Results 81 to 90 of about 35,935 (220)

Moderate Fire Temperatures Affect the Structure of Clayey Oxisol Aggregates

Land Degradation &Development, Volume 37, Issue 8, Page 3169-3181, 15 May 2026.
ABSTRACT Wildfires have become increasingly frequent and intense worldwide, raising concerns about their impacts on soil systems. However, the thermal responses of clay‐rich Oxisols, dominated by Fe and Al oxides, remain poorly understood. In this study, samples from the 0 to 5 cm layer of six Oxisols were subjected to controlled heating at ...
Yasmmin Tadeu Costa, Paulo Angelo Fachin, Bruno Teixeira Ribeiro, Edivaldo Lopes Thomaz, Alberto Vasconcellos Inda Junior, Nilton Curi   +5 more
wiley   +1 more source

The effects of aggregation and protein corona on the cellular internalization of iron oxide nanoparticles

, 2011
Engineered inorganic nanoparticles are essential components in the development of nanotechnologies. For applications in nanomedicine, particles need to be functionalized to ensure a good dispersibility in biological fluids.
Berret, J. -F., Conjeaud, H., Courtois, J., Safi, M., Seigneuret, M.   +4 more
core   +2 more sources

Synthesis Features of Iron Oxide Nanopowders with High Magnetic and Sorption Properties [PDF]

, 1995
The magnetic particles of iron oxides are promising materials for the purification of water from ions of heavy metals and radionuclides. Their advantage compared to other sorbents is the ability to extract by applied magnetic field, which greatly ...
Lavrynenko, Sergiy, Mamalis, Athanasios G., Sofronov, Dmitry, Odnovolova, Alexandra, Starikov, Vadym   +4 more
core   +1 more source

Nanobiocatalysts: Potential Applications in Biofuel Production and Biotransformation

Carbon Neutralization, Volume 5, Issue 3, May 2026.
The application of nanobiocatalysts in the field of biofuel production and the biotransformation of substrate were reviewed. Further, the possible research gaps in the field of biofuel and value‐added compound production and a possible way to enhance the application of nanobiocatalyst in future development are highlighted.
Preethi Muthu, Kalaiselvi Thiyagarajan, V. Pugalenthi, M. Gunasekaran, J. Rajesh Banu   +4 more
wiley   +1 more source

Development of Chitosan Functionalized Magnetic Nanoparticles with Bioactive Compounds

Nanomaterials, 2020
In this study, magnetic maghemite nanoparticles, which belong to the group of metal oxides, were functionalized with chitosan, a non-toxic, hydrophilic, biocompatible, biodegradable biopolymer with anti-bacterial effects.
Gordana Hojnik Podrepšek, Željko Knez, Maja Leitgeb   +2 more
doaj   +1 more source

Iron-stabilized nanocrystalline ZrO2 solid solutions: Synthesis by combustion and thermal stability [PDF]

, 2009
The synthesis of Fe3+-stabilized zirconia by the nitrate/urea combustion route was investigated. Using several characterization techniques, including X-ray diffraction, field-emission-gun scanning electron microscopy and notably Mo¨ ssbauer spectroscopy,
Barnabé, Antoine, De Grave, Eddy, De Resende, Valdirene Gonzaga, Laurent, Christophe, Legorreta Garcia, Felipe, Peigney, Alain   +5 more
core   +2 more sources

Effective Removal of Fe and Ca From Coal Fly Ash for High‐Purity and High‐Surface‐Area Zeolite X Synthesis: A Comparative Study of Acid Refluxing and Acid Roasting Methods

ChemistryOpen, Volume 15, Issue 5, May 2026.
Coal fly ash (CFA) is an abundant industrial waste rich in silica and alumina and represents a viable feedstock for zeolite synthesis; however, high levels of calcium and iron limit zeolite purity and crystallisation. This study evaluates acid refluxing and acid roasting as pre‐treatment strategies for the simultaneous removal of Ca and Fe from high ...
Emmanuel Monkgomotsi Victor Gaolefufa, Thapelo Manyapedza, Isaac N. Beas, Bakang F. Modukanele, Moses T. Kabomo   +4 more
wiley   +1 more source

Effective Adsorption of Methylene Blue dye onto Magnetic Nanocomposites. Modeling and Reuse Studies

Applied Sciences, 2019
In the present study, new adsorbent beads of alginate (A)/maghemite nanoparticles (γ-Fe2O3)/functionalized multiwalled carbon nanotubes (f-CNT) were prepared and characterized by several techniques, e.g., N2 adsorption-desorption isotherms, Fourier ...
Silvia Alvarez-Torrellas, Mokhtar Boutahala, Nadia Boukhalfa, Macarena Munoz   +3 more
doaj   +1 more source

Nonmonotonic Evolution of the Blocking Temperature in Dispersions of Superparamagnetic Nanoparticles

, 2010
We use a Monte Carlo approach to simulate the influence of the dipolar interaction on assemblies of monodisperse superparamagnetic ${\gamma}-Fe_{2}O_{3}$ nanoparticles. We have identified a critical concentration c*, that marks the transition between two
C. E. Hoppe, D. Baldomir, D. Serantes, F. Rivadulla, J. Rivas, L. Néel, M. Pereiro   +6 more
core   +1 more source

Raman spectroscopy as a powerful technique in the characterization of ferrofluids [PDF]

, 2001
Raman spectroscopy has been used to get some insight into the chemical composition and structure of magnetic fluids based on ferrites. The inner as well as the surface structure of Fe-maghemite and Zn-maghemite have characterized by Raman spectroscopy ...
Rubim, Joel Camargo, Silva, Jean Clay de Oliveira e, Sousa, Marcelo Henrique, Tourinho, Francisco Augusto   +3 more
core   +2 more sources