Besides TiO2 contents, the photocatalytic activity of the
TiO2/MC nanocomposites calcinated at different temperatures
was also evaluated. Fig. 7 illustrated degradation rates of MO
by the nanocomposites with different calcination temperatures
from 350 to 750 o
C. It can be found that the activity of MO
degradation is in the order of 50%TiO2/MC-450 >
50%TiO2/MC-550 > 50%TiO2/MC-750 > 50%TiO2/MC-650 >
50%TiO2/MC-350. It is suggests that the photocatalytic
activity be related to both pore structure and crystal structure
of the nanocomposites. Generally, the smaller the particle size,
the higher the activity TiO2 is. In this study, the sample
calcinated at 450 o
C exhibits the highest activity, implying that
the calcination temperature of 450 °C is crucial. But the
activity of 50%TiO2/MC-750 is higher than that of
50%TiO2/MC-650, which has a smaller particle size,
suggesting that the crystal structure might be more important
than crystal particle size
Besides TiO2 contents, the photocatalytic activity of the
TiO2/MC nanocomposites calcinated at different temperatures
was also evaluated. Fig. 7 illustrated degradation rates of MO
by the nanocomposites with different calcination temperatures
from 350 to 750 o
C. It can be found that the activity of MO
degradation is in the order of 50%TiO2/MC-450 >
50%TiO2/MC-550 > 50%TiO2/MC-750 > 50%TiO2/MC-650 >
50%TiO2/MC-350. It is suggests that the photocatalytic
activity be related to both pore structure and crystal structure
of the nanocomposites. Generally, the smaller the particle size,
the higher the activity TiO2 is. In this study, the sample
calcinated at 450 o
C exhibits the highest activity, implying that
the calcination temperature of 450 °C is crucial. But the
activity of 50%TiO2/MC-750 is higher than that of
50%TiO2/MC-650, which has a smaller particle size,
suggesting that the crystal structure might be more important
than crystal particle size
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