نوع مقاله : پژوهشی
نویسنده
دانشگاه کوثر بجنورد
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
This study investigates the photocatalytic performance of lanthanum-doped titanium dioxide/iron oxide catalyst in the photocatalytic removal of methyl red, alizarin red, methylene blue, methyl orange and phenolphthalein dyes under different conditions in terms of environmental acidity (pH=3-11) and reaction time (t=0-35 min) at a constant temperature of 45 °C, dye concentration equal to 10 ppm and 0.25 g of catalyst. The results show that the photocatalytic activity strongly depends on the solution pH and reaction time. For investigating the simultaneous effects of these two parameters on photocatalytic degradation efficiency, response surface methodology optimization was employed. The best photocatalytic degradation efficiency for alizarin red dye was achieved at pH=3 and at a time of 35 min with 93.77%. The findings demonstrate the effectiveness of the La/TiO2-Fe2O3 catalyst in enhancing degradation of other dyes (methyl red (46.25%), methylene blue (42.37%), methyl orange (11.03%) and phenolphthalein (57.84%)) at pH=3 and provide valuable insights for the optimization of photocatalytic processes.
کلیدواژهها [English]
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