Anodization of aluminum in a mixture solution of 1,3-propanediol solutions and 0.4 mol l −1 H 3 PO 4 at low temperature has been studied for the first time. The morphology and composite of AAO template were characterized by means of scanning electron microscope (SEM) in combination with energy dispersive spectrometer (EDS). It was found that the difference in pore density and pore diameter characteristics is found to depend on the anodizing temperature. The resulting anodic aluminium oxide (AAO) templates have uniform and regular pores whose diameters are significantly smaller than those found in AAO templates anodized at room temperature.