<b>Synthesis and Characterization of Boroxine-based COF-1 Material for CO</b>_{<strong>2</strong>}<b> Capture</b>

In this experimental study, COF-1 was synthesized using a sonochemical method involving 1,4-benzene diboronic acid (BDBA). The molecular structure of the compounds in COF-1 is determined using Nuclear magnetic resonance (NMR) and Fourier-transform infrared spectroscopy (FTIR) methods. The surface structure was studied using analytical techniques, including Scanning Electron Microscopy (SEM) and Scanning Electron Microscopy – Energy Dispersive X-ray analysis (SEM-EDX). The Brunauer-Emmett-Teller (BET) method was adopted to find the pore size and outer surface area of COF-1. From these analyses, the synthesized COF-1 thus confirmed the formation of a highly porous and crystalline structure composed of boroxine-linked phenylene units. The experimental studies on CO₂ adsorption were conducted using a vertical fixed-bed adsorption column. From the experimental trials, the post-adsorption analysis indicated physisorption of CO₂, with no structural degradation of the COF-1 framework. The results from the experiments and testing COF-1 after the adsorption study shows COF-1 as an efficient adsorbent for CO₂ capture under ambient conditions.