An environmental evaluation of carbonaceous aerosols in PM10 at micro- and nano-scale levels reveals the formation of carbon nanodots
作者: Shahadev RabhaBinoy K. Saikia
作者单位: 1Polymer Petroleum and Coal Chemistry Group, Materials Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, 785006, Assam, India
2Academy of Scientific and Innovative Research, CSIR-NEIST Campus, Jorhat, 785006, India
刊名: Chemosphere, 2020, Vol.244
来源数据库: Elsevier Journal
DOI: 10.1016/j.chemosphere.2019.125519
关键词: Carbonaceous aerosolCarbon nanoparticlesCarbon dotsToxicityClimate impact
英文摘要: Abstract(#br)Carbonaceous aerosols play significant roles in air quality and the climate; their oxidation at the nano-scale level may possibly increase the reactivity and toxicity of atmospheric particulates. In the present study, a laboratory experiment on the atmospheric carbonaceous aerosol was done by using H 2 O 2 as an oxidizing agent. An extensive study made with advanced analytical tools revealed the formation of photoluminescent carbon nanoparticles (carbon nanodots) in the carbonaceous aerosol. The carbon nanoparticles are mostly at the sp 2 hybridization state and contain various surface functional groups such as carboxyl and carbonyl groups. The properties of these carbon nanoparticles resemble the engineered carbon nanoparticles such as carbon dots (CDs). The carbon...
全文获取路径: Elsevier  (合作)
影响因子:3.137 (2012)

  • carbonaceous 碳质的
  • micro 
  • environmental 环境的
  • evaluation 评价
  • scale 度盘
  • formation 建造