Photo-catalysis of phenol derivatives with Fe2O3 nanoparticles dispersed on SBA-15
Por:
Montiel-Palacios E., Medina-Mendoza A.K., Sampieri A., Angeles-Chávez C., Hernández-Pérez I., Suarez-Parra R.
Publicada:
1 ago 2009
Categoría:
Ceramics and Composites
Resumen:
Highly ordered hexagonal (p6mm) mesoporous silica SBA-15 was synthesized through a hydrothermal treatment under acidic conditions. Fe2O3/SBA-15 catalysts were prepared by impregnation of SBA-15 media with iron(III) acetylacetonate, iron(III) chloride or iron(II) sulfate solutions. X-ray Diffraction (XRD), X-ray fluorescence (XRF), high angle annular dark field scanning transmission electron microscopy (HAADF-STEM), energy dispersive X-ray (EDX) spectroscopy and nitrogen physisorption characterization were carried out for SBA-15 and Fe2O3/SBA-15 materials. After impregnation and calcination at 823 K, the iron oxide dispersion in SBA-15 was analyzed by STEM and EDX. FeCl3 provides the highest amount of Fe loading in mesoporous SBA-15. The photocatalytic properties of Fe2O3/SBA-15 samples at pH = 3 and pH = 6 were evaluated in catechol and hydroquinone photodecomposition by inducing visible radiation. The conversion of catechol and hydroquinone, at pH = 3 and pH = 6 with iron(III) acetyla
Filiaciones:
UNAM, Ctr Invest Energia, Dept Mat Solares, Temixco Mor 62580, Mexico
Universidad Autónoma Metropolitana-A, Dpto. de Ciencias Básicas, Av. Sn. Pablo No. 180, México 02200, D. F., Mexico
Colegio de Postgraduados, Campus Montecillo, Carretera México-Texcoco, km 36.5, 56230, Montecillo, Estado de México, Mexico
Instituto Mexicano del Petróleo, Programa de Ingeniería Molecular, Eje Central Lázaro Cárdenas 152, 07730 México, D. F., Mexico
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