نتایج جستجو برای: surface reactivity

تعداد نتایج: 685282  

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2009
Axel Groß

Changing the composition and structure of a bimetallic surface system modifies its electronic properties and thus its catalytic activity. On the basis of density functional theory calculations, the electronic factors underlying the modified properties of bimetallic surfaces such as overlayer systems and, in particular, surface alloys will be discussed. It will be demonstrated that by mixing two...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Gang Liu Sudeep Debnath Kristian W Paul Weiqiang Han Douglas B Hausner Hazel-Ann Hosein F Marc Michel John B Parise Donald L Sparks Daniel R Strongin

Ferrihydrite nanoparticles with nominal sizes of 3 and 6 nm were assembled within ferritin, an iron storage protein. The crystallinity and structure of the nanoparticles (after removal of the protein shell) were evaluated by high-resolution transmission electron microscopy (HRTEM), atomic force microscopy (AFM), and scanning tunneling microscopy (STM). HRTEM showed that amorphous and crystallin...

Journal: :Physical review letters 1995
Hammer Scheffler

Journal: :Crystals 2023

This study employs a comprehensive computational analysis of the 2-benzyloxy-1,2,4-triazolo[1,5-a] quinazolin-5(4H)-one (ID code: CCDC 834498) to explore its intermolecular interactions, surface characteristics, and crystal structure. Utilizing Hirshfeld technique Crystal Explorer 17.5, maps surfaces for detailed understanding atom pair close contacts interaction types. The also investigates co...

Journal: :Transport in Porous Media 2021

Abstract Current reactive transport model (RTM) uses control as the sole arbiter of differences in reactivity. For simulation crystal dissolution, a constant reaction rate is assumed for entire surface function chemical parameters. However, multiple dissolution experiments confirmed existence an intrinsic variability rates, spanning two to three orders magnitude. Modeling this variance process ...

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