层状双氢氧化物
结晶度
共沉淀
材料科学
离子
降水
兴奋剂
摩尔比
分析化学(期刊)
核化学
化学
无机化学
氢氧化物
复合材料
催化作用
生物化学
物理
光电子学
有机化学
色谱法
气象学
作者
Yufeng Chen,Yefeng Bao,Zhipeng Yu,Guangchao Yang,Ling Zhang
标识
DOI:10.1016/j.jlumin.2016.08.060
摘要
A series of Tb-doped MgAl–NO3 layered double hydroxides (LDHs) with Mg2+/(Al3++Tb3+) molar ratios ranging from 1.0 to 4.0 were synthesized through co-precipitation method at room temperature. X-ray diffraction (XRD) results indicated that the crystallinity of all the Tb-doped samples presented a single phase corresponding to LDHs. SEM measurement suggested that all the samples have similar morphologies. Fluorescence spectra show strong green emissions at 490 and 544 nm, ascribed to the 5D4→7F6 and 5D4→7F5 transition of Tb3+, respectively. This result revealed that the MgAl–NO3 LDH system was favorable for the green emissions of Tb3+ ions.
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