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dc.contributor.author
Li, Shujin
dc.contributor.author
Zhao, Bofan
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Aguirre, Alejo
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Wang, Yu
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Li, Ruoxi
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Yang, Sisi
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Aravind, Indu
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Cai, Zhi
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Chen, Ran
dc.contributor.author
Jensen, Lasse
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Cronin, Stephen B.
dc.date.available
2021-07-11T20:17:53Z
dc.date.issued
2021-04
dc.identifier.citation
Li, Shujin; Zhao, Bofan; Aguirre, Alejo; Wang, Yu; Li, Ruoxi; et al.; Monitoring Reaction Intermediates in Plasma-Driven SO2, NO, and NO2 Remediation Chemistry Using in Situ SERS Spectroscopy; American Chemical Society; Analytical Chemistry; 93; 16; 4-2021; 6421-6427
dc.identifier.issn
0003-2700
dc.identifier.uri
http://hdl.handle.net/11336/135787
dc.description.abstract
In situ surface-enhanced Raman scattering (SERS) spectroscopy is used to identify the key reaction intermediates during the plasma-based removal of NO and SO2 under dry and wet conditions on Ag nanoparticles. Density functional theory (DFT) calculations are used to confirm the experimental observations by calculating the vibrational modes of the surface-bound intermediate species. Here, we provide spectroscopic evidence that the wet plasma increases the SO2 and the NOx removal through the formation of highly reactive OH radicals, driving the reactions to H2SO4 and HNO3, respectively. We observed the formation of SO3 and SO4 species in the SO2 wet-plasma-driven remediation, while in the dry plasma, we only identified SO3 adsorbed on the Ag surface. During the removal of NO in the dry and wet plasma, both NO2 and NO3 species were observed on the Ag surface; however, the concentration of NO3 species was enhanced under wet-plasma conditions. By closing the loop between the experimental and DFT-calculated spectra, we identified not only the adsorbed species associated with each peak in the SERS spectra but also their orientation and adsorption site, providing a detailed atomistic picture of the chemical reaction pathway and surface interaction chemistry.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
sers
dc.subject
ramman
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Otras Ingeniería Química
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Ingeniería Química
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Monitoring Reaction Intermediates in Plasma-Driven SO2, NO, and NO2 Remediation Chemistry Using in Situ SERS Spectroscopy
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-07-01T17:33:04Z
dc.journal.volume
93
dc.journal.number
16
dc.journal.pagination
6421-6427
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Washington
dc.description.fil
Fil: Li, Shujin. University of Southern California; Estados Unidos
dc.description.fil
Fil: Zhao, Bofan. University of Southern California; Estados Unidos
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Fil: Aguirre, Alejo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Wang, Yu. University of Southern California; Estados Unidos
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Fil: Li, Ruoxi. University of Southern California; Estados Unidos
dc.description.fil
Fil: Yang, Sisi. University of Southern California; Estados Unidos
dc.description.fil
Fil: Aravind, Indu. University of Southern California; Estados Unidos
dc.description.fil
Fil: Cai, Zhi. University of Southern California; Estados Unidos
dc.description.fil
Fil: Chen, Ran. University of Southern California; Estados Unidos
dc.description.fil
Fil: Jensen, Lasse. University of Southern California; Estados Unidos
dc.description.fil
Fil: Cronin, Stephen B.. University of Southern California; Estados Unidos
dc.journal.title
Analytical Chemistry
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.analchem.0c05413
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acs.analchem.0c05413
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