نتایج جستجو برای: surface reactivity

تعداد نتایج: 685282  

Journal: :Applied Surface Science 2022

Graphene derivatives are an emerging and important class of promising materials because they can bear a wide variety functional groups, rendering them suitable for plethora applications, ranging from energy storage to sensorics. Further functionalisation these requires thorough understanding their reactivity at the molecular level organic groups close effectively infinite surface, which may aff...

Journal: :Environmental science & technology 2004
Robert J Griffin Meghan K Revelle Donald Dabdub

Metrics associated with ozone (O3) formation are investigated using the California Institute of Technology (CIT) three-dimensional air-quality model. Variables investigated include the O3 production rate (P(O3)), O3 production efficiency (OPE), and total reactivity (the sum of the reactivity of carbon monoxide (CO) and all organic gases that react with the hydroxyl radical). Calculations are sp...

Journal: :Physical chemistry chemical physics : PCCP 2012
M Wolthers D Di Tommaso Z Du N H de Leeuw

Calcite-water interactions are important not only in carbon sequestration and the global carbon cycle, but also in contaminant behaviour in calcite-bearing host rock and in many industrial applications. Here we quantify the effect of variations in surface structure on calcite surface reactivity. Firstly, we employ classical Molecular Dynamics simulations of calcite surfaces containing an etch p...

Journal: :Catalysis Science & Technology 2022

Controlling the reactivity and stability of graphene-supported Ru NPs by modifying their surface with pyrene-tagged N -heterocyclic carbene ligands.

ژورنال: مواد پرانرژی 2017

Using of nanoparticles in Composite solid  propellant formulations has extended in recent years. Nano additives increases burning rate of these formulations and consequently improves performance, because of their high reactivity potential, high catalytic activity and high surface area to volume ratio. However, poor dispersibility  of nanoparticles leads to agglomeration in the binder and thus r...

The interactions between N-hydroxyurea (NHU) as anticancer drug and SWCNTs (pure and Fe-doped) were investigated with density functional theory. In this study, large long-range corrected CAM-B3LYP and B3LYP were employed to investigate the stability of the different NHU-CNT and NHU/Fe-CNT complexes in the gas phase and solution (water). The presence of an iron atom would create suitable space o...

ژورنال: مواد پرانرژی 2015

Composite solid propellants are materials that constitute from an oxidizer, an organic binder, a metallic fuel, additives and etc. Nowadays the size of energetic particles is attended because of their functional profits. Size reduction is well known way to increasing reactivity of additives in propellant formulations. Nanoparicles have considerable effects on composite solid propellants propert...

2014
Shuainan Zhao Karin Larsson

The effect of B doping on the surface (111) reactivity has, in the present study, been investigated for various surface terminations, H, OH, Oon-top, and F. This type of surface modification has experimentally been proven to be extremely important for, for example, applications based on surface electrochemistry. Density functional theory (DFT) has here been used to study both the local and more...

2017
D Ribas M Černík J Benito J. Filip V Marti

Nanoscale Zero Valent Iron (nZVI) represents a promising material for subsurface water remediation technology. However, dry, bare nZVI particles are highly reactive, being pyrophoric when they are in contact with air. The current trends of nZVI manufacturing lead to the surface passivation of dry nZVI particles with a thin oxide layer, which entails a decrease in their reactivity. In this work ...

Journal: :Folia biologica 2003
B Dzhambazov I Teneva L Koleva D Asparuhova N Popov

The variability in the morphology, modal number of chromosomes, TCR expression and functional reactivity of a CII-specific T-cell hybridoma at continuous subcultivation have been investigated. As the number of passages increased, besides the oval semiadherent cells (normal phenotype), fibroblast-like cells (transformed phenotype) were also observed. The two cell subpopulations differed in their...

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