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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Theoretical Design and Experimental Realization of Quasi Single Electron Enhancement in Plasmonic Catalysis

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Author(s):
Wang, Jiale [1] ; Alves, Tiago V. [1] ; Trindade, Fabiane J. [1] ; de Aquino, Caroline B. [2] ; Pieretti, Joana C. [2] ; Domingues, Sergio H. [2] ; Ando, Romulo A. [1] ; Ornellas, Fernando R. [1] ; Camargo, Pedro H. C. [1]
Total Authors: 9
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo, SP - Brazil
[2] Univ Prebiteriana Mackenzie, MackGraphe Graphene & Nanomat Res Ctr, BR-01302907 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION; v. 54, n. 48, p. 14427-14431, NOV 23 2015.
Web of Science Citations: 2
Abstract

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. (AU)

FAPESP's process: 13/19861-6 - Controlled metal nanomaterials for catalysis applications
Grantee:Pedro Henrique Cury Camargo
Support type: Regular Research Grants
FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
Grantee:Antônio Hélio de Castro Neto
Support type: Research Projects - SPEC Program
FAPESP's process: 13/05709-8 - Palladium, silver-palladium, and Palladium-Platinum nanomaterials: maneuvering shape, composition, and structure for catalytic applications
Grantee:Jiale Wang
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/07377-2 - Theoretical study of hydrogen transfer reactions: from atmospheric and combustion chemistry to biological chemistry
Grantee:Tiago Vinicius Alves
Support type: Scholarships in Brazil - Post-Doctorate