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- W2019297629 abstract "MCM-41 materials were modified with Cr, Fe, Co and Ti and characterized by ICP, XRD, N2 adsorption, UV–Vis DRS and TPR. Their photo-catalytic activity was evaluated for the degradation of Acid Orange 7 (AO7) in aqueous suspensions irradiated by artificial UV–Vis and visible light. The results showed that the Cr-modified catalysts exhibited the highest activity under visible light. The presence of Cr6+ highly dispersed on the internal surface of the MCM-41 structure would have a significant influence on the photo-activity. Thus, the lack of a notable increment in the activity when the Cr loading was duplicated is probably due to the increased presence of inactive Cr3+ species. Upon the TiO2 loading, an increase in the degradation was not observed. It is suggested that the Cr3+ species, as Cr2O3 clusters and/or α-Cr2O3 nano-particles, could avoid the desired heterojunction between Cr6+ and titania species." @default.
- W2019297629 created "2016-06-24" @default.
- W2019297629 creator A5000386245 @default.
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- W2019297629 creator A5047909702 @default.
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- W2019297629 date "2011-08-01" @default.
- W2019297629 modified "2023-10-18" @default.
- W2019297629 title "MCM-41-based materials for the photo-catalytic degradation of Acid Orange 7" @default.
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- W2019297629 doi "https://doi.org/10.1016/j.cattod.2011.05.003" @default.
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