论文部分内容阅读
TiO_2-loaded activated carbon fibers(ACF) were prepared by a hydrothermal method.The samples were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),Fourier transform infrared(FT1R) spectrometry and UV-vis diffuse reflectance spectra(DRS).SEM images showed that the TiO_2nanoparticles were deposited on the surface of ACF,and the particle size and loading amount of TiO_2were varied by changing the initial concentration of tetrabutyl titanate(TBOT).The results of an ash experiment showed that the loading amounts of TiO_2 were 18.4%,43.3%,52.5%,75.1%,and 91.1%for initial concentrations of TBOT of 0.07,014,0.21,0.28,and 0.35 mol/L,respectively.Physical interactions played an important role in the formation of TiO_2/ACF composite fibers that absorb UV and visible light.Compared with those of ACF,improved adsorption and photocatalytic activity toward Rhodamine B(RhB)were observed for TiO_2/ACF composite fiber.The Rhodamine B could be removed efficiently by TiO_2/ACF composite fibers,and the TiO_2 loading amount had a significant effect on the photocatalytic activity of TiO_2/ACF composite fibers.
TiO_2-loaded activated carbon fibers (ACF) were prepared by a hydrothermal method. These samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT1R) spectrometry and UV-vis diffuse reflectance spectra (DRS). SEM images showed that the TiO_2nanoparticles were deposited on the surface of ACF, and the particle size and loading amount of TiO_2were varied by changing the initial concentration of tetrabutyl titanate (TBOT). The results of an ash experiment showed that the loading amounts of TiO 2 were 18.4%, 43.3%, 52.5%, 75.1%, and 91.1% respectively for initial concentrations of TBOT of 0.07,014,0.21,0.28, and 0.35 mol / L, respectively.Physical interactions played an important role in the formation of TiO 2 / ACF composite fibers that absorb UV and visible light .Compared with those of ACF, improved adsorption and photocatalytic activity toward Rhodamine B (RhB) were observed for TiO 2 / ACF composite fiber.The Rhodamine B could be removed efficiently by TiO 2 / ACF com posite fibers, and the TiO 2 loading amount had a significant effect on the photocatalytic activity of TiO 2 / ACF composite fibers.