The influence of carbon sorbent surface properties on adsorption poly- and heterocyclic aromatic hydrocarbons

2019 ◽  
pp. 65-69
Author(s):  
A. I. Soldatov ◽  
S.  I. Borovik
Keyword(s):  
Surface Structure ◽  
Surface Properties ◽  
Aromatic Hydrocarbons ◽  
Carbon Material ◽  
Carbon Sorbent ◽  
Sorbent Surface ◽  
Reducing Ability ◽  
Aromatic Systems

The influence of the carbon sorbent surface structure and the affinity energy of a molecule to an electron on the adsorption of poly- and heterocyclic aromatic hydrocarbons is established. By adjusting the reducing ability of the carbon material, it is possible to control the process of adsorption and the selectivity of the sorbent relative to condensed aromatic systems. Ill. 2. Ref. 10. Tab. 3.

Insights from Density Functional Theory Calculations into the Effects of the Adsorption and Dissociation of Water on the Surface Properties of Zinc Diphosphide (ZnP2) Nanocrystals

2021 ◽  
Author(s):  
Barbara Farkas ◽  
Aleksandar Zivkovic ◽  
Veikko Uahengo ◽  
Nelson Yaw Dzade ◽  
Nora Henriette De Leeuw
Keyword(s):  
Density Functional Theory ◽  
Surface Structure ◽  
Surface Properties ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Photovoltaic Applications ◽  
Zinc Diphosphide ◽  
Adsorption And Dissociation

Zinc phosphides (ZnP2 and Zn3P2) are emerging absorber materials for photovoltaic applications owing to their abundancy and non-toxic nature. Herein, we provide a comprehensive characterisation of the surface structure, composition,...

Controlling Lateral Ordering of InGaAs Quantum Dots with Arsenic Background

2006 ◽  
Vol 959 ◽  
Author(s):  
Euclydes Marega ◽  
Ziad Abu Waar ◽  
Mohammad Hussein ◽  
Gregory Salamo
Keyword(s):  
Quantum Dots ◽  
Surface Structure ◽  
Surface Properties ◽  
Diffusion Mechanism ◽  
Gaas Surface ◽  
Theoretical Studies ◽  
Growth Environment ◽  
Lateral Ordering ◽  
Experimental And Theoretical Studies ◽  
And Diffusion

ABSTRACTWe present in this work a method to control lateral ordering of In0.4Ga0.6As quantum dots (QDs) using the surface anisotropic and the growth environment. We have shown experimentally that using As2 molecules instead of As4 as a background flux is promising to control the diffusion of adatoms in away to make it possible to control the ordering of In0.4Ga0.6As QDs together with the GaAs surface properties specially for GaAs (100) surfaces. For GaAs (n11)B surfaces the As4 provides a better two dimension ordering than the As2 environment. Our results are consistent with reported experimental and theoretical studies on surface structure and diffusion mechanism over GaAs surface.

Anisotropic Wetting Behavior on Injection Molded Polypropylene Parts Inspired by Surface Structure of Moss

2015 ◽  
Vol 752-753 ◽  
pp. 168-171
Author(s):  
Martin Boruvka
Keyword(s):  
Surface Structure ◽  
Surface Properties ◽  
Manufacturing Process ◽  
Low Cost ◽  
Mold Insert ◽  
Injection Mold ◽  
Additional Processing ◽  
Injection Molded ◽  
Key Drivers ◽  
Thermoplastic Olefins

During the last years the carmakers interest is focused on polymer manufacturers to develop breakthrough solutions addressing the key drivers of reducing weight and cost. The use of polypropylene (PP) and other thermoplastic olefins is growing because of their low cost and good properties. Unfortunately, some of the same properties that make these plastics attractive to designers, also make them difficult to bond with adhesives or varnish. Non-polar character of PP results in poor surface properties and low wettability. Several methods of surface pretreatments have been used to improve its wettability, but all involves cost extending additional processing. Based on lessons from nature, one of the ways how to increase wettability is surface structuring. Injection mold insert designing and manufacturing process inspired by hydrophilic structure of the moss is presented. Due to cost reducing demands were used conventional processing methods.

Classical and quantum simulation of the surface properties of α-Al 2 O 3

1992 ◽  
Vol 341 (1661) ◽  
pp. 301-312 ◽  
Keyword(s):  
Surface Structure ◽  
Surface Properties ◽  
Adsorption Energy ◽  
Surface Segregation ◽  
Surface Coverage ◽  
Crystal Morphology ◽  
Quantum Simulation ◽  
Lattice Structures ◽  
Surface Lattice

Classical simulations are described of the fully relaxed surface lattice structures of the five lowest-index planes of α-Al 2 0 3 and the resulting crystal morphology. The surface coverage by yttrium and magnesium as a function of temperature is evaluated on the basis of a non-Arrhenius isotherm and calculated heats of surface segregation. The calculated morphology, surface coverages and heats of segregation are compared with experiment. A quantum simulation of a relaxed {0001} surface is presented and the surface structure and energy compared with the classical results. Estimates are made of the adsorption energy of HF at the {0001} surface.

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