Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 16, Issue 21, Pages 2102-2109Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b517980g
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Two kinds of amino acids (L-cysteine and L-cystine, represented as L-CySH and L-Cys respectively) have been intercalated into MgAl layered double hydroxides by coprecipitation. The structure and composition of the intercalated materials have been characterized by X-ray diffraction (XRD) and elemental analysis. Furthermore, the oxidation of L-CySH intercalated LDHs by, respectively, hydrogen peroxide and bromine has been studied. Based on the FT-Raman, FT-IR, and C-13 MAS NMR spectra data, it has been found that H2O2 oxidized the interlayer L-CySH to cystine, while the oxidation product of intercalated L-CySH by Br-2 was cysteic acid regardless of the bromine/cysteine ratio, which is different from the bulk reaction. Therefore, this layered material may have prospective application as the basis of a novel molecular reactor'' for confined chemical reactions.
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