Ordered nanoporous carbon for increasing CO ₂ capture

Ordered nanoporous carbons (ONCs) were prepared using a soft-templating method. The prepared ONCs materials were subjected to a controlled carbonization temperature over the temperature range, 700-1000 °C, to increase the specific surface area and total pore volume of ordered nanoporous carbon followed by carbonization of the phenolic resin. ONCs materials synthesized at various carbonization temperatures were used as adsorbents to improve the CO ₂ adsorption efficiency. The surface properties of the ONCs materials were examined by X-ray photoelectron spectroscopy. The structural properties of the ONCs materials were analyzed by X-ray diffraction. The textural properties of the ONCs materials were examined using the N ₂/77 K adsorption isotherms according to the Brunauer-Emmett-Teller equation. The CO ₂ adsorption capacity was measured by CO ₂ isothermal adsorption at 298 K/30 bar and 298 K/1 bar. The carbonization temperature was found to have a major effect on the CO ₂ adsorption capacity, resulting from the specific surface area and total pore volumes of the ONCs materials.