Surface plasmon-driven catalytic reactions on a patterned Co3O4/Au inverse catalyst

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We report hot electron-and surface plasmon-driven catalytic reactions on an inverse catalyst that is composed of a reactive cobalt oxide (Co3O4) for the catalyst portion and a metal as the source of localized surface plasmon resonance (LSPR). To achieve this scheme, a patterned Co3O4/Au nanostructure was fabricated using the nanosphere lithography technique. The enhancement of catalytic activity for CO oxidation on cobalt oxide by the transfer of plasmonic hot carriers generated from the LSPR of Au under light irradiation was observed. We found that the Co3O4/Au inverse catalyst exhibited 25-50% higher catalytic activity when under light irradiation. We attribute this enhancement of catalytic activity to the flow of surface plasmon-driven hot carriers that were created by the absorption of photons on the Au metal, followed by injection into the active Co3O4 layers.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2017-12
Language
English
Article Type
Article
Keywords

CARBON-MONOXIDE OXIDATION; CO OXIDATION; GOLD NANOPARTICLES; HOT-ELECTRONS; LIGHT IRRADIATION; OXIDE INTERFACES; LOW-TEMPERATURE; TITANIUM-OXIDE; VISIBLE-LIGHT; RESONANCE

Citation

RSC ADVANCES, v.7, no.88, pp.56073 - 56080

ISSN
2046-2069
DOI
10.1039/c7ra10450b
URI
http://hdl.handle.net/10203/238792
Appears in Collection
EEW-Journal Papers(저널논문)
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