含硝酸盐和碳酸盐阴离子的钴基层状双氢氧化物及CoII/A1III比值n = 2,3,4的光学比较研究

2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2021-09-05 DOI:10.1109/NAP51885.2021.9568631

Y. Pashkevich, Vladimir Gnezdiov, D. Vieira, R. Babkin, Irina M. Lukienko, J. Vieira, D. Wulferding, P. Lemmens, A. Salak

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引用次数: 0

摘要

研究了Co^{2+}/A1^{3+}$比值对Co- al层状双氢氧化物(LDH)拉曼光谱和光吸收光谱的影响。通过对拉曼光谱中氢键频率和光吸收光谱中声子重复谱的对比分析发现，增大$Co^{2+}/A1^{3+}$比值，硝酸LDH中的阴离子交换能力增强，而碳酸盐LDH中的阴离子交换能力受到抑制。

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Comparative Optic Studies of Cobalt-Based Layered Double Hydroxides with Nitrate and Carbonate Anions and CoII/A1III ratio n = 2, 3, 4

The variations of Raman and optic absorption spectra of Co-Al layered double hydroxides (LDH) intercalated with nitrate and carbonate anions have been studied as a function of the $Co^{2+}/A1^{3+}$ ratio. It was revealed from the comparative analysis of the hydrogen bond frequencies in Raman spectra and the phonon repetition lines in optic absorption spectra that the increasing $Co^{2+}/A1^{3+}$ ratio results in an enhancement of the anion exchange ability in nitrate LDH and in a suppression of the ability in carbonate LDH.

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2021 IEEE 11th International Conference Nanomaterials: Applications & Properties (NAP)

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