Morphology controllable synthesis of yttrium oxide-based phosphors from yttrium citrate precursors

A novel yttrium citrate-templated conversion method for morphology controlled synthesis of Y2O3 microspheres, microflowers and microsheets was reported for the first time. The precursors with controllable morphologies were synthesized with a homogenous precipitation method in aqueous solution withou...

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Bibliographic Details
Published in:Journal of rare earths 2011-09, Vol.29 (9), p.830-836
Main Author: 黄满莲 郭凯 满振勇 陈昊鸿 杨昕昕 许钫钫 赵景泰
Format: Article
Language:English
Subjects:
Citrates
Microspheres
Morphology
phosphor
Precursors
rare earth compound
Rare earth metals
Synthesis
Yttrium
yttrium citrate precursor
Yttrium oxide
光致发光特性
前体
可控
形貌
控制合成
柠檬酸钠
氧化钇
荧光粉
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Summary:A novel yttrium citrate-templated conversion method for morphology controlled synthesis of Y2O3 microspheres, microflowers and microsheets was reported for the first time. The precursors with controllable morphologies were synthesized with a homogenous precipitation method in aqueous solution without any surfactant. Y2O3 samples with well-preserved morphological architectures were obtained by a subse-quent thermal transformation strategy. The chemical formula of the precursor was identified and a two-stage growth mechanism was proposed. The effects of the aging time, reaction temperature, reactant concentration and molar ratio of yttrium nitrate to sodium citrate were discussed. The photoluminescence properties of the Y2O3：Eu3＋ microspheres, microflowers and microsheets prepared were also studied.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(10)60551-0