| 초록 |
In this study, TiO2-reduced graphene oxide compoites were assembled by solvothermal method and subsquent calcination for photocatalytic performance. The crystalline structure and morphology of the composites were characterized by X-ray diffraction (XRD, Bruker, D2 PHASER) and scanning electron microscopy (SEM, Hitachi, S-4300SE), respectively. The specific surface areas and pore size distributions were calculated by Brunauer-Emmett-Teller (BET) equation and non-local density functional theory (NLDFT) by N2/77k adsorption-desorption isotherms using a gas adsorption analyzer (BELSORP, BEL MAX). The information of chemical bond energy on the surfaces were determined by XPS (X-ray photoelectron spectra). Also, photocatalytic activity of the samples was performed through the photocalytic degradation of the methylene blue using a Xe full spectrum solar simulator (ABET Technology, Sun 2000) adjusted with an AM 1.5G filter and analyzed measuring the absorbance by a UV-vis spectrophotometer. |
