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Nanobubble-Assisted Nanopatterning Reveals the Existence of Liquid Quasi-Two-Dimensional Foams Pinned to a Water-Immersed Surface
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SYSNO ASEP 0525431 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanobubble-Assisted Nanopatterning Reveals the Existence of Liquid Quasi-Two-Dimensional Foams Pinned to a Water-Immersed Surface Author(s) Tarábková, Hana (UFCH-W) RID, ORCID
Janda, Pavel (UFCH-W) RID, ORCIDSource Title Langmuir. - : American Chemical Society - ISSN 0743-7463
Roč. 36, č. 26 (2020), s. 7200-7209Number of pages 10 s. Language eng - English Country US - United States Keywords nanobubbles ; bubbles ; hydrocarbons Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) R&D Projects GAP208/12/2429 GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (10.06.2021) Institutional support UFCH-W - RVO:61388955 UT WOS 000548555400005 EID SCOPUS 85087816518 DOI 10.1021/acs.langmuir.0c00331 Annotation This paper reports on our observation of a quasi-two-dimensional (quasi-2D) liquid nanofoam spontaneously appearing on a submersed solid surface. Unlike common liquid foams existing on top of the liquid, the quasi-2D liquid nanofoam is pinned to a water-immersed solid surface. The foam imaging was performed by a nanobubble imprint technique, which allows recording the positions of the surface nanobubbles by their imprints in a polystyrene film, as described in our previous papers [Tarábková et al. Langmuir2014, 30, 14522, Tarábková et al., Langmuir2016, 32, 11221]. Nanobubble imprints are then examined by ex situ atomic force microscopy. Besides randomly distributed nanoprotrusions corresponding to solitary nanobubbles, quasi-periodic arrangements of a tight cellular structure and more spaced round-shaped patterns, corresponding to “dry” and “wet” quasi-2D micro- and nanofoams, respectively, are identified. Although randomly spread solitary nanobubbles can occupy up to 30% of an immersed solid surface, their self-organization in a quasi-2D nanofoam leads to surface gas coverage reaching up to 80%, which implies significantly lowered surface wetting. Existence of a submersed quasi-2D nanofoam thus opens the novel question on the impact of dense surface nanobubble assemblies on heterogeneous processes at the solid–liquid interface. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0309576
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