Environmental Engineering Reference
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figure 12.8
Crystal structure of Na 2 Ti 6 O 13 . Reproduced with permission from Ref. [20]. © 2008, Springer.
figure 12.9 Scanning electron microscopy (SeM) micrographs of Na 2 Ti 6 O 13 where the presence of microrods can be observed.
Reproduced with permission from Ref. [20]. © 2008, Springer.
table 12.5 Kinetic parameters of methylene
blue degradation using na 2 ti 6 o 13 as photocatalyst
Sol-gel
Na 2 Ti 6 O 13
k (min −1 )
t 1/2 (min)
400°C
0.0149
46
600°C
0.0011
630
12.1.4 Sic-tio 2 compounds
SiC has been considered as a support due to its properties like high thermal conductivity, high mechanical strength, as well as
low chemical reactivity. In this work, TiO 2 was deposited on SiC by the sol-gel method, but in order to increase the efficiency
of the photocatalytic activity, time of deposition was decreased considerably. SiC-TiO 2 has been tested as a catalyst for the
degradation of indigo carmine and methylene blue dyes. In this case, SiC-TiO 2 was prepared via sol-gel method [22, 23].
According to the results, SiC did not undergo any reaction after the deposition of TiO 2 (Fig. 12.10).
 
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