Characterization of TiO2: Ni2+:Eu3+:W6+ powders and potential use as photocatalyst
Abstract
In this work, Ni2+, Eu3+, and W6+ doped TiO2 powders were prepared, these powders can be used as potential photocatalyst for the CO2 and NOx reduction. The sol-gel synthesis method was used, starting from titanium tetrabutoxide, ethanol, and acetyl- acetone as precursors. Europium oxide, nickel, and tungsten nitrates as doping salts. The powders of Ni2+, Eu3+, and W6+ doped TiO2 powders were heat-treated at 600 °C for 2 hours. The powders were characterized by the FT-IR technique that reveals the characteristic absorption band of Ti-O located at 600 cm-1, The X-Ray Diffraction (XRD) technique elucidated that the powders crystallized in the anatase phase. Scanning Electron Microscopy showed that the powders are composed of spherical particles of approximately 543 nm and agglomerates close to 20 micrometers. Finally, by the technique of ultraviolet-visible spectroscopy, it was determined that the powders absorb in the region of 393-593 nm.
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References
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