Preparation method and application of one-step biomimetic beetle catalytic membrane

A biomimetic beetle catalytic membrane was prepared by a one-step method. A hydrophilic catalyst was embedded in the PET membrane using a non-solvent-induced phase separation method to form a heterogeneous wetting structure. This method solved the problems of complex preparation and unstable performance in the existing technology, and achieved efficient oil-water separation and catalytic degradation, while reducing costs.

CN121715060BActive Publication Date: 2026-06-23EAST CHINA JIAOTONG UNIVERSITY
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA JIAOTONG UNIVERSITY
Filing Date
2026-02-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing biomimetic catalytic membranes suffer from complex fabrication processes, poor structural stability, and insufficient functional synergy, resulting in unstable performance and high costs, making it difficult to achieve efficient oily wastewater treatment.

Method used

A one-step molding process using hydrophilic nanocatalysts and polyethylene terephthalate casting solution was employed. A biomimetic beetle structure was formed using a non-solvent-induced phase separation method, enabling spontaneous embedding of the catalyst on the membrane surface and within the pores, thus constructing a heterogeneous wettable structure.

Benefits of technology

It simplifies the preparation process, improves the structural stability and functional synergy of the membrane, enhances oil-water separation efficiency and catalytic degradation performance, and reduces production costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121715060B_ABST
    Figure CN121715060B_ABST
Patent Text Reader

Abstract

The application belongs to the technical field of separation membrane materials, and relates to a preparation method of a one-step biomimetic beetle catalytic membrane and application thereof, the preparation method comprising directly dispersing a hydrophilic nano catalyst in a PET trifluoroacetic acid casting solution, and one-step forming through a non-solvent induced phase separation technology. In the phase inversion process, the catalyst is spontaneously segregated and anchored on the membrane surface and in the pores, forming a "hydrophilic protrusion-hydrophobic substrate" heterogeneous wetting structure similar to the back of a desert beetle, realizing one-step in-situ integration of the membrane matrix, biomimetic morphology and catalytic function. The prepared membrane has excellent oil-water separation performance and catalytic degradation capacity, the separation efficiency of the oil-in-water emulsion is greater than 99.5%, and the organic pollutants can be rapidly degraded in the presence of hydrogen peroxide. The application has the advantages of simple and efficient process, low cost and stable structure, and is suitable for deep treatment and synchronous purification of complex oily wastewater.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • CN115672060A

  • CN121490575A