Li et al. (2023): An efficient biochar adsorbent for CO2 capture: Combined experimental and theoretical study on the promotion mechanism of N-doping

Hongxian Li, Minghui Tang, Xinlei Huang, Ling Wang, Qi Liu, Shengyong Lu IN: Chemical Engineering Journal 466, 143095, https://doi.org/10.1016/j.cej.2023.143095

Although many N-doped carbon materials have been prepared for CO2 adsorption in recent years, the promotion mechanism has not been clearly proposed. In this study, a series of N-doped biochars were successfully prepared by a facile solvent-free method. Among them, the biochar prepared with corncob powder, K2CO3 and urea at 800 °C showed the highest adsorption capacity (5.69 mmol/g at 0 °C and 1 bar) and selectivity (38.24 at CO2/N2 = 10/90).

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