Metal-loaded vertical array light lanthanum-fluoride-based nanosheet catalytic membrane and preparation method

By using a vertical array of lightly fluorinated lanthanum-based nanosheet catalytic membranes loaded with metal, problems such as uneven catalyst dispersion and high mass transfer resistance were solved, achieving efficient catalytic degradation of organic pollutants in water, which is suitable for large-scale production.

CN122377313APending Publication Date: 2026-07-14TIANJIN POLYTECHNIC UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN POLYTECHNIC UNIV
Filing Date
2026-05-12
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, catalysts used in wastewater treatment suffer from problems such as uneven dispersion, insufficient exposure of active sites, high mass transfer resistance, and low catalytic efficiency. Furthermore, two-dimensional materials tend to agglomerate during the stacking process on the membrane surface, making it difficult to achieve large-scale preparation.

Method used

A vertical array of lightly fluorinated lanthanum-based nanosheets with loaded metals is used as the catalyst film. The lightly fluorinated lanthanum nanosheet array is grown in situ through bidirectional diffusion, and metal active species are uniformly loaded on its surface to form an 0D/3D multidimensional channel structure. This avoids the stacking and aggregation of nanosheets and improves the exposure rate of active sites and the light source capture efficiency.

Benefits of technology

It significantly reduces mass transfer resistance, improves catalytic efficiency, and achieves efficient degradation of organic micropollutants in water. The preparation process is simple and controllable, making it suitable for large-scale production.

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Abstract

The application discloses a metal-loaded vertical array light lanthanum fluoride-based nanosheet catalytic membrane and a preparation method, and belongs to the technical field of catalytic membrane materials. The catalytic membrane comprises a base film, a light lanthanum fluoride-based nanosheet array in-situ vertically grown on the surface of the base film, and metal active species loaded in pores. The catalytic membrane prepared by the application has a uniform distribution and a topological structure nanosheet vertical light lanthanum fluoride-based nanosheet array layer grown on the surface, and simultaneously loads metal active species catalysts in the array layer. The catalytic membrane exhibits high catalytic activity and stability in the field of heterogeneous Fenton catalysis, photocatalysis, and photo-Fenton synergistic catalytic degradation of organic pollutants in water bodies, and the catalytic membrane is easy to separate from wastewater and can be recycled.
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