Analysis for Causes of Fine dust Formation and Development of Technology for Reduction
- 자연과학대학
- Hit2255
- 2019-05-20
Particulate Matter (PM; fine dust) has recently emerged as a social problem, and discussions on how to solve it are actively taking place in various sectors of society. In order to reduce PM, the government must first scientifically identify how PM is formed, and make efforts to remove the substance responsible for PM based on such scientific verification. Since PM is formed by chemical reactions, efforts are needed to understand the formation of PM from a chemist's point of view and come up with solutions, but unfortunately, chemists' interest in the formation of PM is still not high.
Professor Kim Young-dok (Dept. of Chemistry) recently analyzed materials related to the composition and structure of PM in depth which were reported through the media, while examining the process of forming PM in consideration of the contents of the literature published in the field of atmospheric environment and chemistry. And the results were contributed to the Hankyoreh, Financial News, and Engineering Journal in the form of easy-to-understand writings for the general public who did not major in chemistry. With the recent policy of reducing nitrogen oxides emerging as a countermeasure to PM, he explains that it is difficult to reduce PM by simply reducing nitrogen oxides, and that efforts to reduce compounds such as volatile organic compounds and ammonia should be made simultaneously.
In addition, Prof. Kim is developing eco-friendly materials that reduce volatile organic compounds, nitrogen oxides, etc., by applying visible light-sensitive photocatalysts developed by his lab to sidewalk blocks, and transfers and commercializes this technology. Prof. Kim also has developed a material that absorbs acetaldehyde, a volatile organic compound, and breaks it down into LED lighting. If the material is installed by the width of the school playground (5000m2), 50g of acetaldehyde can be decomposed per hour. These materials were mass-produced and applied to the technology for manufacturing sidewalk blocks to develop eco-friendly sidewalk blocks. While the existing photocatalysts used in sidewalk blocks only respond to ultraviolet light, his photocatalysts can remove air pollutants not only during daytime but also under lightings at night because of their charateristic responding to visible light.
Related articles (Koreans) :
1) http://www.hani.co.kr/arti/opinion/because/890416.html
2) http://www.fnnews.com/news/201904141733309890
3) http://www.engjournal.co.kr/news/articleView.html?idxno=234
4) http://www.lak.co.kr/news/boardview.php?id=6561
5) http://www.fnnews.com/news/201903271730414463
6) https://www.mk.co.kr/news/business/view/2019/03/194293/
7) http://www.hankookilbo.com/News/Read/201905021677015389
8) http://www.lak.co.kr/news/boardview.php?id=6561