کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1261444 | 971812 | 2011 | 5 صفحه PDF | دانلود رایگان |
An efficient and convenient one-step process was developed for synthesizing new effective red luminous materials through ordered mesoporous γ-alumina assembling with Eu3+. Employing P123 as a structure-directing agent and hydrochloric acid, citric acid as pH adjustor, ordered mesoporous γ-alumina was fabricated by simple sol-gel method. The pore structure was characterized by X-ray diffraction (XRD), N2 adsorption-desorption isotherms and transmission electron microscopy (TEM). The as-synthesized γ-aluminas had narrow pore-size distribution (5–7 nm), large surface area (246 m2/g) and high thermal stability (750–1000 °C). The luminous property of materials was characterized by Photoluminescence (PL) spectra. The γ-Al2O3:Eu3+ materials had efficient luminescence, and the emission strength was related to the content of Eu3+.
Journal: Journal of Rare Earths - Volume 29, Issue 8, August 2011, Pages 732-736