Synthesis and characterization of organic-inorganic hybrid mesoporous anion-exchange resins for perrhenate (ReO4-) anion adsorption

被引：90
作者：
Lee, B
Bao, LL
Im, HJ
Dai, S [1 ]
Hagaman, EW
Lin, JS
机构：
[1] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA
[2] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA
来源：
LANGMUIR | 2003年 / 19卷 / 10期
关键词：
D O I：
10.1021/la026960b
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Organic-inorganic hybrid mesoporous anion-exchange resins based on either pure silica or organosilica support materials were prepared and tested for the adsorption of perrhenate (ReO4-) anions in aqueous solutions. The prepared samples were characterized using nitrogen adsorption-desorption measurements, Fourier transform infrared spectroscopy, Raman spectroscopy, small-angle X-ray scattering, Si-29 cross-polarization/magic-angle-spinning nuclear magnetic resonance, and scanning transmission electron microscopy. Among the prepared samples, the hybrid mesoporous anion-exchange resins functionalized with N-((trimethoxysilyl)propyl)-N,N,N-tri-n-butylammonium ions showed higher affinities for perrhenate ions than did the resins functionalized with N-((trimethoxysilyl)propyl)-N,N,N-trimethylammonium ions. The enhancement by the bulky ammonium functional ligand is consistent with Hofmeister selectivity.
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收藏
页码：4246 / 4252
页数：7
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