Institute of Environmental Health and Pollution Control

  HOME   |   About IEHPC   |   People   |   Instrument and Equipment   |   Research   |   Research Platform   |   Join IEHPC   |   中文  


Location: 首页 English >> Content


Master student Qiuju Shi and Post-Doctor Weina Zhang et al. published a paper in Environ. Sci.: Nano

Tue, Apr 21 2020 08:24  Click:[]

Download Address

Qiuju Shi#, Weina Zhang#, Yuemeng Ji*, Jiaxin Wang, Dandan Qin, Jiangyao Chen, Yanpeng Gao, Guiying Li, Taicheng An. Enhanced uptake of glyoxal at the acidic nanoparticle interface: implications for secondary organic aerosol formation. Environ. Sci.: Nano 2020, 7(4):1126-1135.



Glyoxal (GL) represents an important precursor of a secondary organic aerosol (SOA) and has broad biogenic and anthropogenic sources, but the interfacial chemistry of GL contributing to SOA formation is uncertain. Here, we performed molecular dynamics (MD) simulations and quantum chemical (QC) calculations to examine the interfacial process of gaseous GL on aqueous nanoparticles, including probing the GL attraction to the nanoparticles, uptake at the air-nanoparticle interface, and the hydration reaction within the nanoparticles under neutral and acidic conditions. The MD simulations show that the carbonyl O-atom of GL exhibits a preferential orientation to the air-nanoparticle interface. The acidic nanoparticle interface displays a preference for the uptake of gaseous GL relative to the neutral nanoparticle interface, showing that the presence of sulfuric acid (SA) enhances the adsorption and accommodation for GL. In addition, SA accelerates the aqueous reaction of GL inside the interior region of the nanoparticle, which indirectly promotes the uptake at the nanoparticle interface. Our results reveal the significantly enhanced uptake of GL at the acidic nanoparticle interface, highlighting the necessity to account for the interfacial process when assessing SOA formation.



PreNews:Master student Xin Ding et al. published a paper in Nanoscale NextNews:Our institute's 4 papers was selected as best papers 2019 of RSC: Environ. Sci.: Nano


Institute of Environmental Health and Pollution Control,Guangdong University of Technology 

『』 『WeChat Official Accounts:GDUT-iehpc』