نتایج جستجو برای: ferrihydrite

تعداد نتایج: 542  

Journal: :Environmental Pollution 2021

This study aimed at elucidating the long-term efficiency of soil remediation where chemical stabilization arsenic (As) contaminated using zerovalent iron (Fe) amendments was applied. A combination extraction and extended X-Ray absorption fine structure (EXAFS) spectroscopy technique applied on soils collected from five laboratory field experiments in Sweden France. All were treated with 1 wt% F...

Journal: :ACS Catalysis 2021

Surface-sensitive ambient pressure X-ray photoelectron spectroscopy and near-edge absorption fine structure combined with an electrocatalytic reactivity study, multilength-scale electron microscopy, theoretical modeling provide insights into the gas-phase selective reduction of carbon dioxide to isopropanol on a nitrogen-doped carbon-supported iron oxyhydroxide electrocatalyst. Dissolved atomic...

Journal: :American Journal of Analytical Chemistry 2023

Fixed-bed operating experimental column conditions were studied to evaluate the performance of brick from Bangui Region (in Central African Republic), coated with iron oxyhydroxide (ferrihydrite) for removal iron(II) aqueous solution. The prediction theoretical breakthrough profiles using Bohart and Adams sorption model was employed achieve characteristic parameters such as depth exchange zone,...

Journal: :Journal of Alloys and Compounds 2021

Ferrihydrite is a low-crystalline nanoscale matter. The uncompensated magnetic moment of the ferrihydrite caused by antiferromagnetic ordering moments iron atoms and leads to properties very similar those ferro- ferrimagnetic nanoparticles. In this study, we investigated biogenic nanoparticles with narrow size distribution an average diameter ?2 nm obtained bacteria life cycle. features surface...

Journal: :Clays and Clay Minerals 2021

Abstract Among all iron oxides, hematite (α-Fe 2 O 3 ), goethite (α-FeOOH), and ferrihydrite (FeOOH⋅ n H O) are the most common mineral species. While immobilization of Mo 6+ by surface adsorption on ferric oxides has been studied extensively, mechanisms incorporation in their structure have researched little. The objective this study was to investigate relation between content its structural h...

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