Raman spectroscopy study of layered-double hydroxides containing magnesium and trivalent metals

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• 作者：Manuel Mora ; Cé ; sar Jimé ; nez-Sanchidriá ; n ; José ; Rafael Ruiz ; ^{qo1ruarj@uco.es" class="auth_mail}
• 关键词：Raman spectroscopy ; Layered double hydroxides ; Hydrotalcite
• 刊名：Materials Letters
• 出版年：1 April, 2014
• 年：2014
• 卷：120
• 期：Complete
• 页码：193-195
• 全文大小：357 K

文摘

We examined the Raman spectra for LDHs containing Mg²⁺ and a trivalent metal (Al³⁺, Ga⁺ or In⁺) with an Mg²⁺/M³⁺ ratio of 3. The Raman spectra exhibited very strong signals at ca. 1060 cm^-1, 540 cm^-1 and 150 cm^-1 that were ascribed to symmetric stretching of interlayer carbonate ions, symmetric stretching of Mg-O-Mg bonds in Mg₃(OH) structural units and stretching of M-O bonds, respectively. The spectra additionally contained various weaker signals suggesting that the LDHs studied consist solely of Mg₃(OH) and Mg(OH)₂M(III)O structural units.