Controllable synthesis of hierarchical nanostructures of CaWO4 and SrWO4 via a facile low-temperature route

Controllable synthesis of hierarchical nanostructures of CaWO4 and SrWO4 via a facile low-temperature route
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通过简便的低温路线可控合成 CaWO4 和 SrWO4 的分级纳米结构

DOI:
10.1016/j.materresbull.2008.04.008
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发表时间:
2009-01
影响因子:
5.4
通讯作者:
Qian, X. F.
Qian, X. F.
中科院分区:
材料科学2区
文献类型:
--
作者:
Zhu, J.;Yuan, Y. P.;Gong, Q.;Chen, Z.;Qian, L. W.;Qian, X. F.

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采用微乳介导的方法合成了cawo4和srwo4纳米结构。通过对反应物浓度、反应时间、温度等基本实验参数的控制,分别得到了不同形态的哑铃状、珊瑚状、棒状和枝晶状产物。在不同的实验条件下,基于表面活性剂的自组装,提出了这些独特形貌的可能形成机制。不同形貌的cawo4样品表现出不同的光致发光特性。采用x射线粉末衍射、透射电子显微镜、场发射扫描电子显微镜和发光光谱等方法对产物进行了表征。
CaWO4and SrWO4nanostructures have been synthesized via a simple microemulsion-mediated route. With careful control of the fundamental experimental parameters including the concentration of reactants, the reaction time and the temperature, the products with different morphologies of dumbbell, coral, rod and dendrite have been obtained, respectively. The possible formation mechanism of these unique morphologies has been proposed based on surfactant self-assembly under different experimental conditions. The as-synthesized CaWO4samples with various morphologies exhibit different photoluminescence properties. X-ray powder diffraction, transmission electron microscopy, field-emission scanning electron microscopy, and luminescence spectroscopy were used to characterize these products.
钨酸锶纳米结构的合成及其光致发光性能
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