Continuous synthesis of monodisperse silica microspheres over 1 μm size

No Thumbnail Available
File version
Author(s)
Fei, Shian
Zhang, Yaheng
Zhang, Jie
Tang, Zhiyong
Wu, Qing
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2021
Size
File type(s)
Location
License
Abstract

This study presents a robust and scalable method for synthesizing continuously the silica microspheres via the Stöber method. Owing to the superb mixing accessible with gas-liquid segmented flow in coiled microtube, satisfactory morphology and mono-dispersity of silica spheres was obtained. The continuous method was firstly optimized through investigating the effects of various operation parameters on the morphology, particle size, size distribution and chemical structure of silica spheres. Without the surfactant, the size of silica spheres was limited < 850 nm due to the partial blockage of microchannel when synthesizing larger silica spheres. The addition of surfactant migrated the clogging issue, enabling the reliable synthesis of microspheres with diameters over 1 μm within a four times shorter residence time (30 min). Moreover, the mono-dispersity of silica microspheres could be further improved by increasing the gas/liquid ratio in segmented flow due to the more intensified mixing in liquid segments, as verified in visual flow field investigation.

Journal Title

Journal of Flow Chemistry

Conference Title
Book Title
Edition
Volume
Issue
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note

This publication has been entered in Griffith Research Online as an advanced online version.

Access the data
Related item(s)
Subject

Organic chemistry

Science & Technology

Physical Sciences

Chemistry, Multidisciplinary

Chemistry

Silica microsphere

Persistent link to this record
Citation

Fei, S; Zhang, Y; Zhang, J; Tang, Z; Wu, Q, Continuous synthesis of monodisperse silica microspheres over 1 μm size , Journal of Flow Chemistry, 2021

Collections