Light-Induced Voltages in Catalysis by Plasmonic Nanostructures.,Accounts of Chemical Research

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Light-Induced Voltages in Catalysis by Plasmonic Nanostructures.
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2020-08-07 , DOI: 10.1021/acs.accounts.0c00378
Andrew J Wilson ₁ , Prashant K Jain _{1,

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Affiliation

Plasmonic nanostructures have garnered widescale scientific interest because of their strong light–matter interactions and the tunability of their absorption across the solar spectrum. At the heart of their superlative interaction with light is the resonant excitation of a collective oscillation of electrons in the nanostructure by the incident electromagnetic field. These resonant oscillations are known as localized surface plasmon resonances (LSPRs). In recent years, the community has uncovered intriguing photochemical attributes of noble metal nanostructures arising from their LSPRs. Chemical reactions that are otherwise unfavorable or sluggish in the dark are induced on the nanostructure surface upon photoexcitation of LSPRs. This phenomenon has led to the birth of plasmonic catalysis. The rates of a variety of kinetically challenging reactions are enhanced by plasmon-excited nanostructures. While the potential utility for solar energy harvesting and chemical production is clear, there is a natural curiosity about the precise origin(s) of plasmonic catalysis. One explanation is that the reactions are facilitated by the action of the intensely concentrated and confined electric fields generated on the nanostructure upon LSPR excitation. Another mechanism of activation involves hot carriers transiently produced in the metal nanostructure by damping of LSPRs.

中文翻译：

等离子体纳米结构在催化中的光感应电压。

等离子体等离子纳米结构因其强大的光-物质相互作用以及其在整个太阳光谱范围内的吸收可调性而赢得了广泛的科学兴趣。它们与光的最高级相互作用的核心是入射电磁场对纳米结构中电子的集体振荡的共振激发。这些共振振荡被称为局部表面等离子体共振（LSPR）。近年来，该社区发现了由其LSPR引起的有趣的贵金属纳米结构的光化学属性。LSPRs的光激发会在纳米结构表面引发在黑暗中不利或缓慢的化学反应。这种现象导致了等离子体催化的诞生。等离子体激元激发的纳米结构提高了各种动力学挑战性反应的速率。尽管很清楚太阳能收集和化学生产的潜在效用，但人们对自然等离子体激元催化的确切来源存有好奇。一种解释是，通过LSPR激发，在纳米结构上产生的高度集中和受限的电场的作用促进了反应。激活的另一种机制涉及通过阻尼LSPR在金属纳米结构中短暂产生的热载流子。一种解释是，通过LSPR激发，在纳米结构上产生的高度集中和受限的电场的作用促进了反应。激活的另一机制涉及通过阻尼LSPR在金属纳米结构中短暂产生的热载流子。一种解释是，通过LSPR激发，在纳米结构上产生的高度集中和受限的电场的作用促进了反应。激活的另一种机制涉及通过阻尼LSPR在金属纳米结构中短暂产生的热载流子。

更新日期：2020-09-15

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