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Theoretical Design and Experimental Realization of Quasi Single Electron Enhancement in Plasmonic Catalysis
Author(s) -
Wang Jiale,
Alves Tiago V.,
Trindade Fabiane J.,
de Aquino Caroline B.,
Pieretti Joana C.,
Domingues Sergio H.,
Ando Romulo A.,
Ornellas Fernando R.,
Camargo Pedro H. C.
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201507807
Subject(s) - electron , electric field , graphene , plasmon , oxide , catalysis , surface plasmon resonance , materials science , nanoparticle , realization (probability) , nanotechnology , field (mathematics) , chemical physics , optoelectronics , chemistry , physics , biochemistry , quantum mechanics , metallurgy , statistics , mathematics , pure mathematics
By a combination of theoretical and experimental design, we probed the effect of a quasi‐single electron on the surface plasmon resonance (SPR)‐mediated catalytic activities of Ag nanoparticles. Specifically, we started by theoretically investigating how the E‐field distribution around the surface of a Ag nanosphere was influenced by static electric field induced by one, two, or three extra fixed electrons embedded in graphene oxide (GO) next to the Ag nanosphere. We found that the presence of the extra electron(s) changed the E‐field distributions and led to higher electric field intensities. Then, we experimentally observed that a quasi‐single electron trapped at the interface between GO and Ag NPs in Ag NPs supported on graphene oxide (GO‐Ag NPs) led to higher catalytic activities as compared to Ag and GO‐Ag NPs without electrons trapped at the interface, representing the first observation of catalytic enhancement promoted by a quasi‐single electron.