The chemical potential of plasmonic excitations.
The chemical potential of plasmonic excitations.
复制标题
等离子体激发的化学势。
作者：
Sungju Yu;P. Jain
通过金属纳米粒子的局域表面等离子体共振的光激发，可以产生驱动氧化还原反应的反应当量。我们表明，在这种情况下，等离子体激发会产生化学势。该化学势是光浓度的函数，正如我们根据金纳米粒子上等离激元激发驱动的 CO 2 还原中的光强度依赖性活性确定的那样。我们的发现允许将等离子体激发作为化学反应中的试剂进行处理；该试剂的化学势可通过光强度调节。
By the photoexcitation of localized surface plasmon resonances of metal nanoparticles, one can generate reaction equivalents for driving redox reactions. We show that, in such cases, there is a chemical potential contributed by the plasmonic excitation. This chemical potential is a function of the concentration of light, as we determine from the light intensity-dependent activity in plasmon-excitation-driven CO 2 reduction on Au nanoparticles. Our finding allows the treatment of plasmonic excitation as a reagent in chemical reactions; the chemical potential of this reagent is tunable by the light intensity.