Synthesis and photoluminescence of Eu-doped Zn/Al layered double hydroxides

被引：45

作者：

Chen, Yufeng ^{[1
,2
]}

Zhou, Songhua ^{[1
]}

Li, Fan ^{[2
]}

Chen, Yiwang ^{[1
,2
]}

机构：

[1] Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China

[2] Nanchang Univ, Inst Polymers, Nanchang 330031, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2010年 / 45卷 / 23期

关键词：

ANION-EXCHANGE; CRYSTAL-STRUCTURE; ION-EXCHANGE; IN-SITU; ZN; GD; LN; IMMOBILIZATION; INTERCALATION; OXIDATION;

D O I：

10.1007/s10853-010-4725-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Eu-doped ZnAl-layered double hydroxides (ZnAl-LDHs) with various Zn2+/(Al3++Eu3+) molar ratios from 1:1, 2:1, 3:1, to 4:1 were first synthesized by the coprecipitation method at room temperature and the Eu3+/Al3+ molar ratio of 0.06 was almost maintained. The obtained solids were characterized by powder X-ray diffraction (XRD), photoluminescent spectrum (PL), scanning electron microscope (SEM), infrared spectroscopy (IR), and thermogravimetric (TG) analysis. XRD results show that the crystallinity of the Eu-doped products gradually was improved when the Zn2+/(Al3++Eu3+) molar ratio was higher than 2. The photoluminescent spectra of the Eu-doped ZnAl-LDHs are described by the well-known (5) D (0)-(7) F (J) transition (J = 1, 2, 3, 4) of Eu3+ ions with the strongest emission for J = 2.

引用

页码：6417 / 6423

页数：7

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