Polymer matrix templated synthesis: Manganese zinc ferrite nanoparticles preparation

Noor, Siti Hajar Mohd; Yaacob, Iskandar Idris; Ang, Bee Chin

doi:10.1007/s12541-013-0090-2

Cited by 6 publications

(1 citation statement)

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“…Properties, such as morphology, are influenced by the preparation conditions. [ 17 ] Several techniques have been established for the production of MnFe 2 O 4 NPs, such as the solid‐state reaction method, [ 18 ] combustion, [ 19 ] combustion sol–gel, [ 20 ] micro‐emulsion, [ 21 ] hydrothermal methods ( [ 22 ] ), polymer matrix‐mediated synthesis, [ 23 ] chemical precipitation, and sol–gel techniques. [ 24 ] MnFe 2 O 4 is unstable in air at high temperatures, and Mn 2+ ions on the surface oxidize to form Mn 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional manganese ferrite nanoparticles: Tuning their efficiency for aniline polymerization and polyaniline nanocomposites for boosting adsorption of organic dyes

Gemeay

El‐Helaly

Elsheikh

et al. 2022

J Chinese Chemical Soc

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The uniqueness of this work is the comparison of manganese ferrites/ polyaniline (Mn x Fe 3 À x O 4 /PANI) produced using K 2 S 2 O 8 as an oxidant for aniline with the efficacy of spinel manganese ferrite with various Mn 2+ ratios for the polymerization of aniline. The structural and morphological properties of the nanocomposites were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) techniques. XRD results confirmed the formation of a single-phase cubic spinel structure with a lattice constant of approximately 8.3 Å. The surface enriched by Mn 2+ exhibited an enhanced valence of +3 and +4, increased lattice oxygen content, facilitated ferrite reduction, and improved the oxidative performance of Fe 3+ . The saturation magnetization decreased with an increase in Mn +2 ratios and PANI contents. The nanocomposites exhibited excellent adsorption of Lanaset Brown B dye, which was investigated as a model textile dye. Various adsorption capacities (q max ) for the nanocomposites were calculated in a range of 122.39-215 mg/ g, depending on the synthesis conditions. Optimization parameters, such as pH, adsorbent dose, and initial concentration, as well as reusability, were described. The Langmuir isotherm is a better model for describing the adsorption process of the nanocomposites. An evaluation of thermodynamic parameters suggests the sorption process is feasible, spontaneous, and endothermic. K E Y W O R D S adsorption, green synthesis, Lanaset Brown B dye, Mn x Fe 3Àx O 4 /PANI, polyaniline nanocomposites

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