Fig. 4From: Potassium citrate-derived porous carbon with high CO2 capture and Congo red adsorption performancea CO2 adsorption isotherms and b SBET vs CO2 uptake with a fitting line of PCMCA-X samples at 0 °C. c Qst of PCMCA-900. d CO2 capture mechanism of PCMCA-900. e CO2 uptake capacities at various temperatures (0 °C, 25 °C, and 50 °C) at 1 bar and f recyclability of PCMCA-900Back to article page