Preparation and photocatalytic performances of TiO_2/carbon fiber porous film

Porous titanium dioxide/carbon fiber(TiO2/CF) photocatalytic material was prepared by loading titanium dioxide on the surface of carbon fiber through the sol-gel dip-coating technology and sinter method using polyethylene glycol(PEG) as a pore-foaming agent.Field emission scanning electron microscopy(FE-SEM) and X-ray diffraction(XRD) were utilized to characterize the morphology and crystal structure of the material.The adsorption of methyl orange on TiO2/CF was studied,and its photocatalytic property under UV irradiation was tested with methyl orange(MO,80 mg/L) as a degradation object.It was revealed that the morphology and crystal structure of TiO2/CF were remarkably influenced by the PEG pore-foaming agent.The adsorption kinetic process of TiO2/CF to methyl orange solution fitted very well with the pseudo-second-order kinetic equation,and the adsorption capacity of TiO2/CF increased with the increase of PEG molecules.The porous TiO2/CF obtained using PEG 2000 displayed excellent catalytic performance.