The CO₂ adsorption properties of synthesized sodium ferrites (α-NaFeO₂ and β-NaFeO₂) under air and CO₂ flows with various relative humidity (RH) were investigated. Thermogravimetry (TG) analysis showed the CO₂ adsorption reactions of α- and β-NaFeO₂ were promoted even at room temperature (RT) by increasing RH even in air with a low CO₂ concentration and the CO₂ reaction ratio of β-NaFeO₂ was larger than that of α-NaFeO₂. X-ray photo spectroscopy (XPS), X-ray diffractometry (XRD), and Fourier transform infrared spectroscopy (FTIR) clarified that Na₂CO₃·H₂O and NaHCO₃ were produced under air and CO₂ flows, respectively, and Na_1-xFeO₂ and α-Fe₂O₃ were produced for α- and β-NaFeO₂ after the CO₂ adsorption, respectively. The Na⁺ concentration and pH were rapidly increased by dispersing NaFeO₂ into distilled water. It was therefore found that a basic solution was formed on the surface of NaFeO₂ by the adsorption of water molecules on the surface, giving rise to the promotion of CO₂ adsorption of NaFeO₂ at as low as RT in atmospheres with low CO₂ concentrations.

该CO ₂合成钠铁氧体（α-NaFeO的吸附性能₂和β-NaFeO ₂）在空气下和CO ₂与各种相对湿度（RH）进行了调查流动。热重（TG）分析表明，CO ₂ α-和β-NaFeO的吸附反应₂通过用低的CO即使在空气增加RH即使在室温下（RT）促进₂浓度和CO ₂ β-NaFeO的反应比₂比α-NaFeO大₂。X射线光谱（XPS），X射线衍射（XRD）和傅立叶变换红外光谱（FTIR）证实Na ₂ CO₃ ·H· ₂ O和的NaHCO ₃在空气下和CO产生的₂流动，分别，和Na _1-x FeO的₂和的α-Fe ₂ ö ₃被生产为α-和β-NaFeO ₂的CO后₂分别吸附， 。通过将NaFeO ₂分散到蒸馏水中，Na ⁺浓度和pH值迅速增加。因此发现，通过在表面上吸附水分子，在NaFeO ₂的表面上形成碱性溶液，从而促进了NaFeO ₂的CO ₂吸附。在低CO ₂浓度的大气中以与RT一样低的温度进行。