Preparation of the Na2CO3–Carbon Nanocomposite and Its CO2 Capture

A Na 2 CO 3 –carbon nanocomposite (NaC-NC) was prepared from terephthalic acid and NaOH, and its CO 2 capture under moist conditions was examined by thermogravimetric analysis and X-ray diffraction. CO 2 capture was repeated twice. The first CO 2 capture reaction of bulk Na 2 CO 3 was faster than its second, while the second capture reaction of NaC-NC was faster than its first. This may be because of the nanostructural properties of NaC-NC. The regeneration from NaHCO 3 to Na 2 CO 3 of NaC-NC proceeded at a lower temperature than with the bulk NaHCO 3 . Thus, compared with the bulk Na 2 CO 3, we found that NaC-NC could efficiently capture CO 2, increasing the reaction rate and decreasing the regeneration temperature.