Spontaneous Rise of Hydrogen Microbubbles in Interfacial Gas Evolution Reaction
Abstract: Liquid organic hydrogen carrier is a promising option for the transport and storage of hydrogen as a clean energy source. This study examines the stability and behavior of organic drops immobilized on a substrate during an interfacial hydrogen‐evolution reaction (HER) at the drop surface and its surrounding aqueous solution. Hydrogen microbubbles form within the drop and rise to the drop apex. The growth rate of the hydrogen in‐drop bubble increases with the concentration of the reactant in the surrounding medium. The drop remains stable till the buoyancy acting on the in‐drop bubble is large enough to overcome the capillary force and the external viscous drag. The bubble spontaneously rises and carries a portion drop liquid to the solution surface. These spontaneous rising in‐drop bubbles are detected in measurements using a high‐precision sensor placed on the upper surface of the aqueous solution, reversing the settling phase from phase separation in the reactive emulsion. The finding from this work provides new insights into the behaviors of drops and bubbles in many interfacial gas evolution reactions in clean technologies.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Spontaneous Rise of Hydrogen Microbubbles in Interfacial Gas Evolution Reaction ; day:21 ; month:04 ; year:2024 ; extent:13
Small ; (21.04.2024) (gesamt 13)
- Urheber
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Kalita, Kangkana
Zeng, Binglin
You, Jae Bem
Li, Yifan
Moyo, Anotidaishe
Xu, Ben Bin
Zhang, Xuehua
- DOI
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10.1002/smll.202400849
- URN
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urn:nbn:de:101:1-2404221406304.195672579133
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 11:00 MESZ
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Beteiligte
- Kalita, Kangkana
- Zeng, Binglin
- You, Jae Bem
- Li, Yifan
- Moyo, Anotidaishe
- Xu, Ben Bin
- Zhang, Xuehua
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