Chemisorption of SO2 and NO2 gas over Na0.4MnO2 in ambient conditions: an experimental and theoretical study

Abstract

Na_0.4MnO₂ microrods were synthesized to adsorb 100 ppm of SO₂ and NO₂ at room temperature with the maximum uptake capacity of 78.7 and 42.3 mg g⁻¹, respectively. While SO₂ was oxidized to sulphate and bisulphate ions, NO₂ was converted to nitrite and nitrate ions via hydroxyl groups and Mnⁿ⁺ redox cycles.