Results 11 to 20 of about 44,635 (261)

Iron oxides in the cryoconite of glaciers on the Tibetan Plateau: abundance, speciation and implications [PDF]

open access: yesThe Cryosphere, 2018
Cryoconite is a mixture of impurities and ice visually represented by dark colors present in the ablation zone of glaciers. As an important constituent of light-absorbing impurities on the glacier surface, iron oxides influence the radiative ...
Z. Cong   +11 more
doaj   +1 more source

Synergistic Ti-Fe Oxides on Fishbone-Derived Carbon Sulfonate: Enhanced Styrene Oxidation Catalysis

open access: yesIndonesian Journal of Chemistry, 2023
Fishbone-derived carbon sulfonate, modified through incipient wetness impregnation with titanium tetraisopropoxide and iron nitrate salts, displays catalytic activity in the oxidation of styrene with hydrogen peroxide (H2O2) as an oxidant.
Mukhamad Nurhadi   +4 more
doaj   +1 more source

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

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

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

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

Comprehensive evaluation of manganese oxides and iron oxides as metal substrate materials for constructed wetlands from the perspective of water quality and greenhouse effect

open access: yesEcotoxicology and Environmental Safety, 2021
Manganese oxides and iron oxides have been widely introduced in constructed wetlands (CWs) for sewage treatment due to their extensiveness in nature and their ability to participate in various reactions, but their effects on greenhouse gas (GHG ...
Shiyi Cheng   +6 more
doaj   +1 more source

Iron oxides as efficient sorbents for CO2 capture

open access: yesJournal of Materials Research and Technology, 2019
Carbon dioxide capture/release reactions using magnetite, Fe3O4, and hematite, Fe2O3, as sorbents were studied. Kinetics of mechanically activated chemical reactions between iron oxides and CO2 was investigated as a function of CO2 pressure and planetary
Eduin Yesid Mora Mendoza   +6 more
doaj   +1 more source

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