Early View e202509503
Review

Janus Superiority of Membranes in Chemical Engineering and Beyond

Prof. Hao-Cheng Yang

Corresponding Author

Prof. Hao-Cheng Yang

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

The “Belt and Road” Sino-Portugal Joint Lab on Advanced Materials, International Research Center for X Polymers, Zhejiang University, Hangzhou, 310058 P.R. China

Both authors contributed equally to this work.

E-mail: [email protected], [email protected], [email protected]

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Yi-Zhou Chen

Yi-Zhou Chen

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

Both authors contributed equally to this work.

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Kai Li

Kai Li

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

The “Belt and Road” Sino-Portugal Joint Lab on Advanced Materials, International Research Center for X Polymers, Zhejiang University, Hangzhou, 310058 P.R. China

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Xin-Yu Guo

Xin-Yu Guo

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

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Qi-Rui Jiang

Qi-Rui Jiang

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

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Dr. Seth B. Darling

Corresponding Author

Dr. Seth B. Darling

Center for Molecular Engineering, Chemical Sciences and Engineering Division and Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center, Argonne National Laboratory, Lemont, IL, 60439 USA

Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637 USA

E-mail: [email protected], [email protected], [email protected]

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Prof. Zhi-Kang Xu

Corresponding Author

Prof. Zhi-Kang Xu

MOE Engineering Research Center of Membrane and Water Treatment Technology, and Key Lab of Adsorption and Separation Materials & Technologies of Zhejiang Province, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058 P.R. China

The “Belt and Road” Sino-Portugal Joint Lab on Advanced Materials, International Research Center for X Polymers, Zhejiang University, Hangzhou, 310058 P.R. China

E-mail: [email protected], [email protected], [email protected]

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First published: 30 June 2025

Graphical Abstract

This review explores the Janus superiority of membrane materials in chemical engineering processes, with a focus on their design and fabrication principles, transport mechanisms, and diverse applications. It highlights their roles in chemical engineering and their multiscale impacts and concludes by discussing current challenges and future research directions.

Abstract

Janus configurations, characterized by their inherent asymmetry, enable directional mass transfer in membrane materials that drive novel and energy-efficient chemical processes. This Janus superiority spans applications from nanoscale molecular and ionic transport to macro-scale separation systems with asymmetric spatial architectures. This review provides an analysis of the material foundations including design principles, structure regulation, and scalability challenges underlying Janus membranes. We explore the physics that governs their unique behavior and examine their diverse applications across chemical engineering, including phase transfer, and molecular or ionic transport. Through a multiscale perspective, we provide a comprehensive understanding of the impact of Janus superiority in advancing chemical engineering technologies. Finally, we discuss the hurdles in translating theoretical advances into practical applications and propose promising avenues for future research to harness the full potential of Janus membranes and systems in addressing global challenges related to energy, sustainability, and beyond.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.