(648e) Enhanced CO2 Capture Performance Using Piperazine/PAN/MIL-101(Cr,Mg) Fiber Mats

Metal organic framework MIL-101(Cr, Mg) stands out for its exceptional resistance to moisture, heat, and chemical factors. Utilizing an electrospinning technique, we produced piperazine-loaded polyacrylonitrile (PAN)/MIL-101(Cr, Mg) fiber mats with varying concentrations of piperazine (10%, 20%, and 30%) in the polymer solution. The incorporation of piperazine enhanced the adsorption capacity and selectivity of the PAN/MIL-101 fiber mats by improving the interaction between CO₂ molecules and the amine sites of piperazine. Among the fabricated mats, PAN/MIL-101–20% showed superior CO₂ adsorption capacity (2.48 mmol/g) and CO₂/N₂ selectivity (38), surpassing those of the piperazine-free fiber mat by 2.4 and 2.9 times, respectively. Furthermore, the PAN/MOF fiber mat exhibited robust stability against humid air and NO₂ gas, maintaining consistent CO₂ capture performance across ten adsorption-desorption cycles.