This work presents the results of the synthesis and comprehensive investigation of superparamagnetic magnetite–alginate nanocomposites (Fe₃O₄/Alg) obtained by the method of co-precipitation followed by calcium-induced ionic crosslinking. The formation of the composite structure and preservation of the crystalline magnetite phase were confirmed by FTIR spectroscopy and X-ray diffraction analysis. Electron microscopy studies demonstrated a uniform distribution of Fe₃O₄ nanoparticles with sizes below 10–15 nm within the alginate matrix, as well as suppression of magnetically induced aggregation. The scientific novelty of the study lies in establishing the relationship between the structural organization of the alginate matrix and the stabilization of superparamagnetic magnetite nanoparticles, ensuring simultaneous preservation of the magnetic properties, phase purity of Fe₃O₄, and high functional availability of alginate carboxylate groups. It was shown that the composite is formed according to the "crystalline magnetic core–amorphous polymer shell" model, creating favorable conditions for the selective binding of heavy metal ions. The obtained solid Fe₃O₄/Alg composite can be considered as a promising magnetically controlled sorbent for the removal of various pollutants from aqueous media.
| Mualliflar | G. Abilkosimova, D. Aronbaev, Аронбаев С. |
|---|---|
| Jurnal | Samarqand davlat universiteti ilmiy tadqiqotlar axborotnomasi |
| Nashr sanasi | 2026-07-01 |
| Jild | 2 |
| Son | 3 |
| Betlar | 56-64 |
| DOI | 10.59251/2181-3973.2025.v1.138.1.3954 |
DOI: 10.59251/2181-3973.2025.v1.138.1.3954 · Maqolaning asl sahifasi
This article provides a comprehensive assessment of the impact of irrigation on the state of reclamation of geological systems. The study analyzed processes such as soil salinization, rising groundwater levels…
This study is devoted to the synthesis and comprehensive study of nanostructured photocatalytic materials based on lanthanum-modified zinc oxide prepared by sol-gel and sol-gel auto ignition (SGAI) methods. It was found…
In this study, SrTiO₃ perovskite nanoparticles were synthesized using the sol–gel method. Strontium nitrate (Sr(NO₃)₂) and titanium isopropoxide were employed as precursors in a 1:1 molar ratio, while dimethyl sulfoxide…
In this paper, the effect of iron (Fe) doping concentration on the morphology, optical and electronic properties, and photocatalytic activity of ZnO nanostructures is comprehensively studied. The results show a…
This manuscript draft summarizes the gravitational lensing effect in the Bocharova-Bronnikov-Melnikov-Bekenstein (BBMB) spacetime. The analysis includes the photon equations of motion, strong-field deflection…
«Ziziphora clinopodioides» Lam. is a medicinally valuable aromatic plant distributed across Central Asia, including Uzbekistan's mountain regions (Samarkand, Kashkadarya, Zomin). Despite its traditional use, the…
This article presents the synthesis, physicochemical characterization and structural analysis of a new complex compound based on quercetin (3,3',4',5,7-pentahydroxyflavone) and Mo³⁺ ions. The complex was synthesized in…
This study presents a theoretical and numerical investigation of one-dimensional radial suspension filtration through a cylindrical filter medium under constant-pressure conditions. A mathematical model of the…
In this paper, we study the second-order Hardy inequality with the periodic and anti-periodic boundary conditions. We establish the corresponding necessary and sufficient conditions for the inequality to hold.
A methodology has been developed for optimizing the identification, recognition, and classification of micro-objects using redundant image information structures - histological, morphological, fractal, correlation, and…
Samarqand davlat universiteti ilmiy tadqiqotlar axborotnomasi — barcha maqolalar