Abstract
In this study the synthesized photocatalysts such as TiO2 nanoparticles and MWCNTs@TiO2 are applied for elimination of methyl orange (MO). The results confirm that the MO concentration is reduced by enhancement of irradiation time and weight fraction of photocatalysts. However, the degradation rate of MO using MWCNTs@TiO2 is higher than that of TiO2 nanoparticles. Statistical analysis of the degradation rate reveals that the influence of irradiation time is more that weight fraction. Meanwhile, the results of ANOVA depict that both of irradiation time and weight fraction have a reasonable effect on the degradation rate of MO. The hypothesis test confirms that the variation of the MO concentration can be successfully predicted using statistical models that contain all of the significant main factors and their interactions.
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