Regulating Adsorption Behaviors in Crystalline Porous Materials by External Electric Fields

The regulation of adsorption behaviors in crystalline porous materials (CPMs) using external electric fields (E-fields) is an emerging field. CPMs are highly valued for their large surface area, well-ordered pore structures, and chemical versatility, making them ideal for applications in adsorption/separation, catalysis, and biomedicine. In this review, the mechanisms underlying the E-field-induced structural and functional modifications in CPMs, such as phase transitions, framework distortions, and alterations in pore accessibility and selectivity, are delved into. Through a comprehensive analysis, the adsorption behaviors influenced by E-field regulation are classified into three main categories: selective molecular adsorption, selective ion adsorption, and the diffusion/transportation of molecules and ions. Furthermore, in this review, the current landscape of research in this area, highlighting the challenges and future directions for developing E-field-regulated adsorbents is critically assessed. In this work, it is aimed to summarize recent advances and identify gaps in the understanding of E-field effects on CPMs, providing a foundation for the rational development of next-generation materials with E-field modulated functionalities.