Abstract: Titanium dioxide (TiO2) porous films photocatalysts deposited on polyacrylonitile based carbon fiber (PAN-CF) substrates through the sol-gel dip-coating technology and sinter method using polyethylene glycol (PEG) as a template. Field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) were utilized to investigate the morphologies and structures of the TiO2 porous film photocatalyst. The adsorption of methyl orange on the composites was studied and methyl orange (MO, 80mg/L) was used as a model contaminant to investigate the photocatalytic property of the composites under UV irradiation. The study revealed that surface morphology of composites and crystalline structure of titanium dioxide were remarkably influenced by the PEG template. The adsorption kinetic process of TiO2/CF composites to methyl orange solution fitted very well the pseudo-second-order kinetic model, as PEG molecules increased, the adsorption capacity is heightened. The porous TiO2/CF which using PEG2000 as a template displayed excellent catalytic performance.