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The magnetization of cobalt ferrite nanocubes of similar size, but with varying Co/Fe ratio, is extensively characterized on atomistic and nanoscopic length scales. Combination of X-ray diffraction, Mössbauer spectroscopy, magnetization measurements and polarized small-angle neutron scattering (SANS) reveals that a lower amount of cobalt leads to an enhanced magnetization. At the same time, magnetic SANS confirms no or negligible near-surface spin disorder in these highly crystalline, homogeneously magnetized nanoparticles, resulting in an exceptionally hard magnetic material with high coercivity.
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http://dx.doi.org/10.1107/S1600576722010287 | DOI Listing |
Int J Biol Macromol
June 2025
Nanomaterials Research Group (NRG), Physics Division, PINSTECH, Islamabad 44000, Pakistan.
The textile sector poses global pollution through the discharge of organic dyes and antibiotic-resistant pathogens present in the environment have a significant impact on the quality of water resources. The present work demonstrates different concentrations (2 and 4 wt%) of starch (St) and a fixed amount of polyacrylic acid (PAA) doped tin ferrite (SnFeO) nanocubes (NCs) prepared by co-precipitation route. The proposed approach has the potential to degrade rhodamine B (RhB) dye, oxygen evolution reaction (OER) activity, and resist the growth of Gram-negative multiple drug resistant (MDR) Escherichia coli (E.
View Article and Find Full Text PDFEnviron Res
October 2024
Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India. Electronic address:
In this study, we report the development of a novel CuO(3 wt%)/CoFeO nanocubes (NCs) photocatalyst through simple co-precipitation and wet impregnation methods for the efficient photocatalytic degradation of triclosan (TCS) pollutants. Initially, rod-shaped bare CoFeO was synthesized using a simple co-precipitation technique. Subsequently, CuO was loaded in various percentages (1, 2, and 3 wt%) onto the surface of bare CoFeO nanorods (NRs) via the wet impregnation method.
View Article and Find Full Text PDFJ Hazard Mater
September 2023
State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China. Electronic address:
As the typical toxic and hazardous gases, volatile organic compounds (VOCs) and hydrogen sulfide (HS) pose a threat to the environment and human health. The demand for real-time detection of VOCs and HS gases is growing in many application to protect human health and air quality. Therefore, it is essential to develop advance sensing materials for the construction of effective and reliable gas sensors.
View Article and Find Full Text PDFNat Protoc
March 2023
Istituto Italiano di Tecnologia, Genoa, Italy.
Magnetic nanoparticles are increasingly used in medical applications, including cancer treatment by magnetic hyperthermia. This protocol describes a solvothermal-based process to prepare, at the gram scale, ferrite nanoparticles with well-defined shape, i.e.
View Article and Find Full Text PDFNano Lett
January 2023
Institute for Electrical Measurement Science and Fundamental Electrical Engineering and Laboratory for Emerging Nanometrology (LENA), TU Braunschweig, Hans-Sommer-Str. 66, 38106 Braunschweig, Germany.
Immunoassays exploiting magnetization dynamics of magnetic nanoparticles are highly promising for mix-and-measure, quantitative, and point-of-care diagnostics. However, how single-core magnetic nanoparticles can be employed to reduce particle concentration and concomitantly maximize assay sensitivity is not fully understood. Here, we design monodisperse Néel and Brownian relaxing magnetic nanocubes (MNCs) of different sizes and compositions.
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