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Constructing sponge-like structured molecularly imprinted composite membranes for acteoside separation.

Yuchen Ma¹, Chen Chen¹, Qingxin Wu¹

¹School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, Xinjiang, 832003, China. lihaojie@shzu.edu.cn.

|November 19, 2025

Summary

This summary is machine-generated.

This study introduces sponge-like molecularly imprinted composite membranes (SMICMs) using hollow mesoporous carbon spheres (HMCs). These novel membranes significantly enhance acteoside (ACT) separation performance through improved structure and selectivity.

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Area of Science:

Materials Science
Chemical Engineering
Separation Science

Background:

Molecularly imprinted composite membranes (MICMs) often face limitations in separation performance due to suboptimal microstructural design.
Acteoside (ACT) separation is crucial in natural product extraction, requiring efficient and selective membrane technologies.

Purpose of the Study:

To develop enhanced molecularly imprinted composite membranes (MICMs) for improved acteoside (ACT) separation.
To investigate the role of hollow mesoporous carbon spheres (HMCs) in creating a sponge-like structure within MICMs.

Main Methods:

Incorporation of hollow mesoporous carbon spheres (HMCs) into the MICM matrix to create a sponge-like structure (SMICMs).
Characterization of the SMICM morphology, pore structure, and specific surface area.
Evaluation of ACT adsorption capacity, adsorption selectivity, and permeation selectivity.

Main Results:

The sponge-like structure induced by HMCs provided a large specific surface area, increasing ACT-specific imprinted sites and adsorption selectivity.
An interconnected hierarchical pore network and cavities within HMCs offered ample storage space, leading to high ACT adsorption capacity (177.3 mg g⁻¹).
SMICMs demonstrated significantly enhanced permeation selectivity (9.62) due to synergistic effects of surface morphology, pore structure, and imprinted sites.

Conclusions:

The novel sponge-like structured molecularly imprinted composite membranes (SMICMs) offer a promising approach for efficient ACT separation.
Hollow mesoporous carbon spheres (HMCs) are effective in optimizing membrane architecture for enhanced separation performance.
This development provides a new strategy for the selective separation of natural products using advanced membrane technology.