Morphology controllable synthesis of yttrium oxide-based phosphors from yttrium citrate precursors
来源期刊：JOURNAL OF RARE EARTHS2011年第9期
论文作者：黄满莲 郭凯 满振勇 陈昊鸿 杨昕昕 许钫钫 赵景泰
文章页码：830 - 836
摘 要：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.
黄满莲1,2，郭凯1,2，满振勇1，陈昊鸿1，杨昕昕1，许钫钫1，赵景泰1
1. Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences2. Graduate School of Chinese Academy of Sciences
摘 要：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.
关键词：
