Superior magnetic properties of Ni ferrite nanoparticles synthesized by capping agent-free one-step coprecipitation route at different pH values

Influence of process parameters on the size, morphology, and structure of magnetic nanoparticles obtained by chemical methods

“…This method was used by Arévalo, et al (2017) with a great variety of precursors, such as polymeric surfactants, polyvinyl alcohol, and others, and they achieved a high level of reliability in the synthesis of particles with nanometric dimensions and spinel structure, which is characteristic of magnetite. Other researchers obtained similar results when using this method with different precursors (Houshiar, et al, 2014;Iranmanesh, et al, 2018;Raeisi-Shahraki, et al, 2012).…”

Environmental Assessment of Large Scale Production of Magnetite (Fe3O4) Nanoparticles via Coprecipitation

“…The nanoparticles after the coprecipitation process are dispersed in aqueous media due to the large surface of hydroxyl groups [7]. The reaction pH value represents a key factor that controls structural morphology (e.g., crystallinity, homogeneity) and particle size of the material [8]. Tao et al [9] reported several drawbacks in classical coprecipitation, including uncontrollability of the size, size distribution and the phase control of resultant nanoparticles.…”

NiFe2O4@B,N,F-tridoped CeO2 (NFTDNC): a mesoporous nanocatalyst in the synthesis of pyrazolopyranopyrimidine and 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives and as an adsorbent

“…It revealed a sharp soft ferromagnetic hysteresis with a saturation magnetization of 2.66 emu g −1 , less than the reported saturation magnetization value of NiFe 2 O 4 . 31 The occurrence of a single peak near zero of the magnetic field in the dM/dH versus H curve further established the soft magnetic nature of the synthesized mesoporous nanocomposite. Moreover, it also indicated the single magnetic domain type nature of the NFTDNC.…”

“…[28][29][30] Nickel ferrite, a unique magnetic spinel material has small hysteresis, tunable bandgap (∼1.7 eV) resulting in efficient solar light utilization, chemical durability and high magnetic separation. 31,32 The domino multicomponent reaction (MCR) inevitably engrossed the organic chemists as it not only encompasses the merits of multicomponent reactions but also addresses their demerits such as more wastage and lower yield. It makes the process benign by curtailing the amount of solvent, cost and energy during the reaction.…”

“…28–30 Nickel ferrite, a unique magnetic spinel material has small hysteresis, tunable bandgap (∼1.7 eV) resulting in efficient solar light utilization, chemical durability and high magnetic separation. 31,32…”