Fe-doped Al2O3 nanoplatforms as efficient and recyclable photocatalyst for the dyes remediation

Laura C. Lerici, Candelaria Leal Marchena, Cecilia C. Torres, Cristian H. Campos, Liliana B. Pierella

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

2 Citas (Scopus)

Resumen

γ-Al2O3 nanowires (NW) were synthetized and impregnated with different amounts of iron (2, 6 and 10 wt%). Catalysts were further characterized by powder X-ray, Fourier transform infrared spectroscopy, nitrogen adsorption–desorption isotherms, UV–visible diffuse reflectance, temperature-programmed reduction, thermogravimetric analysis, transmission electron microscopy, X-ray photoelectron spectrometry and atomic absorption. The obtained materials were evaluated as heterogeneous photocatalysts in the degradation of azo dye methyl orange as model compound employing a 125 W high-pressure mercury lamp. After 240 min under irradiation the complete decoloration and 69% of mineralization was obtained when Fe6NW was employed. When commercial γ-Al2O3 was employed as support of 6 wt%. of iron and evaluated in photodegradation the final decoloration reached up to only 46%. Reaction parameters such as iron amount, catalyst amount, pH, effect of support and reuses, were evaluated. The photocatalyst was employed for five consecutive reaction cycles with only a 10% of diminish of activity, resulting in an attractive low-cost and benefit in heterogeneous catalysis.

Idioma originalInglés
Número de artículo113733
PublicaciónJournal of Photochemistry and Photobiology A: Chemistry
Volumen426
DOI
EstadoPublicada - 1 abr. 2022

Áreas temáticas de ASJC Scopus

  • Química (todo)
  • Ingeniería química (todo)
  • Física y astronomía (todo)

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