等离子体激元辅助电子轰击的最新发展--个人观点
Recent developments in plasmon-assisted photocatalysis -- a personal perspective
摘要:
多年来,人们已经知道金属纳米颗粒可以通过不同的机制在黑暗和光照下催化各种化学反应。在过去的十年左右,等离子体辅助的“热”电子驱动的键解离反应的催化的许多索赔已被提出。这些说法是最近一系列论文中的\XYZ{challenged},其中详细研究了“热”电子产生的基本理论和在化学反应中使用特定实验装置来发现它们。从这些工作中得出的结论是,只要系统内部存在温度梯度(对于典型的实验设置),非热效应的量化几乎是不可能的。相反,标准的热理论被证明能够相当准确地解释实验结果。在这里,我们从个人的角度回顾了导致这些结论的中心思想。我们列出了理论的关键方面,并指出在进行光催化实验时必须注意的具体警告。最后,我们提出了一些未来的研究方向。
英文摘要:
It has been known for many years that metallic nanoparticles can catalyse various chemical reactions, both in the dark and under illumination, through different mechanisms. In the last decade or so, many claims of plasmon-assisted "hot" electron driven catalysis of bond-dissociation reactions have been put forward. These claims were \XYZ{challenged} in a recent series of papers, where both the underlying theory of "hot" electron generation and the use of specific experimental setups to discover them in chemical reactions were examined in detail. The conclusion that arose from these works is that as long as temperature gradients exist inside the system (as for typical experimental setups) a quantification of non-thermal effects is close to impossible. Instead, a standard thermal theory was shown to be capable of explaining the experimental findings quite accurately. Here, we review the central lines of thought that led to these conclusions, from a personal perspective. We lay out the key aspects of the theory, and point to the specific caveats one must be aware of in performing photo-catalysis experiments. Finally, we provide some future directions of study.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。