Oxygen Microbubble Generator Enabled by Tunable Catalytic Microtubes

Rolled‐up catalytic Ti/Cr/Pt microtubes, consisting of inorganic nanomembranes integrated on‐chip, are used to generate oxygen microbubbles in solutions of hydrogen peroxide. Oxygen bubble parameters (frequency, radius and volumetric flow rate) are optimized at different concentrations of hydrogen p...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry, an Asian journal an Asian journal, 2019-07, Vol.14 (14), p.2431-2434
Main Authors: Naeem, Sumayyah, Naeem, Farah, Liu, Jinrun, Quiñones, Vladimir A. Bolaños, Zhang, Jing, He, Le, Huang, Gaoshan, Solovev, Alexander A., Mei, Yongfeng
Format: Article
Language:English
Subjects:
Aspect ratio
Bubbles
Catalysis
catalyst
Chemistry
Flow velocity
Hydrogen peroxide
microtubes
Oxygen
Tubes
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Rolled‐up catalytic Ti/Cr/Pt microtubes, consisting of inorganic nanomembranes integrated on‐chip, are used to generate oxygen microbubbles in solutions of hydrogen peroxide. Oxygen bubble parameters (frequency, radius and volumetric flow rate) are optimized at different concentrations of hydrogen peroxide and common dish soap. Increasing the aspect ratio of the microtube (e.g., tube length/diameter) leads to the formation of smaller bubbles, but at higher frequencies. Longer tubes produce less total oxygen volume in comparison to shorter tubes. We attribute this observation to the specific dynamic behaviours of bubbles in tubes. Ready to roll: Rolled‐up catalytic Ti/Cr/Pt microtubes are used to generate oxygen microbubbles using the decomposition of hydrogen peroxide. Microtubes with different lengths in the range of 20–120 μm are tested to optimize parameters, such as oxygen bubble size, bubble frequency, total oxygen volume, and influence of surfactants and concentrations of peroxide fuel. Longer tubes generate bubbles at higher frequencies, but produce less total oxygen gas.
ISSN:1861-4728
1861-471X
DOI:10.1002/asia.201900418