Tempospatially Confined Catalytic Membranes for Advanced Water Remediation

Abstract

The application of homogeneous catalysts in water remediation is limited by factors such as their excessive chemical and energy input, weak regenerability, and potential leaching. Heterogeneous catalytic membranes (CMs) offer a new approach to facilitating efficient, selective, and continuous pollutant degradation. Thus, integrating membranes and continuous filtration with heterogeneous advanced oxidation processes can promote thermodynamic and kinetic mass transfers in spatially confined intrapores and facilitate diffusion‐reaction processes. Despite the remarkable advantages of heterogeneous CMs, their engineering application has been practically restricted due to the fuzzy design criteria for specific applications. Herein, we critically review the recent advances in CMs for advanced water remediation and propose the design flow for tempospatially confined CMs. Further, we review state‐of‐the‐art CM materials and their catalytic mechanisms, after which we emphasize the tempospatial confinement mechanisms comprising the nanoconfinement effect, interface effect, and kinetic mass transfer, thus clarifying their roles in the construction and performance optimization of CMs. Additionally, we summarize the fabrication methods for CMs based on their catalysts and pore sizes and present an overview of their application and performance evaluations. Finally, we present future directions for CMs in materials research and water treatment.This article is protected by copyright. All rights reserved