Results 31 to 40 of about 26,989 (181)

Kinetics of Thermal Transformation of Synthetic Al-Maghemites into Al-Hematites

Revista Brasileira de Ciência do Solo
Maghemite (γ-Fe2O3) and hematite (α-Fe2O3) are important iron oxides in Brazilian soils derived from basalt. Maghemite can transform into hematite when exposed to high temperatures. However, isomorphic substitution (e.g., Al3+) may largely influence this
Adriele Galeti Nonaka, Marcelo Augusto Batista, Antonio Carlos Saraiva da Costa, Tadeu Takeyoshi Inoue, Taiana Gabriela Moretti Bonadio, Ivan Granemann de Souza Junior   +5 more
doaj   +1 more source

TiO₂–Fe₃O₄ Composite Systems—Preparation, Physicochemical Characterization, and an Attempt to Explain the Limitations That Arise in Catalytic Applications

Applied Sciences, 2022
In this work, a composite material based on titanium(IV) oxide and iron(II,III) oxide was prepared using mechanothermal method. The obtained composite system was thoroughly characterized using techniques such as scanning electron microscopy, X-ray powder
Rafal Krakowiak, Robert Frankowski, Kinga Mylkie, Dariusz T. Mlynarczyk, Marta Ziegler-Borowska, Agnieszka Zgoła-Grześkowiak, Tomasz Goslinski   +6 more
doaj   +1 more source

Consistent grain size distribution of pedogenic maghemite of surface soils and Miocene loessic soils on the Chinese Loess Plateau

, 2009
There is agreement that ultrafine maghemite grains (\u3c100 nm) are responsible for the magnetic enhancement of Chinese loess. Recent studies show that grain size distribution of ultrafine pedogenic maghemite grains within the aeolian sequences on the ...
R. Egli, Song, Yougui, Egli, Ramon, J.S. Nie, Y.G. Song, J.W. King, King, John W., Nie, Junsheng, RAMON EGLI, Yougui Song, Junsheng Nie, JOHN W. KING, J. S. Nie, Y. G. Song   +13 more
core   +1 more source

Inductively Expandable Supraparticles as Microscopic Force Generators for Remote Mechanical Actuation

Advanced Materials, EarlyView.
This study demonstrates the combination of magnetic nanoparticles and functional blowing agents into supraparticles. Upon induction heating, they actuate via rapid gas generation or extensive volume expansion. These supraparticles lift up to 25 000 times their own mass and rapidly open cured epoxy resins, providing a versatile strategy for fast micron ...
Leoni Luthardt, Stephan Müssig, Robert Luxenhofer, Karl Mandel   +3 more
wiley   +1 more source

Maghemite in Brazilian Iron Ores: Quantification of the Magnetite-Maghemite Isomorphic Series by Χ-ray Diffraction and the Rietveld Method, and Confirmation by Independent Methods

, 2021
Maghemite (γ-Fe2O3) is a mineral formed from magnetite oxidation at low temperatures, an intermediate metastable term of the magnetite to hematite oxidation and could be mixed with both.
Otávio Gomes, Renata Hiraga, Reiner Neumann   +2 more
core   +1 more source

Magnetic Water Cleaning of Estrogens via Tight yet Dynamic Binding to Nanoparticles

Advanced Science, EarlyView.
Micropollution is one of the big challenges humanity faces with estrogen hormones being emerging pollutants of concern. Here, a supramolecular design strategy is presented that generates a simple nano‐adsorbent material to magnetically remove low‐concentrated estrogens from water.
Lukas Müller, Philip Maier, Dustin Vivod, Wenke Müller, Nikolaj Lopatik, Theresa Maria Schichtl, Julia Fröhlich, Irene Kraus, Marten Huck, Wieland Corts, Clodomiro Cafolla, Lukas Ruhm, Henrik Gaß, Johannes Voß, Jiwon Byun, Linda Rockmann, Guido Grundmeier, Kislon Voïtchovsky, Hans‐Georg Steinrück, Erdmann Spiecker, Sevim Dalabasmaz, Monika Pischetsrieder, Eike Brunner, Ralf Schweins, Dirk Zahn, Marcus Halik   +25 more
wiley   +1 more source

Grafting TRAIL through Either Amino or Carboxylic Groups onto Maghemite Nanoparticles: Influence on Pro-Apoptotic Efficiency

Nanomaterials, 2021
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNF cytokine superfamily. TRAIL is able to induce apoptosis through engagement of its death receptors DR4 and DR5 in a wide variety of tumor cells while sparing ...
Hanene Belkahla, Andrei Alexandru Constantinescu, Tijani Gharbi, Florent Barbault, Alexandre Chevillot-Biraud, Philippe Decorse, Olivier Micheau, Miryana Hémadi, Souad Ammar   +8 more
doaj   +1 more source

Patient‐Personalized Membrane‐Coated Magnetic Nanovectors: Probing the Biomimetic Interface for Targeted Tumor Theranostics

Advanced NanoBiomed Research, EarlyView.
This study presents a label‐free spectroscopic platform to evaluate membrane protein conformation on patient‐derived glioblastoma cell membrane‐coated magnetic nanovectors. This work demonstrates that preserving membrane protein integrity during nanoparticle fabrication enhances homotypic tumor targeting and reduces hard protein corona formation ...
Daniele De Pasquale, Michela Patrucco, Melike Belenli Gümüş, Alessandra Flori, Luca Menichetti, Stefania Moscato, Valentina Bonanni, Alessandra Gianoncelli, Milan Žižić, Pietro Fiaschi, Monica Truffelli, Andrea Bianconi, Melis Emanet, Gianmarco Ferri, Chiara Maria Mazzanti, Carlotta Pucci, Gianni Ciofani   +16 more
wiley   +1 more source

Synthesis and characterization of polysaccharide-maghemite composite nanoparticles and their antibacterial properties [PDF]

, 2012
International audienceThe aim of this study was to obtain saccharide (dextran and sucrose)-coated maghemite nanoparticles with antibacterial activity. The polysaccharide-coated maghemite nanoparticles were synthesized by an adapted coprecipitation method.
Prodan, Alina Mihaela, Motelica-Heino, Mikael, Predoi, Daniel, Daniela Predoi, Alina Prodan, Sizaret, Stanislas, Iconaru, Simona Liliana, Stanislas Sizaret, Simona Iconaru, Mikael Motelica-Heino   +9 more
core   +1 more source

Mineralogical Evolution of Magnetic Rhodic Oxisols under Different Lithological Influences in Brazil

Revista Brasileira de Ciência do Solo
Ferrimagnetic Fe-oxides are important soil components, which are present in most of the agricultural soils of Brazil. Distinction, origin, and assessment of the influence of these minerals on magnetism and geochemistry is a challenge for mineralogists ...
Luiz Aníbal Silva Filho, João Carlos Ker, Maurício Paulo Ferreira Fontes, Danilo de Lima Camêlo, Marcelo Metri Corrêa, Luis Carlos Duarte Cavalcante, Luciano de Moura Guimarães   +6 more
doaj   +1 more source