INVESTIGADORES
SAPAG Manuel Karim
artículos
Título:
"Synthesis and Photocatalytic Activity of Titania-Loaded Transition Metal-Modified MCM-41 Molecular Sieves"
Autor/es:
VERÓNICA R. ELÍAS; ELIANA G. VASCHETTO; KARIM SAPAG; MÓNICA E. CRIVELLO; SANDRA G. CASUSCELLI; GRISELDA A. EIMER
Revista:
TOPICS IN CATALYSIS
Editorial:
SPRINGER/PLENUM PUBLISHERS
Referencias:
Año: 2011 vol. 54 p. 277 - 286
ISSN:
1022-5528
Resumen:
MCM-41 materials were modified with Cr, Fe,
Co and Ti by the wet impregnation method. Various
techniques including ICP, XRD, N2 adsorption, UVVis
DRS and TPR were employed for the catalysts characterization.
The Acid Orange 7 (AO7) degradation in aqueous
solution was studied over the synthesized photocatalyst
under UVVis and visible radiation. The Cr modified catalysts
exhibited the major activity under UV and visible
light. Particularly, the Cr/MCM-41 sample reached a dye
degradation of around 81% in visible light, being the Cr6?2 adsorption, UVVis
DRS and TPR were employed for the catalysts characterization.
The Acid Orange 7 (AO7) degradation in aqueous
solution was studied over the synthesized photocatalyst
under UVVis and visible radiation. The Cr modified catalysts
exhibited the major activity under UV and visible
light. Particularly, the Cr/MCM-41 sample reached a dye
degradation of around 81% in visible light, being the Cr6?6?
species primarily responsible for this photoactivity. Upon
the loading of TiO2, the searched heterojunction effect
between chromium and titania species was not observed.2, the searched heterojunction effect
between chromium and titania species was not observed.