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Exfoliation and immobilization of anionic iron porphyrin in layered double hydroxides

2003; Elsevier BV; Volume: 264; Issue: 1 Linguagem: Inglês

10.1016/s0021-9797(03)00374-6

1095-7103

Fernando Wypych, G.A. Bubniak, Matilte Halma, Shirley Nakagaki,

Mesoporous Materials and Catalysis

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.