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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (16): 1865-1873. 上一篇    下一篇

研究论文

一锅甘氨酸/水热法合成具有发光性能的NdOHCO3纳米盘及三维纳米结构

谢劲松1,2,3，吴庆生*,1,4   

  1. (1同济大学化学系 上海 200092)
    (2合肥学院化学与材料工程系 合肥 230022)
    (3合肥学院粉体与能源材料重点实验室 合肥 230022)
    (4上海市分子催化和功能材料重点实验室 复旦大学 上海 200433)
  • 投稿日期:2010-11-17 修回日期:2011-03-25 发布日期:2011-04-13
  • 通讯作者: 吴庆生 E-mail:qswu@tongji.edu.cn
  • 基金资助:

    国家重大基础研究项目(973项目);国家自然科学基金项目;上海市纳米项目

One-pot Glycine-hydrothermal Fabrication of NdOHCO3 Nanodisks and Their Three-dimensional Architectures with Luminescence Property

Xie Jinsong1,2,3 Wu Qingsheng*,1,4   

  1. (1 Department of Chemistry, Tongji University, Shanghai 200092)
    (2 Department of Chemistry and Materials Engineering, Hefei University, Hefei 230022)
    (3 Key Laboratory of Powder and Energy Materials, Hefei University, Hefei 230022)
    (4 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433)
  • Received:2010-11-17 Revised:2011-03-25 Published:2011-04-13
  • Contact: WU Qing-Sheng E-mail:qswu@tongji.edu.cn

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在不添加其它模板剂下, 利用甘氨酸与氧化钕直接水热反应制备出直径在200～300 nm, 厚度为50～100 nm的NdOHCO3盘状结构. 研究了各种实验参数, 如反应温度、时间、前驱体的量以及表面活性剂的影响, 初步探讨了这种形貌结构的生长机制. 另外, 实验表明通过延长反应时间或者添加表面活性剂聚乙烯吡咯烷酮(k-30), 盘状结构能够组装形成新颖的三维结构. 经适当煅烧后, 这种盘状结构可以原位转化为六方晶相的Nd2O3, 这为制备特殊结构和形貌的Nd2O3提供了一条简单而有效的途径. 产物的光致发光光谱表明, 这种盘状以及组装结构的产物都具有较好的荧光性质, 与以往报道不同是, 其在450 nm处有个较强宽的发射峰, 这可能与其特殊的形貌有关.

关键词: 水热反应, NdOHCO3, 纳米盘, 自组装, 光致发光性质

A kind of uniform NdOHCO3 nanodisks, with an average diameter about of 200～300 nm and outstanding thickness in range of 50～100 nm was fabricated via a template-free hydrothermal method, utilizing Nd2O3 and glycine as reagents. Various experimental conditions, such as the reaction temperature, time, the molar ratios of the starting reagents and the influence of surfactants, were studied. The possible growth mechanism was proposed. In addition, by means of extending reaction time or adding another surfactant polyvinylpyrrolidone (k-30) in the reaction system, novel 3D nano-superstructures could be formed by these nanodisks assembled. After proper heat treatment, as-obtained NdOHCO3 nanodisks could in situ turn into Nd2O3 with similar morphology, which provided a simple, effective approach to prepare special structure and morphology Nd2O3. The photoluminescence spectra of the products indicated the NdOHCO3 nanodisks and their self-assembly architectures have intensive and broad band centered at around 450 nm, which are possibly associated with these special morphologies.

Key words: hydrothermal fabrication, NdOHCO3, nanodisks, self-assembly, photoluminescence property