Use of Periodic Mesoporous Organosilica-Benzene Adsorbent for CO 2 Capture to Reduce the Greenhouse Effect.

The CO ₂ adsorption of a phenylene-bridged ordered mesoporous organosilica (PMO-benzene) was analyzed. The maximum capture capacity was 638.2 mg·g ^-1 (0 °C and 34 atm). Approximately 0.43 g would be enough to reduce the amount of atmospheric CO ₂ in 1 m ³ to pre-industrial levels. The CO ₂ adsorption data were analyzed using several isotherm models, including Langmuir, Freundlich, Sips, Toth, Dubinin-Radushkevich, and Temkin models. This study confirmed the capability of this material for use in reversible CO ₂ capture with a minimal loss of capacity (around 1%) after 10 capture cycles. Various techniques were employed to characterize this material. The findings from this study can help mitigate the greenhouse effect caused by CO ₂ .