Inverse Pickering Emulsion Stabilized by Binary Particles with Contrasting Characteristics and Functionality for...

Area of Science:

• Biocatalysis
• Materials Science
• Colloid and Surface Chemistry

Background:

• Water-in-oil (w/o) Pickering emulsions are valuable for biphasic enzymatic catalysis due to stability and ease of separation.
• Current methods often lead to increased diffusional resistance or enzyme leaching and activity loss.

Purpose of the Study:

• To develop a new Pickering interfacial biocatalysis platform for efficient enzyme encapsulation and enhanced catalytic performance.
• To overcome limitations of existing enzyme immobilization techniques in w/o Pickering emulsions.

Main Methods:

• Utilized w/o Pickering emulsions stabilized by a binary system of hard silica and soft, pH-responsive microgel particles.
• Demonstrated the ability of microgels to stabilize emulsions, encapsulate enzymes, and facilitate interfacial catalysis.
• Investigated the role of silica nanoparticles in improving emulsion structure.

Main Results:

• Successfully created a Pickering interfacial biocatalysis platform with efficient enzyme encapsulation.
• pH-responsive microgels effectively catalyzed reactions at the water/oil interface.
• Binary particle stabilization with silica nanoparticles significantly improved emulsion structure and stability.

Conclusions:

• The developed platform offers efficient enzyme encapsulation and high catalytic performance in w/o Pickering emulsions.
• pH-responsive microgels are effective for interfacial biocatalysis and emulsion stabilization.
• This approach provides a new avenue for w/o Pickering emulsion preparation and biphasic catalysis.