نتایج جستجو برای: cerium oxide nanocrystals
تعداد نتایج: 188099 فیلتر نتایج به سال:
Hot reformate gas produced by reforming of heavy fuels, such as JP-8, must be desulfurized prior to its use in a solid oxide fuel cell (SOFC). This requires development of sorbent materials with high sulfur absorption efficiency and capacity at the SOFC operating temperature (650-800 C) to avoid heat exchanger penalties. Sorbent performance stability in cyclic operation of sulfidation and regen...
Mixed spinel nanocrystals have captured the attention of scientist in the field for their catalytic activity in decomposition of hydrogen peroxide. In this study nanocatalysts MnFe2O4, Co3O4, Pb3O4, Co0.5Zn0.5Fe2O4 and Co0.5Mn0.5Fe2O4 were synthesized by co-precipitation method. The synthetic samples were characterized by XRD patterns, SEM images and IR spectroscopy. The size of the nanoparticl...
Abstract Cerium oxide nanoparticles have unique catalytic and oxygen storage capacity properties. In this work, the morphology size of cerium were experimentally theoretically investigated. For synthesis nanoparticles, laser ablation method was used. The analysis morphological characteristics performed using transmission electron microscopy. Using molecular dynamics, we reveal limiting dimensio...
Metal–oxide–semiconductor capacitor structure with metal nanocrystals embedded in the gate oxide for the application of nonvolatile memory (NVM) is fabricated. Optimal process parameters are investigated and Au nanocrystals are adopted in this paper. High-frequency capacitance versus voltage (C–V ) and conductance versus voltage (G–V ) measurements demonstrate the memory effect of the structure...
The effect of nanomaterials on biota under realistic environmental conditions is an important question. However, there is still a lack of knowledge on how different illumination conditions alter the toxicity of some photocatalytic nanomaterials. We have investigated how environmentally relevant UV-A exposure (intensity 8.50 ± 0.61 W/m(2), exposure dose 9.0J/cm(2)) affected the toxicity of ceriu...
We report the simple synthesis of poly(ethylene glycol)(PEG)-derivatized phosphine oxide ligands for water-dispersible metal oxide nanocrystals.
For the first time, we considered Mn oxide/C60 composites as water-oxidizing catalysts. The composites were synthesized by easy and simple procedures, and characterized by some methods. The water-oxidizing activities of these composites were also measured in the presence of cerium(iv) ammonium nitrate. We found that the nanolayered Mn oxide/C60 composites show promising activity toward water ox...
The first target of any therapy for retinal neurodegeneration is to slow down the progression of the disease and to maintain visual function. Cerium oxide or ceria nanoparticles reduce oxidative stress, which is known to play a pivotal role in neurodegeneration. Our aim was to investigate whether cerium oxide nanoparticles were able to mitigate neurodegeneration including microglial activation ...
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