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采用一步水热合成了稀土Eu掺杂的镁铝水滑石层状化合物(MgAlEuCO3-LDHs)。探讨了水热温度和水热时间对水滑石晶体结构的影响。利用XRD、SEM、FT-IR和荧光光谱对样品的组成和性质进行表征。XRD、FT-IR结果表明:当n(Mg2+):n(Al3+):n(Eu3+)=2:1:0.15时120℃、4h水热处理后即可得到结晶完好的层状MgAlEuCO3-LDHs,Eu3+成功地插层组装进入LDHs层板。荧光光谱测试发现掺杂稀土Eu3+离子的MgAlEuCO3-LDHs具有Eu3+的5D0→7FJ特征光谱。
A one-step hydrothermal synthesis of rare earth Eu-doped Mg-Al hydrotalcite layered compound (MgAlEuCO3-LDHs). The effects of hydrothermal temperature and hydrothermal time on the crystal structure of hydrotalcite were discussed. The composition and properties of the samples were characterized by XRD, SEM, FT-IR and fluorescence spectroscopy. The results of XRD and FT-IR indicate that crystalline MgAlEuCO3-LDHs and Eu3 + can be obtained after hydrothermal treatment at 120 ℃ for 4h with n (Mg2 +): n (Al3 +): n Successfully intercalated into the LDHs laminate. Fluorescence spectroscopy showed that the rare earth doped Eu3 + ions of MgAlEuCO3-LDHs have Eu3 + 5D0 → 7FJ characteristic spectra.