Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

Novel preparation and properties of magnesioferrite nanoparticles

“…This conclusion might find evidence from a progressive shift of the diffraction peaks of MgFe 2 O 4 to higher Bragg's angle with the rise in the G/N ratio. The intensities of the (2 2 0), (4 4 0) and (5 1 1) planes are more sensitive to the cations on tetrahedral, octahedral and the oxygen ion parameters respectively [28,29,36]. Table 1 shows the observed intensities of the above three planes.…”

“…But the augmentation in the G/N ratio above this limit resulted in slight increase in the peak height of Mg ferrite phase. The enhancement of ferrite formation due to the increase in the ratio of G/N had been attributed to an effective increase in the mobility of Mg and Fe cations taking part in the ferrite formation depending upon the rise in the reaction temperature [28,29,36]. This conclusion might find evidence from a progressive shift of the diffraction peaks of MgFe 2 O 4 to higher Bragg's angle with the rise in the G/N ratio.…”

“…Beside these methods, there are several attempts using auto-ignited combustion reactions [26,27]. Among them, a glycine-nitrate process (GNP) is applicable, a very simple, low-cost, fast method for preparing various nano-crystalline ferrites [28,29]. One goal of modern ferrite research and development has been to identify simpler processing schemes that do not rely upon high temperature treatments for inducing solid-state reactions [30].…”

Al and PEG Effect on Structural and Physicochemical Properties of CoFe2O4

“…[14][15][16][17] Cobalt ferrite is a partially inverse spinel with formula (Co x Fe 1-x )[Co 1-x Fe 1+x ]O 4 , formed by oxygen atoms in a closed packing structure where, Co 2+ and Fe 3+ occupy either tetrahedral or octahedral sites. [18][19][20][21][22] Several researchers have reported on Ti, Y, Gd, Pr, Zn, Ni and Dy doped cobalt ferrite. [23][24][25][26][27][28] The present work is focused on the effects of Al 3+ doping on the structural, morphological and elastic properties of aluminium ion doped cobalt ferrite obtained via sol-gel method.…”

Characterization and evaluation of Fe2O3/Al2O3 oxygen carrier prepared by sol–gel combustion synthesis

“…Different from all the aforementioned preparation methods, solution combustion synthesis is relying on a self-sustained combustion reaction between metal nitrates as the oxidizer and various organic fuels (e.g., citric acid and glycine) to produce nano-scaled metal oxide powders [16][17][18]. Due to the solution mixture of the precursors used and the exothermicity of the combustion reaction, this method displays prominent advantages than other "wet chemistry" methods for its rapidity and simplicity of the synthesizing process, lower energy requirement and molecular mixing of the precursors [19].…”