title: Plasmonic Nanorattles as Next-Generation Catalysts for Surface Plasmon Resonance-Mediated Oxidations Promoted by Activated Oxygen.
abstract: Nanorattles, comprised of a nanosphere inside a nanoshell, were employed as the next generation of plasmonic catalysts for oxidations promoted by activated O2 . After investigating how the presence of a nanosphere inside a nanoshell affected the electric-field enhancements in the nanorattle relative to a nanoshell and a nanosphere, the SPR-mediated oxidation of p-aminothiophenol (PATP) functionalized at their surface was investigated to benchmark how these different electric-field intensities affected the performances of Au@AgAu nanorattles, AgAu nanoshells and Au nanoparticles having similar sizes. The high performance of the nanorattles enabled the visible-light driven synthesis of azobenzene from aniline under ambient conditions. As the nanorattles allow the formation of electromagnetic hot spots without relying on the uncontrolled aggregation of nanostructures, it enables their application as catalysts in liquid phase under mild conditions using visible light as the main energy input.
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Anderson G M
authors.initials: AG
authors.lastname: da Silva
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Thenner S
authors.initials: TS
authors.lastname: Rodrigues
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Valquírio G
authors.initials: VG
authors.lastname: Correia
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Tiago V
authors.initials: TV
authors.lastname: Alves
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Rafael S
authors.initials: RS
authors.lastname: Alves
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Rômulo A
authors.initials: RA
authors.lastname: Ando
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Fernando R
authors.initials: FR
authors.lastname: Ornellas
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.|College of Science, Donghua University, Shanghai, 201620, P.R. China.
authors.forename: Jiale
authors.initials: J
authors.lastname: Wang
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil.
authors.forename: Leandro H
authors.initials: LH
authors.lastname: Andrade
authors.affiliation: Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, 05508-000, São Paulo-SP, Brazil. camargo@iq.usp.br.
authors.forename: Pedro H C
authors.initials: PH
authors.lastname: Camargo
keywords: nanorattles; oxidation; photocatalysis; plasmonics; surface plasmon resonances