Comparative optic studies of cobalt-based layered double hydroxides with nitrate and carbonate anions and Co II/A1 III ratio n = 2, 3, 4
- Pashkevich, Yurii
- Gnezdiov, Vladimir
- Vieira, Daniel E. L.
- Babkin, Roman
- Lukienko, Irina
- Vieira, Joaquim M.
- Wulferding, Dirk
- Lemmens, Peter
- Salak, Andrei N.
Publication date
October 2023
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
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 Co2+/Al3+ 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 Co2+/Al3+ ratio results in an enhancement of the anion exchange ability in nitrate LDH and in a suppression of the ability in carbonate LDH.publishe
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