Advanced Materials for NH3 Capture: Interaction Sites and Transport Pathways

Abstract Ammonia (NH 3 ) is a carbon-free, hydrogen-rich chemical related to global food safety, clean energy, and environmental protection. As an essential technology for meeting the requirements raised by such issues, NH 3 capture has been intensively explored by researchers in both fundamental and applied fields. The four typical methods used are (1) solvent absorption by ionic liquids and their derivatives, (2) adsorption by porous solids, (3) ab-adsorption by porous liquids, and (4) membrane separation. Rooted in the development of advanced materials for NH 3 capture, we conducted a coherent review of the design of different materials, mainly in the past 5 years, their interactions with NH 3 molecules and construction of transport pathways, as well as the structure–property relationship, with specific examples discussed. Finally, the challenges in current research and future worthwhile directions for NH 3 capture materials are proposed.