The surface potential explains ion specific bubble coalescence inhibition
نویسندگان
چکیده
منابع مشابه
A Microfluidic Method for Investigating Ion-Specific Bubble Coalescence in Salt Solutions.
This paper reports the direct and precise measurement of bubble coalescence in salt solutions using microfluidics. We directly visualized the bubble coalescence process in a microchannel using high-speed imaging and evaluated the shortest coalescence time to determine the transition concentration of sodium halide solutions. We found the transition concentration is ion-specific, and the capacity...
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Coalescing bubbles are known to produce a pulse of sound at the moment of coalescence, but the mechanism driving the sound production is uncertain. A candidate mechanism for the acoustic forcing is the rapid increase in the bubble volume, as the neck of air joining the two parent bubbles expands. A simple model is presented here for the volume forcing caused by the coalescence dynamics, and its...
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A simple modality is suggested to include, in the framework of a modified Poisson-Boltzmann approach, specific ion effects via the change in the ion hydration between the bulk and the vicinity of the surface. This approach can account for both the depletion of the interfacial region of structure-making ions as well as for the accumulation of structure-breaking ions near the interface. Expressio...
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ژورنال
عنوان ژورنال: Journal of Colloid and Interface Science
سال: 2021
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2021.04.144