Titania microparticles using a facile microfluidic mass-transfer control method

Zhao, Chun-Xia and Middelberg, Anton P. J. (2014) Titania microparticles using a facile microfluidic mass-transfer control method. Chemical Engineering Science, 112 10-14. doi:10.1016/j.ces.2014.03.009

Author Zhao, Chun-Xia
Middelberg, Anton P. J.
Title Titania microparticles using a facile microfluidic mass-transfer control method
Journal name Chemical Engineering Science   Check publisher's open access policy
ISSN 0009-2509
Publication date 2014-06-14
Sub-type Article (original research)
DOI 10.1016/j.ces.2014.03.009
Open Access Status Not yet assessed
Volume 112
Start page 10
End page 14
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Subject 1500 Chemical Engineering
1600 Chemistry
2604 Applied Mathematics
2209 Industrial and Manufacturing Engineering
Abstract Droplet microfluidics has found many applications in chemical reactions. In most of the studies, however, reactions are performed in droplet-based reactors either through introducing various reagent streams into a single droplet, or upon coalescence or merging of two droplets encapsulating different reagents. Here we introduce a facile microfluidic mass-transfer control approach for synthesizing titania microparticles using droplets as microreactors. Droplets of a water soluble and stable titania precursor aqueous solution, titanium(IV) bis(ammonium lactato)-dihydroxide (TiBALDH), were dispersed in an oil continuous phase containing a small amount of ethanol, which can precipitate TiBALDH and produce titania. Precipitation was initiated and controlled by the mass-transfer of ethanol from the continuous phase into the droplets. Titania particles with different degrees of compactness were formed and well encapsulated inside the droplets by varying the concentrations of TiBALDH in the droplet phase and ethanol in the continuous phase. This paper provides a new approach for synthesizing nanoparticles or microparticles in droplet microfluidics based on a mass-transfer control approach.
Keyword Droplet microfluidics
Mass transfer
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID DP110100394
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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