Oriented Interpenetrating Capillary Network with Surface Engineering by Porous ZnO from Wood for Membrane...

Area of Science:

• Materials Science
• Chemical Engineering
• Nanotechnology

Background:

• Membrane emulsification offers controllable droplet size and narrow distribution.
• Membrane pore structure and surface engineering are critical for high-quality emulsions and throughput.
• Wood's natural capillary network presents an underutilized template for advanced membrane design.

Purpose of the Study:

• To develop an advanced emulsion membrane using wood's natural capillary structure.
• To engineer wood channel surfaces with a ZnO layer for enhanced microfluid mixing.
• To evaluate the impact of the wood capillary network and ZnO modification on emulsion quality and throughput.

Main Methods:

• Fabrication of an emulsion membrane utilizing an oriented interpenetrating capillary network from wood cell lumens.
• Surface reconstruction of wood channels using a honeycomb porous ZnO layer via seed prefabrication-hydrothermal growth.
• Characterization of emulsion droplet size, distribution, and emulsifying throughput.

Main Results:

• The wood capillary mesh microstructure produced emulsions with smaller droplet sizes and narrower distributions.
• High throughput emulsification was achieved due to the wood's unique structure.
• The ZnO layer further improved emulsion quality while maintaining high throughput, indicating intensified microfluid convection.

Conclusions:

• Wood-based membranes with engineered surfaces offer a sustainable and effective platform for advanced emulsion preparation.
• The combination of natural capillary networks and surface modification provides a novel approach to enhance microfluidic processes.
• This work opens new avenues for functional applications of wood in materials science and chemical engineering.