Catalytic properties of nanocomposites based on cobalt ferrites dispersed in sol–gel silica

Investigations on structural and magnetic properties of cobalt ferrite/silica nanocomposites prepared by the coprecipitation method

“…These results correspond to the production of well crystallized cobalt ferrite. It is worth mentioning that a similar phase was developed at higher temperatures (600-1000 1C) as reported by other workers [38][39][40][41][42]. Moreover, at 300 1C (2 h), the elimination of water molecules, Si-OH and volatiles in the samples occurred resulting in the densification of CoFe 2 O 4 /SiO 2 , which is confirmed by XRD.…”

Catalytic oxidation of aqueous sulfide in the presence of ferrites (MFe2O4, M=Fe, Cu, Co)

“…Moreover, ferrites can be isostructurely doped with different transition metals, e.g. Cu 2+ , Co 2+ , Mn 2+ , Ni 2+ , allowing a fine tuning of the catalytic/redox activity [17][18][19][20], electrical [21,22] and magnetic properties [19,23]. Moreover, ferrites show some potential advantages such as relatively low cost, improved chemical and thermal stability (compared to enzymes), excellent control of the structure allowing fining tuning of the redox properties (compared to modified carbon based catalysts that are complex structures).…”

Facile synthesis and characterization of magnetic MnFe2O4/CNT nanocomposites

“…Several parameters such as nanoparticle size, purity, morphology, crystallinity and their distribution are important factors influencing the physical properties of nanoparticles [15][16][17][18][19][20][21][22]. These parameters can be affected by their production methods.…”

“…These parameters can be affected by their production methods. Among the different methods such as sol-gel [18], hydrothermal [19,23], reverse micelle [15] and microwave irradiation [14], direct co-precipitation is the most appropriate method to produce MnFe 2 O 4 nanoparticles due to its low cost, easy control of the synthesis conditions and high efficiency [24].…”