Reinforced nitrogen oxide gas adsorption by sulfur ionic treatment
Jeon., Y.-P., Lee, S.-W., Song, J.-Y., Park, Y.-Y., Lee, E.-J., Jeon, O.-S., Kang, S.-H., Byun, C.-W., Kim, J., Park, S.-Y., Yoo, Y.-J., Yang, K.-H.
Journal of the Korean Physical Society, 79, 1051 (2021)
DOI:10.1007/s40042-021-00317-6
Abstract
To obtain a material that adsorbs nitrogen oxide (NOx) gas with high efficiency, we used sulfuric acid (H2SO4)-treated activated carbon (AC). The proposed H2SO4-treated AC was treated by dipping and spray coating in a H2SO4 solution. For structural analysis, scanning electron microscopy and Brunauer–Emmett–Teller measurements were performed on general and H2SO4-treated ACs. The composition of the atoms on the surface and inner pore structure of both ACs was confirmed through energy dispersive X-ray spectroscopy measurements. From the structural analysis, it was confirmed that the structure of H2SO4-treated AC was similar to that of general AC, indicating that it was not affected by the H2SO4 solution. There was no significant difference in the inner pore structures of general and H2SO4-treated ACs through specific surface area analysis, which indicates that the physical adsorption of NOx gas for the H2SO4-treated AC is similar to that of general AC. ba