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

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]

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

• 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: 13/05709-8 - Palladium, Silver-Palladium, and Palladium-Platinum Nanomaterials: Maneuvering Shape, Composition, and Structure for Catalytic Applications
• Grantee: Jiale Wang
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• 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 Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 12/50259-8 - Graphene: photonics and opto-electronics: UPM-NUS collaboration
• Grantee: Antonio Helio de Castro Neto
• Support Opportunities: Research Projects - SPEC Program
• FAPESP's process: 13/19861-6 - Controlled metal nanomaterials for catalysis applications
• Grantee: Pedro Henrique Cury Camargo
• Support Opportunities: Regular Research Grants