Co—Fe Prussian Blue Analogue Intercalated into Diamagnetic Mg—Al Layered Double Hydroxides

Abstract

A heterostructure of diamagnetic magnesium-aluminium layered double hydroxides (Mg-Al LDHs) and photomagnetic cobalt-iron Prussian Blue analogue (Co-Fe PBA) was designed, synthesized and then designated as LDH-PB. The cyanide-bridged Co-Fe PBA was two-dimensionally intercalated into the Mg-Al LDH template by the stepwise anion exchange method. LDH-PB showed ferrimagnetic properties with in-plane antiferromagnetic exchange interactions, as well as small photo-induced magnetization by visible light illumination due to the low dimensional structures and the characteristic photo-induced electronic states of the mixed valence of Fe

A Prussian blue analog-based copper–aluminum layered double hydroxide for cesium removal from water: fabrication, density functional theory-based molecular modeling, and the adsorption mechanism

“…The functional groups present in the synthesized composite material were analyzed by FTIR spectroscopy. The broad and intense absorption peak observed in the region of 3000–3700 cm −1 is attributed to the stretching vibration of –OH, while the broad absorption peak observed near 1351 cm −1 is due to the stretching vibration of –NO 3 , 23 indicating the successful generation of nitrate-intercalated layered double hydroxide. In comparison to the FTIR spectrum of CuAl-LDH, the FTIR spectrum of PBA@CuAl-LDH showed new peaks, including a characteristic peak of –CN stretching vibration at 2102 cm −1 (Fig.…”