Exfoliation and immobilization of anionic iron porphyrin in layered double hydroxides.
Mg-Al layered double hydroxide (LDH) intercalated with glycinate anions was synthesized through co-precipitation and exfoliated in formamide and the single-layer suspension was reacted with an aqueous iron porphyrin (FeTDFSPP) solution. The new composite was characterized by powder X-ray diffraction, UV-vis, FTIR, and electron paramagnetic spectroscopies and thermal analyses (simultaneous TG/DSC). The analyses demonstrated that glycinate anions continue to be intercalated and the anionic iron porphyrin is adsorbed at the surface of the layered double hydroxide crystals.
Wypych
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F
Departamento de Química, Universidade Federal do Paraná, CP 19081, 81531-990 Curitiba, PR, Brazil. wypych@quimica.ufbr.br
Bubniak
G A
GA
Halma
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M
Nakagaki
S
S