Author(s)

Lijun Jia, Bo Liang, Cheng Li, Kai Zhu, Jie Guan, Guilan Gao and Yingjie Li

Corresponding Author

Bo Liang

ABSTRACT

Based on the microscopic reaction of gaseous pollutants from motor vehicles on the surface of Metal particles, the adsorption states of NOx and SO2 on the surface of metal oxides under different conditions were simulated by diffuse reflectance infrared spectroscopy. The results show that NOx, SO2, and mixed NOx / SO2 gas react with oxygen vacancies and coordinated oxygen of Fe3+, respectively, and finally adsorb on the Fe2O3 surface in different forms of nitrate and sulfate. The surface pre adsorption water, the adsorption of nitrate and the catalytic reduction of Fe2O3 will affect the heterogeneous oxidation of SO2. It is revealed that the emissions of motor vehicles contribute to the formation of fine particles in the atmosphere, which needs to be controlled at the source.

KEYWORDS

DRIFTS, atmospheric fine particulate matter, NOx, SO2