The Fault in Their Shapes: Investigating the Surface-Plasmon-Resonance-Mediated Catalytic Activities of Silver Quasi-Spheres, Cubes, Triangular Prisms, and Wires
The Fault in Their Shapes: Investigating the Surface-Plasmon-Resonance-Mediated Catalytic Activities of Silver Quasi-Spheres, Cubes, Triangular Prisms, and Wires
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DOI：
10.1021/acs.langmuir.5b02838
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发表时间：
2015-09-22
期刊：
影响因子：
3.9
通讯作者：
Camargo, Pedro H. C.
中科院分区：
文献类型：
--
作者：
da Silva, Anderson G. M.;Rodrigues, Thenner S.;Camargo, Pedro H. C.
Ag和Au纳米颗粒的表面等离子体共振（SPR）介导的催化活性已经出现了一个相对新的催化前沿，其中可见光可以作为一种环保的能量输入来驱动化学反应。尽管这一现象已被报道用于各种转化，但纳米颗粒形状和晶体结构对活性的影响尚不清楚。在本文中，我们研究了spr介导的Ag准球、立方体、三角形棱柱和金属丝对活化O-2氧化对氨基生物苯酚生成p，p'-二巯基偶氮苯的催化活性。632.8 nm激发下的活度依次为三角形棱柱和准球体>丝>>立方体。这些结果表明，形状、光学性质和晶体结构在检测到的spr介导活性中起重要作用。
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.