Results 1 to 10 of about 26,989 (181)

Phosphate removal from real wastewater using maghemite beads [PDF]

The Holistic Approach to Environment, 2019
The present study aimed at research of phosphate adsorption onto poly(vinyl-alcohol) PVA alginate beads in comparison with maghemite modified beads from wastewater. The characterisation of material was performed by Fourier transform infrared spectroscopy
Marjana Simonič
doaj   +3 more sources

Atomic-Scale Molecular Dynamics Modeling of Iron Oxides: Surface Properties and Methodologies [PDF]

Molecules
Iron oxides, including hematite (α-Fe2O3), magnetite (Fe3O4), and maghemite (γ-Fe2O3), play central roles in catalysis, corrosion, environmental remediation, magnetic nanotechnology, and energy storage.
Nikoleta Ivanova, Hassan Chamati
doaj   +2 more sources

Chitosan - Carbon Nanotube - Maghemite nanocomposites – A Flexible Negative Dielectric Constant Material [PDF]

Progress in Physics of Applied Materials, 2023
In this work, the nanocomposites of chitosan containing carbon nanotubes (CNT) and maghemite nanoparticles have been prepared by solution casting method. Techniques such as Raman spectroscopy, SEM, TEM, dielectric relaxation spectroscopy, and VSM studies
Saravanan Annamalai, Radha Perumal Ramasamy   +1 more
doaj   +1 more source

Catecholamine Coated Maghemite Nanoparticles for Asphaltene Adsorption/Desorption Process [PDF]

Journal of Chemical and Petroleum Engineering, 2021
In this study, a nano-layer polydopamine (PDA) coated superparamagnetic maghemite nanoparticles (MNPs) was applied to investigate the asphaltene adsorption-desorption behavior using a model solution.
Behruz Mirzayi, Ali Nematollahzadeh, Mohsen Rasouli, Hadi Seyyedbagheri   +3 more
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Combustion method combined with sonochemical step for synthesis of maghemite-supported catalysts for the hydrogenation of 2,4-dinitrotoluene

Catalysis Communications, 2021
Maghemite particles were synthesized by using a combined combustion method and sonochemical step. Maghemite was used as carrier to prepare supported Pt and Pd catalysts after deposition via a sonochemical step.
Viktória Hajdu, Gábor Muránszky, Masahiro Hashimoto, Ferenc Kristály, Milán Szőri, Béla Fiser, Zoltán Kónya, Béla Viskolcz, László Vanyorek   +8 more
doaj   +1 more source

Effect of Heat-Treatment Temperatures on Magnetite Oxidation in 20SiO2.50FeO.30CaO Glass Ceramic Prepared by the Sol-Gel Method [PDF]

Iranian Journal of Materials Science and Engineering, 2023
The effect of different heat-treatment temperatures on the magnetic, crystallization, and structural properties of 20SiO2.50FeO.30CaO (mol%) glass ceramics was studied.
parisa rastgoo oskoui, mohammad rezvani, Abbas kianvash   +2 more
doaj  

AC Susceptibility Studies under DC Fields in Superspinglass Nanomaghemite-Multiwall Carbon Nanotube Hybrid

Magnetochemistry, 2021
Magnetic properties of maghemite (γ-Fe2O3) nanoparticles grown on activated multiwall carbon nanotubes have been studied by alternating current (AC) magnetic susceptibility experiments performed under different temperatures, frequencies, and applied ...
Juan A. Ramos-Guivar, F. Jochen Litterst, Edson C. Passamani   +2 more
doaj   +1 more source

Multifunctional Magnetic Nanocolloids for Hybrid Solar-Thermoelectric Energy Harvesting

Nanomaterials, 2021
Present environmental issues force the research to explore radically new concepts in sustainable and renewable energy production. In the present work, a functional fluid consisting of a stable colloidal suspension of maghemite magnetic nanoparticles in ...
Elisa Sani, Maria Raffaella Martina, Thomas J. Salez, Sawako Nakamae, Emmanuelle Dubois, Véronique Peyre   +5 more
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New Phenotype and Mineralization of Biogenic Iron Oxide in Magnetotactic Bacteria

Nanomaterials, 2021
Many magnetotactic bacteria (MTB) biomineralize magnetite crystals that nucleate and grow inside intracellular membranous vesicles originating from invaginations of the cytoplasmic membrane.
Walid Baaziz, Corneliu Ghica, Jefferson Cypriano, Fernanda Abreu, Karine Anselme, Ovidiu Ersen, Marcos Farina, Jacques Werckmann   +7 more
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Hydrophilic Copolymers with Hydroxamic Acid Groups as a Protective Biocompatible Coating of Maghemite Nanoparticles: Synthesis, Physico-Chemical Characterization and MRI Biodistribution Study

Pharmaceutics, 2023
Superparamagnetic iron oxide nanoparticles (SPION) with a “non-fouling” surface represent a versatile group of biocompatible nanomaterials valuable for medical diagnostics, including oncology.
Hana Charvátová, Zdeněk Plichta, Jiřina Hromádková, Vít Herynek, Michal Babič   +4 more
doaj   +1 more source