A REVIEW OF THE CURRENT TREND IN THE SYNTHESIS OF NITROGEN-RICH FUNCTIONAL POLYMERS FOR CARBON DIOXIDE ADSORPTION

Abstract

The consumption of fossil fuels (oil, coal, and natural gas) has increased due to the increasing demand for energy from various industries. The International Energy Agency, in its World Energy Outlook 2022, has noted a steady increase in global energy demand from fossil fuels from 350 EJ in 2000 to over 500 EJ in 2030. This increase has contributed significantly to the emission of greenhouse gases, mainly carbon dioxide (CO2), leading to global warming and climate change. Carbon capture by adsorption on polymeric adsorbents is a strategic approach to mitigate climate change by reducing CO2 concentration in the atmosphere. This review focuses on the preparation of various nitrogen-rich functional polymers, mainly polyamine, polyamide/polyimide, and covalent triazine framework. This article provides important information on improving the functionality of nitrogen-rich functional polymers for CO2 adsorption. Brief insights into the CO2 adsorption mechanism and molecular modeling using density functional theory are also included. The challenges and future recommendations are also addressed in this review.