surface oxidation to CNTs. The irradiated CNTs exhibited radiation induced changes, distinct from native properties inherited from the classical synthetic routes.
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