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

作     者：黄满莲 郭凯 满振勇 陈昊鸿 杨昕昕 许钫钫 赵景泰 

作者机构：Key Laboratory of Transparent Opto-Functional Inorganic Materials Shanghai Institute of Ceramics Chinese Academy of Sciences Graduate School of Chinese Academy of Sciences 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2011年第29卷第9期

页      面：830-836页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：Project supported by the National Natural Science Foundation of China (50990304) State "973" Project (2007CB936704) 

主　　题：yttrium oxide morphology yttrium citrate precursor rare earth compound phosphor 

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.