Influence of ultrasound and cation substitution on the intercalation of organic anions to the Mg3/Al1 layered double hydroxide

The Mg 3 /Al 1 and Mg 3-x M x /Al 1 (M = Mn, Co, Ni, Cu, Zn) layered double hydroxides (LDHs) were synthesized using sol-gel synthesis technique. The intercalation with different organic anions (formate (HCOO − ), acetate (CH 3 COO − ), oxalate (C 2 O 4 2− ), tartrate (C 4 H 6 O 4 2− ) and citrate (C 6 H 5 O 7 3− )) using ion exchange approach was investigated. The influence of ultrasound and cation substitution on the intercalation of organic anions to the Mg 3 /Al 1 LDH has been investigated. The obtained results indicated that ultrasound has a positive effect in some cases for the intercalation of organic anions into the Mg 3 /Al 1 LDH system. On the other hand, the substitution of magnesium by transition metals has negligible effect on the intercalation process. The synthesized and intercalated LDHs were characterized by X-ray diffraction (XRD) analysis, infrared (FTIR) spectroscopy, Raman spectroscopy, thermal (TG-DTG-DCS) analysis and scanning electron microscopy (SEM).