下降(电信)
气泡
氢
浮力
材料科学
化学物理
化学工程
乳状液
毛细管作用
水溶液
阻力
马朗戈尼效应
双水相体系
微气泡
化学
机械
对流
复合材料
有机化学
物理
声学
工程类
超声波
电信
计算机科学
作者
Kangkana Kalita,Benhua Zeng,Jae Bem You,Yifan Li,Anotidaishe Moyo,Ben Bin Xu,Xuehua Zhang
出处
期刊:Small
[Wiley]
日期:2024-04-21
标识
DOI:10.1002/smll.202400849
摘要
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.
科研通智能强力驱动
Strongly Powered by AbleSci AI