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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

The Fault in Their Shapes: Investigating the Surface-Plasmon-Resonance-Mediated Catalytic Activities of Silver Quasi-Spheres, Cubes, Triangular Prisms, and Wires

Texto completo
Autor(es):
da Silva, Anderson G. M. [1] ; Rodrigues, Thenner S. [1] ; Wang, Jiale [1] ; Yamada, Liliam K. [1] ; Alves, Tiago V. [1] ; Ornellas, Fernando R. [1] ; Ando, Romulo A. [1] ; Camargo, Pedro H. C. [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Langmuir; v. 31, n. 37, p. 10272-10278, SEP 22 2015.
Citações Web of Science: 24
Resumo

The surface-plasmon-resonance (SPR)-mediated catalytic activities of Ag and Au nanoparticles have emerged a relatively new frontier in catalysis in which visible light can be employed as an eco-friendly energy input to drive chemical reactions. Although this phenomenon has been reported for a variety of transformations, the effect of the nanoparticle shape and crystalline structure on the activities remains unclear. In this paper, we investigated the SPR-mediated catalytic activity of Ag quasi-spheres, cubes, triangular prisms, and wires toward the oxidation of p-aminotbiophenol to p,p'-dimercaptoazobenzene by activated O-2. The activities at 632.8 nm excitation followed the order triangular prisms and quasi-spheres > wires >> cubes. These results indicated that the shape, optical properties, and crystal structure played an important role in the detected SPR-mediated activities. (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