In:
International Journal of Photoenergy, Hindawi Limited, Vol. 2012 ( 2012), p. 1-7
Abstract:
This paper is focused to study Sm 2 FeTaO 7 pyrochlore-type compound as solar photocatalyst for the degradation of indigo carmine dye in aqueous solution. Sm 2 FeTaO 7 was synthesized by using conventional solid state reaction and sol-gel method. X-ray diffraction results indicated that Sm 2 FeTaO 7 exhibit a monoclinic crystal structure. By scanning electron microscopy analysis, it was observed that sol-gel material presents particle size of around 150 nm. The specific surface area and energy bandgap values were 12 m 2 g −1 and 2.0 eV, respectively. The photocatalytic results showed that indigo carmine molecule can be degraded under solar light irradiation using the synthesized materials, sol-gel photocatalyst was 8 times more active than solid state. On the other hand, when Sm 2 FeTaO 7 was impregnated with CuO as cocatalyst the photocatalytic activity was increased because CuO acts as electron trap decreasing electron-hole pair recombination rates.
Type of Medium:
Online Resource
ISSN:
1110-662X
,
1687-529X
Language:
English
Publisher:
Hindawi Limited
Publication Date:
2012
detail.hit.zdb_id:
2028941-8
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