Thermo-Raman spectroscopic study of the natural layered double hydroxide manasseite

被引：32
|
作者：
Frost, Ray L. [1 ]
Reddy, B. Jagannadha [1 ]
机构：
[1] Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Res Program, Brisbane, Qld 4001, Australia
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2006年 / 65卷 / 3-4期
基金：
澳大利亚研究理事会;
关键词：
manasseite; sjogrenite; stitchtite; iowaite; desautelsite; takovite; hydrotalcite; Raman spectroscopy;
D O I：
10.1016/j.saa.2005.12.007
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Raman and thermo-Raman spectroscopy have been applied to study the natural hydrotalcite manasseite Mg6Al2(OH)(16)(CO3)(.)4H(2)O. Hydrogen bond distances calculated using a Libowitzky-type empirical function varied between 2.61 and 3.00 angstrom. Stronger hydrogen bonds were formed by water units as compared to the hydroxyl units. Thermo-Raman spectroscopy enabled the identification of bands attributed to the hydroxyl units. Two Raman bands at 1062 and 1058 cm(-1) are assigned to symmetric stretching modes of the carbonate anion. Thermal treatment shifts these bands to higher wavenumbers indicating a change in the carbonate bonding. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：553 / 559
页数：7
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