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Related Experiment Video

Updated: May 27, 2026

Microbubble Fabrication of Concave-porosity PDMS Beads

Microbubble Fabrication of Concave-porosity PDMS Beads

Published on: December 15, 2015

Mesoporous hollow spheres from soap bubbling.

Xianglin Yu¹, Fuxin Liang, Jiguang Liu

¹State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

Journal of Colloid and Interface Science

|November 15, 2011

Summary

Researchers created hollow spheres using silica sol and bubble templates. This method, utilizing gas flow dynamics and co-assembly with surfactants, enables the formation of mesostructured shells for various materials.

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Published on: January 25, 2018

Area of Science:

Materials Science
Nanotechnology
Colloid and Surface Chemistry

Background:

Large bubbles can be ruptured to form smaller, more stable bubbles.
Hollow spheres are desirable structures in materials science for various applications.
Bubble blowing is a potential method for templating hollow structures.

Purpose of the Study:

To develop a method for preparing hollow spheres using silica sol and bubble templating.
To investigate the formation of mesostructured shells during the sol-gel process.
To understand the key parameters influencing the morphology of the hollow spheres.

Main Methods:

Bubbling a silica sol in the presence of a bubble blowing agent.
Utilizing the trapped gas within bubbles as a template.
Introducing a porogen (surfactant) for mesostructured shell formation via co-assembly during sol-gel process.
Controlling interior and exterior gas flow rates.

Main Results:

Hollow spheres were successfully prepared using the bubble templating method.
Mesostructured shells were formed through the co-assembly of silica sol and surfactant.
Specific gas flow rates (intermediate interior, high exterior) were found to be crucial for hollow sphere formation.
The method demonstrated versatility across inorganic, polymer, and composite materials.

Conclusions:

The described bubble templating method is effective for synthesizing hollow spheres with mesostructured shells.
The process relies on controlled gas flow and sol-gel co-assembly.
This technique offers a versatile route for creating advanced hollow materials.