Enabling Ultrahigh Surface Area of Covalently-linked Organic Framework for Boosted CO₂ Capture: An Air Liquid Interfacial Plasma as Post-furnishing Protocol

The cognitive intent of a highly ordered and robust adsorbent is extremely sensible and, in this context, Covalent Organic Framework (COF) materials have significantly burgeoned their scope in diverse applications. Herein, a simple time-competent hydrothermal procedure is presented to construct a covalent framework with an ultrahigh surface area of 1428 m² /g that shows active adsorption of carbon dioxide (CO₂ ) at variable temperature ranges. Moreover, a facile scalably controlled post-synthetic air liquid interfacial plasma (ALIP) induced protocol is substantiated that explicitly amplifies the surface area of the pristine framework even to a higher value of 2051 m² /g. The post-synthetic plasma approach presented here led to the rapid enhancement of the surface area of the pristine COF by 43 %, which concurrently advances the CO₂ uptake up to 67 %. Hence, the current study may open up a new frontier in the design as well as fine-tune the properties of the covalent framework that unfolds the advanced outlook in addressing the challenges of CO₂ capture.