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Thai) 2:
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กิจกรรมของออกไซด์ The photocatalytic activity of tio2 is greater in the presence of solar light as compared to UV light. Experimental
results indicate that the decolorization of dyes is felicitated in the presence of catalyst. The initial rate of
photodecolorization increased with increase in catalyst dose up to an optimum loading after that it did not show any
effect. As the initial concentration of the dye was increased, the rate of decolorization decreased in each dye. The
rate of photo decolorization was found to increase with increase in pH, exhibiting maximum efficiency (98.5%) at
pH8, beyond which the rate of degradation remained constant
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