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CO2 capture and storage is a potential means to alleviate global warming and ocean acidification. Herein, CO2 capture with various functionalized graphanes and the effects of functional groups are investigated by density functional theory (DFT). Our results show that CO2 adsorbs weakly on a bare graphane sheet, and absorbs slightly better when functionalized with P-substituted graphane, and inc...

• Only 60 °C coupled with purge gas regenerates amine-based adsorbent by over 85%. Coupling TVSA is beneficial in terms of CO 2 productivity. can have lower specific energy requirement than closed TVSA. Using air and 100 during regeneration significantly decreases capacity. Mild temperature a viable direct capture process option. Comparison different options for (DAC) has usually been limited t...

Cellulose nanofibril (CNF) aerogels with grafted beta-cyclodextrin (β-CD) were prepared for the adsorption of phenol pollutants from water. Compared with regular wood fibers, CNF aerogel not only can immobilize more β-CDs, but also it provides higher porosity and a larger specific surface area for phenol absorption. The CNF-CD aerogel becomes mechanically robust through chemical crosslinking. I...

The utilization of supported amines as adsorbents in direct air capture (DAC) has been demonstrated to be a promising strategy for the reduction CO2 emissions. To improve performance amine-based adsorbents, incorporation additives widely adopted. In present study, we conduct comprehensive comparison seven on tetraethylenepentamine-impregnated mesoporous silica representative adsorbent. results ...