New Layered Rare-Earth Hydroxides with Anion-Exchange Properties

被引：186

作者：

Geng, Fengxia ^{[1
,2
,3
]}

Xin, Hao ^{[1
,2
]}

Matsushita, Yoshitaka ^{[4
]}

Ma, Renzhi ^{[1
,2
]}

Tanaka, Masahiko ^{[4
]}

Izumi, Fujio ^{[5
]}

Iyi, Nobuo ^{[1
,2
]}

Sasaki, Takayoshi ^{[1
,2
,3
]}

机构：

[1] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

[2] Natl Inst Mat Sci, Nanoscale Mat Ctr, Tsukuba, Ibaraki 3050044, Japan

[3] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

[4] Natl Inst Mat Sci, Beam Line Stn, Sayo, Hyogo 6795148, Japan

[5] Natl Inst Mat Sci, Quantum Beamline Ctr, Tsukuba, Ibaraki 3050044, Japan

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2008年 / 14卷 / 30期

基金：

日本科学技术振兴机构;

关键词：

anions; ion exchange; layered compounds; luminescence; rare-earth elements;

D O I：

10.1002/chem.200800127

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis of a new series of layered hydroxides based on rare-earth elements with a composition of RE(OH)(2.5)Cl-0.5 center dot 0.8H(2)O (RE: Eu, Tb, etc.) through the homogeneous precipitation of RECl3 center dot xH(2)O with hexamethylenetetramine (HMT). Rietveld analysis combined with direct methods revealed an orthorhombic layered structure comprising a positively charged layer of [RE(OH)(2.5)(H2O)(0.8)](0-5+) and interlayer Cl- ions. The Cl- ions were readily exchangeable for various anions (NO3-, SO42-, dodecylsulfonate, etc.) at ambient temperature. Photoluminescence studies showed that the compounds display typical RE 31 emission. With rare-earth-based host layers and tunable interlayer guests, the new compounds may be of interest for optoelectronic, magnetic, catalytic, and biomedical materials.

引用

页码：9255 / 9260

页数：6

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