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Phosphorylated/amine-impregnated cellulosic paper for direct CO2 capture
Materials Chemistry and Physics ( IF 4.6 ) Pub Date : 2024-04-05 , DOI: 10.1016/j.matchemphys.2024.129298 Soukaina Lamnini , Sif eddine Jabor Tlemcani , Hicham Akaya , Zouhair Hanani , Mounir El Achaby , Houssine Sehaqui , Johan Jacquemin
Materials Chemistry and Physics ( IF 4.6 ) Pub Date : 2024-04-05 , DOI: 10.1016/j.matchemphys.2024.129298 Soukaina Lamnini , Sif eddine Jabor Tlemcani , Hicham Akaya , Zouhair Hanani , Mounir El Achaby , Houssine Sehaqui , Johan Jacquemin
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A scalable papermaking process was employed herein to manufacture cellulosic papers from native and phosphorylated cellulose microfibers (referred to as CMF and PCMF, respectively) impregnated with polyethyleneimine (PEI) for Direct Air Capture (DAC) applications. These papers were analyzed in terms of their physico-chemical properties using several techniques. The impact of PEI content on desorbing the co-adsorbed HO and CO from the air, as well as on the anisotropic microporous network, was explicitly analyzed. The results indicated that phosphorylation promotes the uptake of both CO and HO in the corresponding neat and PEI-loaded papers, reaching a superior CO adsorption capacity of ∼0.7–0.9 mmol.g for PCMF papers versus 0.07–0.3 mmol.g for CMF papers. Furthermore, the CMF and PCMF papers exhibited HO adsorption capacities in the range of 1.5–1.8 mmol.g and 2.2–3.8 mmol.g, respectively. This work further highlights the combined role of phosphorylation and favorable PEI impregnation in tuning the cellulose CO adsorption properties under humid conditions, facilitating the rapid release of the adsorbed CO under mid conditions.
更新日期：2024-04-05
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