Synthesis of Co2+-doped Fe2O3 photocatalyst for degradation of pararosaniline dye

R. Suresh, K. Giribabu, R. Manigandan, R. V. Mangalaraja, Jorge Yanez Solorza, A. Stephen, V. Narayanan

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

49 Citas (Scopus)

Resumen

In this paper, x (=2, 5, 7 and 10mol%) Co2+-doped Fe2O3 (xCo:Fe2O3) nanoparticles with enhanced photocatalytic activity have been reported. xCo:Fe2O3 nanoparticles were successfully prepared by co-precipitation followed thermal decomposition method. The structural, optical and morphological properties of the prepared samples were studied by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), diffuse reflectance (DR) UV–visible absorption spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The obtained results revealed that Co2+ ions were well doped within the lattices of Fe2O3. Also, Co2+ ions suppress the formation of the most stable α- Fe2O3 and stabilize less stable γ-Fe2O3 at 450 °C. The photocatalytic activity of xCo:Fe2O3 was examined by using pararosaniline (PR) dye. It was found that photocatalytic degradation of PR depends on dopant concentration (Co2+ ions). Relatively, the highest photocatalytic activity was observed for 5%Co:Fe2O3 nanoparticles. The plausible photocatalytic degradation pathway of PR at xCo:Fe2O3 surface has also been proposed.

Idioma originalInglés
Páginas (desde-hasta)39-46
Número de páginas8
PublicaciónSolid State Sciences
Volumen68
DOI
EstadoPublicada - 1 jun. 2017
Publicado de forma externa

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