A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ambient atmospheric application and influencing factors of ozone catalytic decomposition materials in a channel test
https://orcid.org/0000-0002-4226-7411
https://orcid.org/0000-0003-1878-0669
Abstract Surface ozone pollution is a significant environmental problem. In addition to the control of ozone precursors, direct catalytic decomposition of ozone is an effective control method with broad prospects. At present, the evaluation of the ozone decomposition performance of catalysts is typically performed in the laboratory, and the lack of scientific evaluation means to apply them to complex ambient atmosphere limits the practical application of ozone removal catalysts. Here, we devised a new evaluation method for ozone catalytic decomposition materials in the ambient atmosphere that can comprehensively evaluate the influence of various factors in the ambient atmosphere on performance. The results showed that ozone catalytic decomposition materials can maintain a decomposition efficiency of more than 20% in ambient atmosphere. The decomposition efficiency is mainly affected by distance, the closer the distance; the higher the decomposition efficiency. In addition, the concentration of ozone in the environment also affects the decomposition efficiency and shows a positive correlation. As the ozone concentration increased, the decomposition efficiency increased. An increase in relative humidity can cause a decline in decomposition efficiency, but this effect is eliminated with a decrease in humidity. In addition, the ozone catalytic decomposition materials can reduce the ozone concentration in the environment from 160 μg/m3to less than 100 μg/m3, which can play a great role in environmental ozone pollution control.
Graphical abstract Display Omitted
Highlights We established the test of ozone decomposition materials in ambient atmosphere. Ozone decomposition materials can maintain 20% average purification efficiency. We discussed the effects of distance, ozone concentration, and relative humidity.
Ambient atmospheric application and influencing factors of ozone catalytic decomposition materials in a channel test
https://orcid.org/0000-0002-4226-7411
https://orcid.org/0000-0003-1878-0669
Abstract Surface ozone pollution is a significant environmental problem. In addition to the control of ozone precursors, direct catalytic decomposition of ozone is an effective control method with broad prospects. At present, the evaluation of the ozone decomposition performance of catalysts is typically performed in the laboratory, and the lack of scientific evaluation means to apply them to complex ambient atmosphere limits the practical application of ozone removal catalysts. Here, we devised a new evaluation method for ozone catalytic decomposition materials in the ambient atmosphere that can comprehensively evaluate the influence of various factors in the ambient atmosphere on performance. The results showed that ozone catalytic decomposition materials can maintain a decomposition efficiency of more than 20% in ambient atmosphere. The decomposition efficiency is mainly affected by distance, the closer the distance; the higher the decomposition efficiency. In addition, the concentration of ozone in the environment also affects the decomposition efficiency and shows a positive correlation. As the ozone concentration increased, the decomposition efficiency increased. An increase in relative humidity can cause a decline in decomposition efficiency, but this effect is eliminated with a decrease in humidity. In addition, the ozone catalytic decomposition materials can reduce the ozone concentration in the environment from 160 μg/m3to less than 100 μg/m3, which can play a great role in environmental ozone pollution control.
Graphical abstract Display Omitted
Highlights We established the test of ozone decomposition materials in ambient atmosphere. Ozone decomposition materials can maintain 20% average purification efficiency. We discussed the effects of distance, ozone concentration, and relative humidity.
Ambient atmospheric application and influencing factors of ozone catalytic decomposition materials in a channel test
https://orcid.org/0000-0002-4226-7411
https://orcid.org/0000-0003-1878-0669
Abstract Surface ozone pollution is a significant environmental problem. In addition to the control of ozone precursors, direct catalytic decomposition of ozone is an effective control method with broad prospects. At present, the evaluation of the ozone decomposition performance of catalysts is typically performed in the laboratory, and the lack of scientific evaluation means to apply them to complex ambient atmosphere limits the practical application of ozone removal catalysts. Here, we devised a new evaluation method for ozone catalytic decomposition materials in the ambient atmosphere that can comprehensively evaluate the influence of various factors in the ambient atmosphere on performance. The results showed that ozone catalytic decomposition materials can maintain a decomposition efficiency of more than 20% in ambient atmosphere. The decomposition efficiency is mainly affected by distance, the closer the distance; the higher the decomposition efficiency. In addition, the concentration of ozone in the environment also affects the decomposition efficiency and shows a positive correlation. As the ozone concentration increased, the decomposition efficiency increased. An increase in relative humidity can cause a decline in decomposition efficiency, but this effect is eliminated with a decrease in humidity. In addition, the ozone catalytic decomposition materials can reduce the ozone concentration in the environment from 160 μg/m3to less than 100 μg/m3, which can play a great role in environmental ozone pollution control.
Graphical abstract Display Omitted
Highlights We established the test of ozone decomposition materials in ambient atmosphere. Ozone decomposition materials can maintain 20% average purification efficiency. We discussed the effects of distance, ozone concentration, and relative humidity.
Ambient atmospheric application and influencing factors of ozone catalytic decomposition materials in a channel test
Xie, Shuyang (author) / He, Zhouming (author) / Wang, Yuzheng (author) / Zhang, Renzhe (author) / Ma, Jinzhu (author) / Mu, Yujing (author) / Liu, Junfeng (author) / He, Hong (author)
Atmospheric Environment ; 321
2024-01-11
Article (Journal)
Electronic Resource
English
Catalytic Decomposition of Ozone in Air
| Online Contents | 1997
Influencing factors of aluminate solution carbonation decomposition
| British Library Online Contents | 2002
Factors influencing compaction test results
| Engineering Index Backfile | 1962