Results 51 to 60 of about 26,989 (181)

Light‐Induced Structural Reorganization of Fe Centers Unlocks High Efficiency of Visible‐Light Photo‐Fenton Water Cleaning Catalyst

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Bimetallic Cu and Fe oxide species supported on porous silica with interparticle mesoporosity act as efficient photo‐Fenton‐like catalysts under visible light. Photogenerated electrons drive the Cu2+/Cu1+ redox cycle. Part of Cu1+ is responsible for the regeneration of the Fe3+/Fe2+ cycle at neutral pH. Light irradiation additionally induces structural
Andraž Šuligoj, Ksenija Maver, Iztok Arčon, Goran Dražić, Nataša Zabukovec Logar, Albin Pintar, Nataša Novak Tušar   +6 more
wiley   +1 more source

Magnetic Nanoparticles in Human Cervical Skin

Frontiers in Medicine, 2019
Magnetic iron oxide nanoparticles, magnetite/maghemite, have been identified in human tissues, including the brain, meninges, heart, liver, and spleen.
Kari Murros, Joonas Wasiljeff, Elena Macías-Sánchez, Damien Faivre, Damien Faivre, Lauri Soinne, Jussi Valtonen, Marjatta Pohja, Pekka Saari, Lauri J. Pesonen, Johanna M. Salminen, Johanna M. Salminen   +11 more
doaj   +1 more source

A Hydroflux Synthesis for Single Crystal α‐NaFeO2, β‐NaFeO2, and α‐Fe2O3

European Journal of Inorganic Chemistry, EarlyView.
High‐quality single crystals of iron oxides and sodium orthoferrites important for energy storage materials are accessed through a single‐step low‐temperature synthetic route in a hydroxide eutectic. Sodium‐containing transition metal oxides are candidates for earth‐abundant energy storage materials.
Richard E. Wilson
wiley   +1 more source

STUDY OF GOLD ENCAPSULATION IN MAGHEMITE DURING MICROWAVE ROASTING OF FLOTATION CONCENTRATE [PDF]

, 2020
The article presents the results of a study of the encapsulation of gold in maghemite during microwave processing of refractory gold-bearing concentrate. The magnetic separation of the MW calcine showed the concentration of gold in the magnetic fraction.
Fuzaylov, O.U., Sanakulov, K.
core  

XAS signatures of Am(III) adsorbed onto magnetite and maghemite [PDF]

, 2016
Trivalent americium was adsorbed on magnetite and maghemite under similar chemical conditions and the local environment probed by EXAFS spectroscopy. In both samples, partially hydrated Am(III) binds the surface but slightly different surface complexes ...
Finck, N., Radulescu, I., Huber, F., Geckeis, H., Radulescu, L., Lützenkirchen, J., Schlegel, M. L., Rabund, T., Nedel, Sorin, Rothmeier, M., Heberling, F., Schild, D., Dideriksen, K., Nedel, S., Rabung, T., Dideriksen, Knud   +15 more
core   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

As(V) remediation using electrochemically synthesized maghemite nanoparticles

, 2009
Maghemite nanoparticles were electrochemically synthesized from environmentally benign solutions in ambient conditions and utilized to remediate As(V) from aqueous solution. The average size and surface area of the maghemite nanoparticles were controlled
Jung, Haeryong, Park, Hosik, Myung, Nosang V., Choi, Heechul   +3 more
core   +1 more source

Mecanismos químicos e mineralógicos de transformação da magnesioferrita de solo derivado de tufito, da região do Alto Paranaíba, MG Chemical and mineralogical mechanisms related to the transformation of magnesioferrite, in a soil forming on tuffite in Alto Paranaíba, MG

Química Nova, 2009
Magnetic soils forming on tuffite of the region of Alto Paranaíba, Minas Gerais, Brazil, usually contain iron-rich spinels exceptionally rich in magnesium and titanium. In this work, samples of the magnetically separated portion from the sand fraction of
Fernando Dias da Silva, Antonio Taranto Goulart, Paulo Rogério da Costa Couceiro, José Domingos Fabris   +3 more
doaj   +1 more source

Long‐Term Corrosion of Carbon‐Steel Casing Used in Deep Geological Radioactive Waste Repository

Materials and Corrosion, EarlyView.
Fifty mots 6‐year study of carbon steel corrosion in a deep geological repository (Bure, France). Three corrosion patterns were identified, driven by local conditions. Minimal corrosion layer thickness growth suggests limited corrosion progression under most conditions.
Mahado Saïd Ahmed, Delphine Neff, Annabelle Vernouillet, Xavier Bourbon, Didier Crusset, Gaëlle Charrier, Valérie Maillot, Philippe Dillmann   +7 more
wiley   +1 more source

SiO₂-PVA-Fe(acac)₃ Hybrid Based Superparamagnetic Nanocomposites for Nanomedicine: Morpho-textural Evaluation and In Vitro Cytotoxicity Assay

Molecules, 2020
A facile sol-gel route has been applied to synthesize hybrid silica-PVA-iron oxide nanocomposite materials. A step-by-step calcination (processing temperatures up to 400 °C) was applied in order to oxidize the organics together with the iron ...
Ana-Maria Putz, Cătălin Ianăși, Zoltán Dudás, Dorina Coricovac, Claudia (Farcas) Watz, Adél Len, László Almásy, Liviu Sacarescu, Cristina Dehelean   +8 more
doaj   +1 more source