CO2 is one of main greenhouse gases. As a continuous increase in CO2 concentration in the atmosphere, the contribution of CO2 to the greenhouse effect is considered to be severe. Therefore, the capture and sequestration of CO2 are an important issue that has drawn global attention. Adsorption-based separation is considered to be one of the most effective technologies to capture CO2 from industrial emissions. It is of great importance to develop an efficient CO2 sorbent with a high CO2 adsorption capacity, a...