Porous magnetic manganese oxide nanostructures: Synthesis and their application in water treatment

Electrochemical detection of As(III) through mesoporous MnFe2O4 nanocrystal clusters by square wave stripping voltammetry

“…With the high absorption capacity of nanostructure, the superparamagnetic materials can disperse well in the solution due to the absence of any residual magnetization without the external applied magnetic field, avoiding the typical aggregation problems of ferromagnetic materials [18,19]. And it was found that the redox couple of Fe(III)/Fe(II) may have some relevance for the reduction of As(III) [20].…”

Mesoporous MnFe2O4 nanocrystal clusters for electrochemistry detection of lead by stripping voltammetry

“…With the high adsorption capacity of nanostructure, the superparamagnetic materials can disperse well in the solution due to the absence of any residual magnetization without the external applied magnetic field, avoiding the typical aggregation problems of ferromagnetic materials [20,21]. With a high adsorption performance, the MnFe 2 O 4 NCs combined with uniform mesoporous structure and small constituent nanocrystals (about 8-12 nm in size) even provide a synergistic effect for enhanced adsorption performance toward As(III) [22].…”

Preparation and application of a magnetic composite (Mn3O4/Fe3O4) for removal of As(III) from aqueous solutions

“…Nevertheless, the instability of these magnetic nanoparticles represents a problem, as magnetite is highly susceptible to oxidation when exposed to the atmosphere. To face this problem, magnetite nanoparticles are being combined with other compounds or covered by an active compound [3][4][5] . In both cases the magnetic property of magnetite is preserved.…”

“…The use of powder magnetic manganese oxide composites as adsorbents may combine the excellent adsorptive and oxidation properties of manganese oxide with good performance recovery of magnetic separation techniques. Nevertheless, very few works have been focusing on magnetic manganese oxide composites to be used in water treatment 4,5 . Moreover, in these published works, the magnetic composites are often synthesized by precipitation of manganese oxide, when in presence of magnetite, by using relatively costly oxidants, such as potassium permanganate and hydrogen peroxide.…”