عنوان مقاله [English]
In this study, lead titanate nanopowder was synthesized using mechanical activation. Raw materials including titanium oxide powder (anatase) and Lead oxide (ІІ) with a ball to powder weight ratio of 1:10 and the powder ratio of 1:1 were milled in a planetary ball mill for 30 hours. Then, they were heated at 800, 900 and 1000 °C. The obtained nanopowder was investigated by field emission scanning electron microscope (FESEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The UV absorption spectroscopy was used to calculate the energy gap. Photocatalytic activity of nanopowder by dye degradation of methyl orange under UV light was evaluated. The effects of various influential parameters including initial dye concentration, photocatalyst dose and pH on the dye decolorization were also optimized. The optimum value for initial dye concentration and photocatalyst dose, were 10 ppm and 0.042 g respectively. Also, the best rate of decolorization observed at pH=4. Our results showed that, the photocatalytic degradation of methyl orange dye in the presence of lead titanate nanopowder was done.