| 초록 |
In this study, the mesoporous anatase TiO2 spheres/MWCNTs nanocomposites were synthesized via sol-gel method and solvothermal process. As-prepared nanocomposites represented a large specific surface area (104-190 m2/g), occurrence of TiO2 in the anatase phase, and reduced band gap energy (from 3.30 eV to 2.08 eV). Photodegradations carried out for 2h using trichloroethylene as chlorinated volatile organic compound. The nanocomposites showed enhanced photocatalytic activity. In particular, the nanocomposites containing 20 wt.% MWCNTs exhibited the best photocatalytic efficiency and degradation rate compared to the other prepared-materials. The phenomenon was attributed that the nanocomposites improved adsorption capacity of pollutants, light absorption capability, electron-hole pair lifetime, and absorbance in visible light. |
