Application and Challenge of Metal/Covalent Organic Frameworks in Ammonia Sorption and Separation.

As both a critical chemical feedstock and an environmental pollutant, the production and utilization of ammonia (NH) are accompanied by the progress of social civilization. In recent years, research on metal/covalent organic framework materials as NH adsorbents has attracted increasing attention due to their high porosity, versatile architecture and tunable functionality. This review was organized to highlight the recent advancement of MOF/COF materials for NH sorption, which successively presented the key properties of solid adsorbents and summarized the strategies along with their mechanisms for enhancing NH adsorption. In addition, perspectives and outlook regarding the future development of MOF/COF-based NH adsorbents were outlined to meet the requirements of practical applications under various condition.