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

Langmuir : the ACS Journal of Surfaces and Colloids
Anderson G M da SilvaPedro H C Camargo

Abstract

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-aminothiophenol to p,p'-dimercaptoazobenzene by activated O2. 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.

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Citations

Sep 1, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Wei-Chang ChangDe-Hao Tsai
Jun 7, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Joshua S SantanaSara E Skrabalak
Mar 25, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Zengchao GuoXuemei Wang
Apr 19, 2018·Anais Da Academia Brasileira De Ciências·Rafael S GeonmonondPedro H C Camargo
Nov 15, 2019·Chemical Reviews·Alexandra GelléAudrey Moores

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