Red-emitted Y₂O₃:Eu³⁺ nanophosphor coated on a mica flake (Y₂O₃:) or on TiO₂ having a rutile crystalline mica flake (Y₂O₃:[email protected]) has been prepared by an electrostatic interaction with the wet-coating method for the purpose of a pigment with luminescent and gloss properties. Aggregated Y₂O₃:Eu³⁺, prepared by the template method, was dispersed into nanosol by a controlled bead-mill wet process. The (+) charged Y₂O₃:Eu³⁺ nanosol was effectively coated on the (-) charged mica flake (MF) or the TiO₂/mica flake (TMF) by an electrostatic interaction between the Y₂O₃:Eu³⁺ nanoparticles and MF or TMF at pH 6–8. The coating factors of Y₂O₃:[email protected] were also studied and optimized by controlling the pH, stirring temperature, calcination temperature, and coating amount of Y₂O₃:Eu³⁺. The Y₂O₃:Eu³⁺ was partially coated and optimized on the MF or TMF surface with a coating coverage of about 40–50% or 60–70%, respectively. Y₂O₃:[email protected] and Y₂O₃:[email protected] were exhibiting the luminescent property of a red color under a 254 nm wavelength, and had a color purity of over 95% according to CIE chromaticity coordinates. These materials were characterized by X-ray diffraction, FE-SEM, zeta potential, and a fluorescence spectrometer. These materials with luminescent and gloss properties prepared in this work potentially meet their applications for security purposes.

中文翻译：

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Y2O3：Eu3 +纳米荧光粉涂覆的云母或TiO2 /云母作为红色发光珍珠颜料：涂覆因子，发光和光泽性能

已经通过如下方法制备了涂覆在云母片（Y ₂ O ₃：)或具有金红石型结晶云母片（Y ₂ O ₃：[受电子邮件保护]）的TiO ₂上的红色发射的Y ₂ O ₃：Eu ³⁺纳米磷光体。为了具有发光和光泽特性的颜料的目的，通过湿涂法进行静电相互作用。通过模板法制备的聚集的Y ₂ O ₃：Eu ³⁺通过控制的珠磨机湿法分散到纳米溶胶中。（+）带电的Y ₂ O ₃：Eu ³⁺通过Y ₂ O ₃：Eu ³⁺纳米粒子与MF或TMF在pH 6-8之间的静电相互作用，将纳米溶胶有效地涂覆在（-）带电云母片（MF）或TiO ₂ /云母片（TMF）上。还通过控制pH值，搅拌温度，煅烧温度和Y ₂ O ₃：Eu ^3+的涂覆量来研究和优化Y ₂ O ₃：[受电子邮件保护]的涂覆因子。Y ₂ O ₃：Eu ³⁺被部分涂覆在MF或TMF表面并进行了优化，涂层覆盖率分别约为40％至50％或60％至70％。ÿ ₂O ₃：[受电子邮件保护的]和Y ₂ O ₃：[受电子邮件保护的]在254 nm波长下显示红色的发光性质，并且根据CIE色度坐标具有超过95％的色纯度。这些材料通过X射线衍射，FE-SEM，ζ电势和荧光光谱仪表征。这些在工作中制备的具有发光和光泽特性的材料可能会满足其出于安全目的的应用。