Artículo
Nanobubble Stability and Formation on Solid-Liquid Interfaces in Open Environments
Fecha de publicación:
07/2023
Editorial:
American Chemical Society
Revista:
Nano Letters
ISSN:
1530-6992
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Are surface nanobubbles transient or thermodynamically stable structures? This question remained controversial until recently, when the stability of gas nanobubbles at solid−liquid interfaces was demonstrated from thermodynamic arguments in closed systems, establishing that bubbles with radii of hundreds of nanometers can be stable at modest supersaturations if the gas amount is finite. Here we develop a grand-canonical description of bubble formation that predicts that nanobubbles can nucleate and remain thermodynamically stable in open boundaries at high supersaturations when pinned to hydrophobic supports as small as a few nanometers. While larger bubbles can also be stable at lower supersaturations, the corresponding barriers are orders of magnitude above kT, meaning that their formation cannot proceed via heterogeneous nucleation on a uniform solid interface but must follow some alternative path. Moreover, we conclude that a source of growth-limiting mechanism, such as pinning or gas availability, is necessary for the thermodynamic stabilization of surface bubbles.
Palabras clave:
nanobubble
,
confinement
,
grand-canonical
,
supersaturation
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Gadea, Esteban David; Molinero, Valeria; Damián A Scherlis; Nanobubble Stability and Formation on Solid-Liquid Interfaces in Open Environments; American Chemical Society; Nano Letters; 23; 15; 7-2023; 7206-7212
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