Insight into the Photocatalytic Mechanism of Tin Dioxide/Polyaniline Nanocomposites for NO Degradation under Solar Light

This is the first time the SnO2/PANI nanocomposite was utilized for the nitrogen oxide (NO) photocatalytic degradation. In addition, the properties of the SnO2/PANI nanocomposite were deeply studied by various characterizations. The results showed that the photostability of PANI has been improved and the SnO2/PANI nanocomposite demonstrated the efficient NO photocatalytic degradation. Notably, in this work, the adsorption and photocatalytic mechanisms, polymer photodegradation, and the band structure of the SnO2/PANI nanocomposite were fully and systematically investigated via experimental measurements and density functional theory (DFT).