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NOx-Reduction Performance Test for TiO2 Paint.
- Source :
- Molecules; Sep2020, Vol. 25 Issue 18, p4087, 1p
- Publication Year :
- 2020
-
Abstract
- In South Korea, the gradual increase in particulate matter generation has received significant attention from central and local governments. Exhaust gas, which contains nitrogen oxides (NO<subscript>x</subscript>), is one of the main sources of particulate matter. In this study, the reduction of NO<subscript>x</subscript> using a coating material mixed with a titanium dioxide (TiO<subscript>2</subscript>) photocatalyst was demonstrated. The NO<subscript>x</subscript> reduction performance of the TiO<subscript>2</subscript> photocatalyst-infused coating was evaluated by applying the ISO 22197-1: 2007 standard. Subsequently, the performance was evaluated by changing the NO gas concentration and ultraviolet (UV)-A irradiance under standard experimental conditions. It was determined that NO<subscript>x</subscript> reduction can be achieved even if the NO gas concentration and UV-A irradiance are lower than those under the standard conditions when the TiO<subscript>2</subscript> photocatalyst-infused coating was used. This study revealed that NO<subscript>x</subscript> reduction can be realized through TiO<subscript>2</subscript> photocatalyst-infused coating in winter or cloudy days with a low solar altitude. It was also confirmed that compared with the UV-A irradiance, the NO gas concentration has a greater effect on the NO<subscript>x</subscript> reduction performance of the TiO<subscript>2</subscript> photocatalyst-infused coating. These findings can be used to evaluate a variety of construction materials with TiO<subscript>2</subscript> photocatalysts in the future. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 25
- Issue :
- 18
- Database :
- Complementary Index
- Journal :
- Molecules
- Publication Type :
- Academic Journal
- Accession number :
- 146144169
- Full Text :
- https://doi.org/10.3390/molecules25184087