{"title":"探究多因素协同作用对纳米氧化镁颗粒表面硝酸盐形成的重要影响","authors":"Lihui Han, Chaonan Qi, Jian Tian, Tong Lan, Qian Xiao, Shuiyuan Cheng, Wei Wei, Haiyan Wang, Jinghua Guo, Aihua Zheng","doi":"10.1039/d4en00316k","DOIUrl":null,"url":null,"abstract":"With the fast development of motor vehicle quantities in megacities in recent years, nitrate has become a very important component in atmospheric fine particulate matter, and produced significant impacts on haze formations. In the study, a photochemical smog chamber was used to investigate the impacts of atmospheric pollutants as O3, NH3 and SO2 on nitrate heterogeneous formations on the surfaces of nano MgO particles in the two reaction systems of NO2-MgO-dark and NO2-MgO-hν, and the related formation mechanisms. With dark similar to nighttime, O3 played a key role in the nitrate heterogeneous formations on the surfaces of nano MgO particles, and NH3 and SO2 also promoted the nitrate heterogeneous formations, respectively, presenting an order of O3 > SO2 > NH3. It is noted that the synergies of O3 and SO2 or NH3 were more favorable for the nitrate heterogeneous formations. Besides, the nitrite heterogeneous formations were greatly impacted by NH3 and SO2. With UV light like daytime, the synergies of UV light and O3 greatly promoted the nitrate heterogeneous formations, however, NH3 and SO2 exerted an inhibitory effect on the nitrate heterogeneous formations. The nitrate heterogeneous formation mechanisms on the surfaces of nano MgO particles were strongly impacted by UV light, O3, NH3 and SO2, presenting different reaction mechanisms. The synergistic effects of O3, NH3 and SO2 on the nitrate heterogeneous formations at nighttime were obviously higher than those of UV light, O3, NH3 and SO2 at daytime, implying that nighttime was more favorable for nitrate heterogeneous formations.","PeriodicalId":73,"journal":{"name":"Environmental Science: Nano","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigating the vital influences of multi-factor synergies on the nitrate formations on the surface of nano MgO particles\",\"authors\":\"Lihui Han, Chaonan Qi, Jian Tian, Tong Lan, Qian Xiao, Shuiyuan Cheng, Wei Wei, Haiyan Wang, Jinghua Guo, Aihua Zheng\",\"doi\":\"10.1039/d4en00316k\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"With the fast development of motor vehicle quantities in megacities in recent years, nitrate has become a very important component in atmospheric fine particulate matter, and produced significant impacts on haze formations. In the study, a photochemical smog chamber was used to investigate the impacts of atmospheric pollutants as O3, NH3 and SO2 on nitrate heterogeneous formations on the surfaces of nano MgO particles in the two reaction systems of NO2-MgO-dark and NO2-MgO-hν, and the related formation mechanisms. With dark similar to nighttime, O3 played a key role in the nitrate heterogeneous formations on the surfaces of nano MgO particles, and NH3 and SO2 also promoted the nitrate heterogeneous formations, respectively, presenting an order of O3 > SO2 > NH3. It is noted that the synergies of O3 and SO2 or NH3 were more favorable for the nitrate heterogeneous formations. Besides, the nitrite heterogeneous formations were greatly impacted by NH3 and SO2. With UV light like daytime, the synergies of UV light and O3 greatly promoted the nitrate heterogeneous formations, however, NH3 and SO2 exerted an inhibitory effect on the nitrate heterogeneous formations. The nitrate heterogeneous formation mechanisms on the surfaces of nano MgO particles were strongly impacted by UV light, O3, NH3 and SO2, presenting different reaction mechanisms. The synergistic effects of O3, NH3 and SO2 on the nitrate heterogeneous formations at nighttime were obviously higher than those of UV light, O3, NH3 and SO2 at daytime, implying that nighttime was more favorable for nitrate heterogeneous formations.\",\"PeriodicalId\":73,\"journal\":{\"name\":\"Environmental Science: Nano\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.8000,\"publicationDate\":\"2024-07-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Science: Nano\",\"FirstCategoryId\":\"6\",\"ListUrlMain\":\"https://doi.org/10.1039/d4en00316k\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Science: Nano","FirstCategoryId":"6","ListUrlMain":"https://doi.org/10.1039/d4en00316k","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Investigating the vital influences of multi-factor synergies on the nitrate formations on the surface of nano MgO particles
With the fast development of motor vehicle quantities in megacities in recent years, nitrate has become a very important component in atmospheric fine particulate matter, and produced significant impacts on haze formations. In the study, a photochemical smog chamber was used to investigate the impacts of atmospheric pollutants as O3, NH3 and SO2 on nitrate heterogeneous formations on the surfaces of nano MgO particles in the two reaction systems of NO2-MgO-dark and NO2-MgO-hν, and the related formation mechanisms. With dark similar to nighttime, O3 played a key role in the nitrate heterogeneous formations on the surfaces of nano MgO particles, and NH3 and SO2 also promoted the nitrate heterogeneous formations, respectively, presenting an order of O3 > SO2 > NH3. It is noted that the synergies of O3 and SO2 or NH3 were more favorable for the nitrate heterogeneous formations. Besides, the nitrite heterogeneous formations were greatly impacted by NH3 and SO2. With UV light like daytime, the synergies of UV light and O3 greatly promoted the nitrate heterogeneous formations, however, NH3 and SO2 exerted an inhibitory effect on the nitrate heterogeneous formations. The nitrate heterogeneous formation mechanisms on the surfaces of nano MgO particles were strongly impacted by UV light, O3, NH3 and SO2, presenting different reaction mechanisms. The synergistic effects of O3, NH3 and SO2 on the nitrate heterogeneous formations at nighttime were obviously higher than those of UV light, O3, NH3 and SO2 at daytime, implying that nighttime was more favorable for nitrate heterogeneous formations.
期刊介绍:
Environmental Science: Nano serves as a comprehensive and high-impact peer-reviewed source of information on the design and demonstration of engineered nanomaterials for environment-based applications. It also covers the interactions between engineered, natural, and incidental nanomaterials with biological and environmental systems. This scope includes, but is not limited to, the following topic areas:
Novel nanomaterial-based applications for water, air, soil, food, and energy sustainability
Nanomaterial interactions with biological systems and nanotoxicology
Environmental fate, reactivity, and transformations of nanoscale materials
Nanoscale processes in the environment
Sustainable nanotechnology including rational nanomaterial design, life cycle assessment, risk/benefit analysis