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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION; v. 54, n. 48, p. 14427-14431, NOV 23 2015.
• Citações Web of Science: 2

Resumo

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)

• Processo FAPESP: 13/19861-6 - Nanomateriais metálicos controlados para aplicações em catálise
• Beneficiário: Pedro Henrique Cury Camargo
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/50259-8 - Grafeno: fotônica e opto-eletrônica: colaboração UPM-NUS
• Beneficiário: Antônio Hélio de Castro Neto
• Linha de fomento: Auxílio à Pesquisa - Programa SPEC
• Processo FAPESP: 13/05709-8 - Nanomateriais de paládio, prata-paládio e paládio-platina: controlando forma, composição e estrutura para aplicações em catálise
• Beneficiário: Jiale Wang
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07377-2 - Estudo teórico de reações de transferência de hidrogênio: da química de combustão e atmosférica à química biológica
• Beneficiário: Tiago Vinicius Alves
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado