Interaction of the Helium, Hydrogen, Air, Argon, and Nitrogen Bubbles with Graphite Surface in Water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73584366" target="_blank" >RIV/61989592:15310/17:73584366 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.acs.org/doi/full/10.1021/acsami.6b16493" target="_blank" >http://pubs.acs.org/doi/full/10.1021/acsami.6b16493</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.6b16493" target="_blank" >10.1021/acsami.6b16493</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interaction of the Helium, Hydrogen, Air, Argon, and Nitrogen Bubbles with Graphite Surface in Water

Popis výsledku v původním jazyce

The interaction of the confined gas with solid Surface immersed in water is a common theme of many important fields such as self-cleaning surface, gas storage, and sensing. For that reason, we investigated the gas-graphite interaction in the water medium. The graphite surface was prepared by mechanical exfoliation of highly oriented pyrolytic graphite (HOPG). The surface chemistry and morphology were studied by X-ray photoelectron spectroscopy, profilometry, and atomic force microscopy. The surface energy of HOPG was estimated by contact angle measurements using the Owens-Wendt method. The interaction of gases (Ar, He, H-2, N-2, and air) with graphite was studied by a captive bubble method, in. which the gas bubble was in.contact with the exfoliated graphite surface in water media. The, experimental data were corroborated by molecular dynamics simulations and density,functional theory calculations. The surface energy of HOPG equaled to 52.8 mJ/m(2) and more of 95% of the surface energy was attributed to dispersion interactions. The results On gas-surface interaction indicated that HOPG surface had gasphilic behavior for helium and hydrogen, while gasphobic behavior for argon and nitrogen. The results showed that the variation of the gas contact angle was related to the balance between the gas-surface and gas-gas interaction potentials. For helium and hydrogen the gas-surface interaction was particularly high compared to gas-gas interaction and this promoted the favorable interaction with graphite surface.

Název v anglickém jazyce

Interaction of the Helium, Hydrogen, Air, Argon, and Nitrogen Bubbles with Graphite Surface in Water

Popis výsledku anglicky

The interaction of the confined gas with solid Surface immersed in water is a common theme of many important fields such as self-cleaning surface, gas storage, and sensing. For that reason, we investigated the gas-graphite interaction in the water medium. The graphite surface was prepared by mechanical exfoliation of highly oriented pyrolytic graphite (HOPG). The surface chemistry and morphology were studied by X-ray photoelectron spectroscopy, profilometry, and atomic force microscopy. The surface energy of HOPG was estimated by contact angle measurements using the Owens-Wendt method. The interaction of gases (Ar, He, H-2, N-2, and air) with graphite was studied by a captive bubble method, in. which the gas bubble was in.contact with the exfoliated graphite surface in water media. The, experimental data were corroborated by molecular dynamics simulations and density,functional theory calculations. The surface energy of HOPG equaled to 52.8 mJ/m(2) and more of 95% of the surface energy was attributed to dispersion interactions. The results On gas-surface interaction indicated that HOPG surface had gasphilic behavior for helium and hydrogen, while gasphobic behavior for argon and nitrogen. The results showed that the variation of the gas contact angle was related to the balance between the gas-surface and gas-gas interaction potentials. For helium and hydrogen the gas-surface interaction was particularly high compared to gas-gas interaction and this promoted the favorable interaction with graphite surface.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Applied Materials &amp; Interfaces

ISSN

1944-8244

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

17518-17526

Kód UT WoS článku

000402498600083

EID výsledku v databázi Scopus

2-s2.0-85019771653