Characterization of Polymeric Solutions with TiO₂ Photocatalytic Conversion Efficiency Exposed to Different CO₂ Sources

Atmospheric pollution is the main environmental and health hazard in several countries, and the World Health Assembly approved the WHA68.8 resolution in which were PM₁₀, PM_2.5, NO₂, O₃, and SO₂ are identified as the main regulated atmospheric pollutants. Thus, the present paper characterizes the photocatalytic reaction efficiency of two polymeric solutions (used as vinylic and waterproofing paint) that have TiO₂ as photocatalytic active when being exposed to different CO₂ sources. Using an Air Pollution Monitor for measuring NO_x, SO_x, and CO₂, the decreasing of this pollutant was proved. In addition, SEM (Scanning Electron Microscopy) was used for measuring the adherence quality of the paint to the substrate and the changes in the surfaces where the solutions were applied. It was found the conversion velocity was greater when the CO₂ was emitted by a vehicle than when coming from a polymer combustion.