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Nanoparticles with SiO2 coating were synthesized to have a cubic iron core. These were found to have saturation magnetization very close to the highest possible value of any iron-containing nanoparticles and the bulk iron saturation magnetization. The in vitro toxicology studies show that they are highly biocompatible and possess better MRI contrast agent potential than iron oxide NPs.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8955863 | PMC |
http://dx.doi.org/10.3390/ma15062228 | DOI Listing |
Adv Funct Mater
March 2025
Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, 2730 SW Moody Avenue, Portland, Oregon, 97201, USA.
Despite notable advancements, the significantly improved yet suboptimal heating efficiency of current magnetic nanoparticles hinders the effectiveness of systemically delivered magnetic hyperthermia in reducing tumor size or halting growth. Addressing this challenge, the seed-and-growth thermal decomposition method has been developed to synthesize cobalt-doped iron oxide nanoparticles featuring a cubical bipyramid morphology and consisting of both magnetite and maghemite phases within their nanostructure. They possess an exceptional specific absorption rate of 14,686 ± 396 W g Fe, inducing a temperature rise of 3.
View Article and Find Full Text PDFPeerJ
August 2025
Department of Medical Education, Gansu Provincial Maternity and Child-care Hospital, Gansu, Lanzhou, China.
Background: The association between maternal iron/zinc intake and the risk of low birth weight (LBW) in infants is still unclear. This study aimed to investigate the effects of iron and zinc daily intake preconception and during pregnancy on the risk of delivering LBW babies and to assess whether there is an interaction between iron and zinc intake on the risk of LBW.
Methods: A nested case-control study was performed, including 565 cases and 7,510 controls in Lanzhou City, China.
Int J Biol Macromol
September 2025
Department of Chemistry, University of Karachi, 75270, Pakistan.
In this study, a novel nano-CoFeO-immobilized Saccharomyces cerevisiae yeast nanobiocomposite (CFO-yeast) was synthesized by a physical immobilization method for ultrasonically enhanced photo-Fenton degradation of methylene blue (MB) from aqueous medium. CFO-yeast was comprehensively characterized by UV-Visible spectroscopy, FTIR, SEM, BET, pH and XRD before and after immobilization that revealed pure nano-CoFeO (CFO) possessed cubic spinel crystal system having 19.0 nm average crystallite size whereas after immobilization the size reduced to 14.
View Article and Find Full Text PDFJ Hazard Mater
August 2025
Groundwater Characterization and Remediation Division, Center for Environmental Solutions and Emergency Response, U S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, OK 74820, USA.
Operations at a former battery recycler resulted in harmful concentrations of lead and other contaminants in groundwater. We report on a long-term monitoring study of a permeable reactive barrier (PRB) strategically deployed to intercept and treat groundwater using limestone and organic material (cattle manure and wood chip). The PRB neutralized groundwater acidity and created reducing conditions to drive sulfate reduction to sulfide by native bacteria.
View Article and Find Full Text PDFSci Technol Adv Mater
August 2025
Institute for Materials Research, Tohoku University, Sendai, Japan.
This paper examines the phonon dispersion and static local atomic distortion of iron-manganese-based Elinvar alloys using high-resolution inelastic X-ray scattering, magnetization, neutron diffraction, and neutron total scattering. In this study, nonlinear phonon dispersion was observed for a transverse acoustic mode near zone center, associated with elastic constants, over a wide temperature range along the to X (310) points of the face-centered cubic system, indicating lattice instability coupled with tetragonal distortions in the long-wavelength limit. Bulk magnetization and neutron diffraction measurements suggest that the conventional ferromagnetic magnetostriction scenario is not the origin of Elinvar characteristics.
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