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- W1974833462 abstract "Nanostructured materials such as MCM-41 modified with rare earth ions have been studied due to their potential for a variety of applications. Rare earth trivalent ions in some solid compounds emit light at characteristic wavelengths due to infra 4f or inter 4f–5d transitions. The MCM-41 and AlMCM-41 mesoporous materials were synthesized by hydrothermal treatment using cethyltrimethylammonium as template, and then calcined at 500 °C in presence of air. The obtained materials were impregnated with Eu(III) ions using europium nitrate solution in ethanol with equivalent concentrations of 5, 10, and 15% in mass, followed by calcination at 500 °C under nitrogen atmosphere. The Eu-containing products were characterized by thermogravimetric analysis (TGA), X-ray diffraction, and photoluminescence spectroscopy. The emission spectra were recorded at room temperature. For the Eu–MCM-41 and EuAl–MCM-41 samples, intense photoluminescence were observed in the visible region, with maximum intensity centered at 620 nm." @default.
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- W1974833462 date "2004-07-01" @default.
- W1974833462 modified "2023-09-27" @default.
- W1974833462 title "Synthesis, characterization, and luminescent properties of MCM-41 and AlMCM-41 mesoporous materials containing Eu(III) ions" @default.
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- W1974833462 doi "https://doi.org/10.1016/j.jallcom.2003.11.075" @default.
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