Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States.
Nano Lett. 2020 May 13;20(5):2939-2940. doi: 10.1021/acs.nanolett.0c01308. Epub 2020 Apr 3.
Plasmonic photocatalysis has emerged as a new frontier in heterogeneous catalysis due to its promise in harvesting light to drive reactions. Yet many mechanistic aspects remain to be unambiguously defined. Using single-molecule fluorescence imaging, Li et al. studied a fluorogenic and plasmon-enhanced reaction, amplex red oxidation, on single Au nanorods at subturnover resolution and under operando conditions. Both the rate-determining step and its activation energy were identified from the multiple elemental reactions. The results provide insights into the mechanism of plasmonic photocatalysis that may help the rational design of heterogeneous catalysts.
等离子体光催化作为多相催化领域的一个新兴前沿，因其在利用光驱动反应方面的潜力而备受关注。然而，许多机制方面仍有待明确界定。在单分子荧光成像的帮助下，Li 等人在亚循环分辨率和操作条件下，对单个 Au 纳米棒上的荧光和等离子体增强反应——安普乐红氧化进行了研究。通过多个基元反应确定了速率决定步骤及其活化能。这些结果为等离子体光催化的机制提供了深入的见解，这可能有助于异相催化剂的合理设计。
