3D Self‐Supporting Porous Magnetic Assemblies for Water Remediation and Beyond

In the past few years, three-dimensional self-supporting porous magnetic assemblies (3D-SPMAs) have emerged as a new research area in materials science because of their combined features of three-dimensional self-supporting porous assemblies (3D-SPAs) and magnetic materials. Due to these attributes, 3D-SPMAs gain numerous tempting properties such as magnetism-induced actuating, magnetic shape memory effects, and alternative magnetic field (AMF) induced heat generation, showcasing huge potential in diverse applications stretching over water remediation, actuators, biomedical therapy, etc. Especially, 3D-SPMAs displayed eminent potential in water remediation for their large processing capacity, remote controllability, and magnetic-field-mediated wettability. With the rising interest in 3D-SPAs, the increasing understanding of magnetic materials, and the flourish of materials preparation technique, an upsurge has appeared in 3D-SPMAs and thus managing them a class of emerging and promising functional materials. However, currently there are rarely review papers concerning 3D-SPMAs. In this light, this review aims to express a comprehensive overview of this young field and fuel further innovations for preparation methods and practical applications of 3D-SPMAs. The focus is placed on the synthetic strategies and applications especially in water remediation. The potential opportunities and challenges are also discussed.