Results 11 to 20 of about 24,708 (261)

Isomers of Iron(III) Oxides and Cobalt(III) Oxides and Their Redox Properties: Quantum-Chemical Insights

open access: yesMolecules
Iron(III) oxide and cobalt(III) oxide can form distinct spatial and spin configurations. Kite, spindle, and linear geometries have been shown to be stable for the specified electron configurations; however, these oxides generally favor higher open-shell ...
Sapajan Ibragimov   +2 more
doaj   +2 more sources

Raman Spectroscopy of the Iron Oxides in the Form of Minerals, Particles and Nanoparticles [PDF]

open access: yes, 2023
Magnetic iron oxides, such as Fe3O4, α-Fe2O3, γ-Fe2O3, have unique magnetic, catalytic and biochemical features, rendering them suitable for several specific technological and biomedical applications.
Sparavigna, Amelia Carolina   +1 more
core   +1 more source

Characterization of lacustrine iron sulfide particles with proton-induced X-ray emission. [PDF]

open access: yes, 1992
Black particles, collected by filtration (1.2~pm pore size) from the anoxic waters of a soft-water lake, were examined by a scanning proton microprobe which permitted quantitative elemental analysis by proton-induced X-ray emission (PIXE) and Rutherford ...
GRIME, GW   +8 more
core   +1 more source

Iron (oxyhydr)oxides are responsible for the stabilization of Cu and Zn in AMD after treatment with limestone [PDF]

open access: yesPeerJ, 2023
The formation and transformation of secondary iron (oxyhydr)oxides and their role in the stabilization of copper (Cu) and zinc (Zn) in acid mine drainage (AMD) after limestone treatment are worth studying to better understand the impacts of limestone AMD
Yuan Ding   +4 more
doaj   +2 more sources

Iron oxide surfaces [PDF]

open access: yesSurface Science Reports, 2016
165 pages, 105 figures, 616 ...
openaire   +2 more sources

Functional role of PilA in iron acquisition in the cyanobacterium Synechocystis sp. PCC 6803.

open access: yesPLoS ONE, 2014
Cyanobacteria require large quantities of iron to maintain their photosynthetic machinery; however, in most environments iron is present in the form of insoluble iron oxides.
Jacob J Lamb   +3 more
doaj   +1 more source

Crystal Structures of Iron‐Based Oxides and Their Catalytic Efficiencies for the Oxygen Evolution Reaction: A Trend in Alkaline Media

open access: yesChemElectroChem, 2022
The physical and chemical properties of inorganic materials significantly depend on their crystal structures. Therefore, precise design of structures can promote the development of highly active electrocatalysts.
Dr. Yuuki Sugawara   +3 more
doaj   +2 more sources

Safety and efficacy of iron oxide black, red and yellow for all animal species

open access: yesEFSA Journal, 2016
Iron oxides black, red and yellow are intended to be used as colourings to add and restore colour to feedingstuffs at a recommended concentration between 500 and 1,200 mg/kg. No data on the tolerance of target animals were provided. The iron oxides black,
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj   +1 more source

Tumour cell labelling by magnetic nanoparticles with determination of intracellular iron content and spatial distribution of the intracellular iron [PDF]

open access: yes, 2013
Magnetically labelled cells are used for in vivo cell tracking by MRI, used for the clinical translation of cell-base therapies. Studies involving magnetic labelled cells may include separation of labelled cells, targeted delivery and controlled release ...
Wang, Zhigang   +3 more
core   +1 more source

Iron oxides dynamics in a subtropical Brazilian Paleudult under long-term no-tillage management

open access: yesScientia Agricola, 2013
Replacing conventional tillage (CT) with no-tillage (NT) management alters the pedoenvironment and the rate of topsoil processes, with possible effects on dissolution processes associated with iron oxides and therefore soil mineralogy.
Alberto Vasconcellos Inda   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy