Direct Photocatalysis by Plasmonic Nanostructures
Direct Photocatalysis by Plasmonic Nanostructures
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DOI：
10.1021/cs400993w
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发表时间：
2014-01-01
期刊：
影响因子：
12.9
通讯作者：
Christopher, Phillip
中科院分区：
文献类型：
--
作者：
Kale, Matthew J.;Avanesian, Talin;Christopher, Phillip
最近的报道表明，等离子体纳米结构可用于驱动与可见光子的直接接触，其中纳米结构充当光吸收剂和催化活性位点。这些报告已经展示了直接等离子体激元驱动的光催化剂作为将低强度可见光的能量集中和引导到吸附分子中的途径，提高了化学转化的速率，并提供了控制反应选择性的途径。在这个角度来看，我们将讨论的基本物理局域表面等离子体共振（LSPR）激发的背景下，驱动化学转化。将审查使用直接等离子体激元转换执行的各种证明的化学转化。实验观察，如光催化速率对光照强度和光子能量的依赖性，将与光催化的微观机制有关。此外，直接等离子体激元激发过程中的各种机制的理论处理将被讨论和相关的实验研究。在整个透视图中，将讨论激活靶向吸附物键以允许在直接等离子体激元激发中合理操纵反应选择性的可能性。
Recent reports have shown that plasmonic nanostructures can be used to drive direct photocatalysis with visible photons, where nanostructures act as the light absorber and the catalytic active site. These reports have showcased direct plasmon driven photocatalysis as a route to concentrate and channel the energy of low intensity visible light into adsorbed molecules, enhancing the rates of chemical transformations, and offering pathways to control reaction selectivity. In this perspective, we will discuss the fundamental photophysics of localized surface plasmon resonance (LSPR) excitation in the context of driving chemical transformations. The various demonstrated chemical conversions executed using direct plasmonic photocatalysis will be reviewed. Experimental observations, such as the dependence of photocatalytic rate on illumination intensity and photon energy, will be related to microscopic mechanisms of photocatalysis. In addition, theoretical treatments of various mechanisms within the process of direct plasmonic photocatalysis will be discussed and related to experimental studies. Throughout the Perspective, the possibility of activating targeted adsorbate bonds to allow rational manipulation of reaction selectivity in direct plasmonic photocatalysis will be discussed.