Magnetic Nanoparticles and Nanocomposites for Bioanalytical and Biomedical Purposes

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Nanospecies".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 430

Special Issue Editors


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Guest Editor
Department of Chemistry and Biochemistry, Clarkson University, Potsdam, NY, 13699 USA
Interests: biosensors; electrochemistry
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Special Issue Information

Dear Colleagues,

The past decade has demonstrated an increasing interest in the development of new magnetic systems for bioanalytical and biomedical purposes. Due to their magnetic properties, such systems are very well controllable, resulting in the development of accurate approaches for testing many human biomarkers in clinical diagnostics and for the controlled treatment of some diseases and the analysis of its efficacy in medicine.

This Special Issue covers a wide spectrum of usage of magnetic nanoparticles and nanocomposites in bioanalytical and biomedical applications. Research papers, reviews, and short communications focused on the synthesis, characterization, and bioapplication of such materials are welcome. Special attention will be paid to state-of-the-art research related to the point-of-care usage of the developed methods by the end-point users.

Dr. Oleh Smutok
Prof. Dr. Evgeny Katz
Guest Editors

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Keywords

  • magnetic nanoparticles
  • magnetic composites
  • synthesis
  • characterization
  • bioanalytical use
  • biomedical application

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Published Papers (1 paper)

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Research

14 pages, 5299 KiB  
Article
Synthesis and Antibacterial Evaluation of Silver-Coated Magnetic Iron Oxide/Activated Carbon Nanoparticles Derived from Hibiscus esculentus
by Müslüm Güneş, Erdal Ertaş, Seyhmus Tumur, Parvin Zulfugarova, Fidan Nuriyeva, Taras Kavetskyy, Yuliia Kukhazh, Pavlo Grozdov, Ondrej Šauša, Oleh Smutok, Dashgin Ganbarov and Arnold Kiv
Magnetochemistry 2025, 11(7), 53; https://doi.org/10.3390/magnetochemistry11070053 (registering DOI) - 21 Jun 2025
Abstract
The increasing prevalence of antimicrobial resistance alongside the pharmacological limitations and adverse effects associated with conventional antibiotics necessitates the development of novel and efficacious antimicrobial agents. In this study, magnetic iron oxide nanoparticles (MIONPs) were synthesized via a chemical co-precipitation method. Activated carbon [...] Read more.
The increasing prevalence of antimicrobial resistance alongside the pharmacological limitations and adverse effects associated with conventional antibiotics necessitates the development of novel and efficacious antimicrobial agents. In this study, magnetic iron oxide nanoparticles (MIONPs) were synthesized via a chemical co-precipitation method. Activated carbon (AC) derived from Hibiscus esculentus (HE) fruit was coated onto the nanoparticle surfaces to fabricate MIONPs/HEAC nanocomposites. To augment their antimicrobial properties, silver ions were chemically reduced and deposited onto the MIONPs/HEAC surface, yielding MIONPs/HEAC@Ag nanocomposites. Comprehensive characterization of the synthesized nanocomposites was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometry (VSM), dynamic light scattering (DLS), and zeta potential analysis. DLS measurements indicated average particle sizes of approximately 122 nm and 164 nm for MIONPs/HEAC and MIONPs/HEAC@Ag, respectively. Saturation magnetization values were determined to be 73.6 emu/g for MIONPs and 65.5 emu/g for MIONPs/HEAC. Antibacterial assays demonstrated that MIONPs/HEAC@Ag exhibited significant inhibitory effects against Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 25923, with inhibition zone diameters of 11.50 mm and 13.00 mm, respectively. In contrast, uncoated MIONPs/HEAC showed negligible antibacterial activity against both bacterial strains. These findings indicate that MIONPs/HEAC@Ag nanocomposites possess considerable potential as antimicrobial agents for biomedical applications, particularly in addressing infections caused by antibiotic-resistant bacteria. Full article
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