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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Strong photoluminescence and sensing performance of nanosized Ca(0.8)Ln(0.1)Na(0.1)WO(4) (Ln = Sm,Eu) compounds obtained by the dry 'top-down' grinding method
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Strong photoluminescence and sensing performance of nanosized Ca(0.8)Ln(0.1)Na(0.1)WO(4) (Ln = Sm,Eu) compounds obtained by the dry 'top-down' grinding method

机译：通过干燥“自上而下”研磨方法获得的纳米Ca（0.8）LN（0.1）Na（0.1）（0.1）（0.1）（LN = SM，EU）化合物的强光发光和感测性能

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摘要

Two lanthanide doped nanosystems Ca(0.8)Ln(0.1)Na(0.1)WO(4) (Ln = Eu, Sm), denoted as Eu@CWO and Sm@CWO, were prepared by a "top-down" approach in three simple steps: activation, miniaturization by high-energy milling, and further calcination. The solids were thoroughly characterized by X-ray powder diffraction (XRPD) and Scanning-electron microscopy (SEM). Also, analyses of the structure of the compounds and the impact of milling on the crystallite shape and size were carried out through Rietveld refinements. Solid-state photoluminescence was studied in terms of excitation, emission, lifetimes (tau(obs)) and europium-quantum yields. Finally, the Eu@CWO sample was employed as a potential water-stable chemical sensor towards toxic cations, showing a quenching effect in the presence of iron ions.
机译：通过“自上而下”方法在三个中制备了两种掺杂纳米纳米（0.1）Na（0.1）Na（0.1）Na（0.1）WO（4）（LN = EU，SM），以“自上而下”方法表示为欧盟@ CWO和SM @ CWO 简单的步骤：激活，高能量铣削的小型化，进一步煅烧。 通过X射线粉末衍射（XRPD）和扫描 - 电子显微镜（SEM）彻底地表征固体。 此外，通过RIETVELD改进来分析化合物的结构和研磨对微晶形状和尺寸的影响。 在激发，发射，寿命（TAU（OB））和铕 - 量子产率方面研究了固态的光致发光。 最后，欧盟@ CWO样品作为潜在的水稳定化学传感器朝向有毒阳离子，在铁离子存在下显示出猝灭效果。

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