نتایج جستجو برای: nano metal oxides

تعداد نتایج: 259901  

Effects of different concentrations [0, 1, 5, 10, 20 and 40 mgL-1] of Fe3O4 and CuO nano-particles (nFe3O4 and nCuO) were investigated on sulforaphane (SFN) production level in 7-day-old seedlings of Lepidium draba at different time intervals (8 and 16 hrs). According to the results, the influence of the particles on SFN contentdepends on nano-particle (NP) concentrations, time of treatment as ...

2015
Yan Wang Jin Guo Tingfeng Wang Junfeng Shao Dong Wang Ying-Wei Yang

Recently, transition metal oxides, such as ruthenium oxide (RuO₂), manganese dioxide (MnO₂), nickel oxides (NiO) and cobalt oxide (Co₃O₄), have been widely investigated as electrode materials for pseudo-capacitors. In particular, these metal oxides with mesoporous structures have become very hot nanomaterials in the field of supercapacitors owing to their large specific surface areas and suitab...

2015
Cheol-Hong Lim

In recent years, the use of both nano- and micro-sized lanthanum has been increasing in the production of optical glasses, batteries, alloys, etc. However, a hazard assessment has not been performed to determine the degree of toxicity of lanthanum. Therefore, the purpose of this study was to identify the toxicity of both nano- and micro-sized lanthanum oxide in cultured cells and rats. After id...

Journal: :Iraqi journal of science 2023

Nanometal oxides were extracted from cement factories wastes and employed to proliferate skin cancer cells using MTT (Methyl Thiazolyl Tetraolium) assay. assay results for cell line A375,for CaO NPs the best concentration was 200 μg/mL,The viability reduced 57.28% while IC50 (69.66) g/mL A375 normal WRL68 significantly higher (231.2 g/mL). The cytotoxicity of CaO: MgO: Fe2O3 NPs, at concentrati...

Journal: :journal of nanostructures 0
atefeh rahmani department of chemistry, zahedan branch, islamic azad university, zahedan, iran jilla saffari department of chemistry, zahedan branch, islamic azad university, zahedan, iran

the perovskite-structured la2cuo4 nanoparticles have been synthesized via an ultrasonic-assisted co-precipitation route using octanoic acid as organic surfactant, and the phase composition, morphology, lattice parameters and size of nanoparticles are characterized through fourier transform infrared spectroscopy, x-ray diffraction, scanning electron microscopy and transmission electron microscop...

Journal: :Chemistry of Materials 2021

We review past and recent progress in Nano-Imprint Lithography (NIL) methods to (nano-) structure inorganic materials from sol-gel liquid formulations colloidal suspensions onto a surface. This technique, first inspired by embossing techniques, was developed for soft polymer processing, as final or intermediate materials, but is today fully adapted hard with high dielectric constant, such metal...

Journal: :Journal of The Surface Finishing Society of Japan 2012

2018
Thomas Hartman Bert M Weckhuysen

Raman spectroscopy is known as a powerful technique for solid catalyst characterization as it provides vibrational fingerprints of (metal) oxides, reactants, and products. It can even become a strong surface-sensitive technique by implementing shell-isolated surface-enhanced Raman spectroscopy (SHINERS). Au@TiO2 and Au@SiO2 shell-isolated nanoparticles (SHINs) of various sizes were therefore pr...

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