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Predominance of aminated water interfaces on transition-metal nanoparticulate to enhance synergetic removal of carbonyls and inhibition of CO2 production.
Li, Haiwei; Zhang, Zihao; Ho, Wingkei; Huang, Yu; Chen, Mindong; Ge, Xinlei.
Afiliación
  • Li H; Joint International Research Laboratory of Climate and Environment Change, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing
  • Zhang Z; Joint International Research Laboratory of Climate and Environment Change, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing
  • Ho W; Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China.
  • Huang Y; State Key Laboratory of Loess and Quaternary Geology (SKLLQG) and Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
  • Chen M; Joint International Research Laboratory of Climate and Environment Change, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing
  • Ge X; Joint International Research Laboratory of Climate and Environment Change, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing
Environ Res ; : 120042, 2024 Sep 20.
Article en En | MEDLINE | ID: mdl-39307230
ABSTRACT
In the context of the air quality co-benefits of carbon neutrality, conventional strategies for the end-of-pipe control reduction of volatile organic compounds (VOCs) towards carbon dioxide (CO2) need to be revised more realistically. This study explored the synergetic removal of carbonyls with low carbon emission by amine-functionalized manganese dioxide (MnO2), obtained with a method involving freezing-thawing cycles. Molecular-level characterization revealed that an ordered array of interfacial water dimers (H5O2+, a class of water-proton clusters) on the MnO2 surface enhanced the robust bonding of metal sites with amino groups. Amine-functionalized MnO2 can be negatively charged under environmental acidity to further interfacial proton-coupled electron transfers. Cooperativity in the interfacial chemical processes facilitated the selective conversion of carbonyl carbons to bicarbonated amides (NH3+HCO3-) as a reservoir of CO2. Compared with a commercially used 2,4-dinitrophenylhydrazine (DNPH) control, the nearly complete removal of a priority carbonyl mixture containing formaldehyde, acetaldehyde, and acetone was attained synergically. The secondary organic compounds in the gas phase and CO2 off-gas were suppressed.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos