Preparation and properties of nickel ferrite (NiFe2O4) nanoparticles via sol–gel auto-combustion method

Structural, thermal, dielectric and magnetic properties of NiFe2O4 nanoleaf

“…These bonds are corresponding to NiFe 2 O 4 nanoparticles and are represented as due to tetrahedral and octahedral modes of NiFe 2 O 4 respectively. The peak at 2335 cm À1 is expected to be due to H-O-H bending vibration of the free or absorbed water [36]. The band which occurs at 1409 cm À1 is associated with NO 3 À trace of nitrates.…”

Cost effective preparation and characterization of nanocrystalline nickel ferrites (NiFe2O4) in low temperature regime

“…Various chemical routes have been already adopted by many authors to synthesize nanocrystalline NiFe 2 O 4 including a sonochemical process, co-precipitation, sol-gel, shock wave, reverse micelle and hydrothermal methods (Chen and He, 2001;Sagar, 2011;Sivakumar et al, 2009;Prasad and Gajbhiye, 1998;Shi et al, 1999;Liu et al, 2001;Kale et al, 2004;Zhou et al, 2005). Among them gel combustion process using hydroxyl carboxylic acids (citric acid) as chelating agents is experimentally proved to be simple and cost effective (Sutka and Mezinskis, 2012;Sivakumar et al, 2011;Barati and Seyyed Ebrahimi, 2008). The principle of this method is based on the distribution of metal ions within the polymeric network to avoid the segregation.…”

Magnetic nickel ferrite nanoparticles as an efficient catalyst for the preparation of polyhydroquinoline derivatives under microwave irradiation in solvent-free conditions

“…Nickel ferrite MNPs are inexpensive, air-stable, magnetically separable, and economical catalysts [41][42][43][44]. There are very limited and there are less references about catalytic properties of nickel ferrite MNPs [45][46][47].…”