A Fe3O4@Nico@Ag nanocatalyst for the hydrogenation of nitroaromatics

Green synthesis of Fe3O4@SiO2‐Ag magnetic nanocatalyst using safflower extract and its application as recoverable catalyst for reduction of dye pollutants in water

“…In this step, Fe 3 O 4 @SiO 2 ‐Ag nanocomposite was prepared via an in situ reduction method. We also demonstrate the high catalytic efficiency of the Fe 3 O 4 @SiO 2 ‐Ag nanocomposite for azo dye reduction reactions and for the reduction of aromatic compounds by sodium borohydride . In addition, the obtained Fe 3 O 4 @SiO 2 ‐Ag catalyst can be efficiently recovered from a reaction solution using external magnetic fields and reused for many cycles without significant loss of either material or catalytic activity.…”

Copper Immobilized on Isonicotinic Acid Hydrazide Functionalized Nano‐Magnetite as a Novel Recyclable Catalyst for Direct Synthesis of Phenols and Anilines

“…When the INH was loaded on the surface of Fe 3 O 4 , the stretching bond of ν (C=O) and ν (CÀ N) of isonicotinic acid hydrazide appeared at 1635 and 1400 cm À 1 , respectively. [46] The Fe 3 O 4 -NH 2 bond peak is appeared at 586 cm À 1 ( Figure 1C). [47] As compared to Figure. 1 C, there are the stretching bonds of ν (C=O) and ν (CÀ N) for Fe 3 O 4 @INH@Cu at 1632 and 1401 cm À 1 , respectively ( Figure 1D).…”

“…In the spectra of Fe 3 O 4 @INH and Fe 3 O 4 @INH@Cu, besides the absorption peaks of the Fe−O bond, the absorption band of N−H stretching vibration at 3435 and 3440 cm −1 appeared, respectively. When the INH was loaded on the surface of Fe 3 O 4 , the stretching bond of ν (C=O) and ν (C−N) of isonicotinic acid hydrazide appeared at 1635 and 1400 cm −1 , respectively . The Fe 3 O 4 ‐NH 2 bond peak is appeared at 586 cm −1 (Figure C) .…”

Enhanced antibacterial performance of Fe3O4–Ag and MnFe2O4–Ag nanocomposites

“…The detailed experimental procedure for all products is given in our previous reports [16][17][18][19][20][21] O salts were taken in 1:2 ratio and dissolved in 50 ml of distilled water in a three-neck round-bottom flask and their homogeneous solution was prepared using magnetic stirring. Then 0.2 g of HA was added to this mixture under constant stirring.…”