Topic
Iron oxide
About: Iron oxide is a research topic. Over the lifetime, 18360 publications have been published within this topic receiving 366846 citations. The topic is also known as: iron oxides.
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TL;DR: In this paper, the performance data of metal oxide thin-film electrodes have been presented, and the supercapacitors exhibited the specific capacitance values between 50 and 1100 F g-1, which are quite comparable with bulk electrode values.
756 citations
TL;DR: The results show that the adsorptions of Cr(III) on the composites is strongly dependent on contact time, agitation speed and pH, in the batch mode; and on flow rate and the bed thickness in the fixed bed mode.
689 citations
TL;DR: In this article, the authors predicted the relative energies and geometries of AsO4-FeOOH surface complexes using density functional theory calculations on analogue Fe2(OH)2(H2O)nAsO2(23+) and Fe2 (OH) 2(H 2O) nAsO4+ clusters, and they found no evidence for monodentate (1V) complexes; this agrees with the predicted high energies of such complexes.
675 citations
TL;DR: In this paper, the authors summarized recently measured thermodynamic data on the formation and surface energies of various iron oxides and showed that polymorphs metastable as micrometer-sized or larger crystals can often be thermodynamically stabilized at the nanoscale.
Abstract: Iron oxides occur ubiquitously in environmental, geological, planetary, and technological settings. They exist in a rich variety of structures and hydration states. They are commonly fine-grained (nanophase) and poorly crystalline. This review summarizes recently measured thermodynamic data on their formation and surface energies. These data are essential for calculating the thermodynamic stability fields of the various iron oxide and oxyhydroxide phases and understanding their occurrence in natural and anthropogenic environments. The competition between surface enthalpy and the energetics of phase transformation leads to the general conclusion that polymorphs metastable as micrometer-sized or larger crystals can often be thermodynamically stabilized at the nanoscale. Such size-driven crossovers in stability help to explain patterns of occurrence of different iron oxides in nature.
660 citations
TL;DR: In this article, green tea leaves (GT-Fe NPs) were used as a Fenton-like catalyst for decolorization of aqueous solutions containing methylene blue (MB) and methyl orange (MO) dyes.
659 citations