am9b20843_si_001.pdf (1.26 MB)
Plasmonic Nanoparticle Film for Low-Power NIR-Enhanced Photocatalytic Reaction
journal contribution
posted on 2020-03-05, 21:04 authored by Wenkai Liang, Yinghui Sun, Zhiqiang Liang, Dong Li, Yawen Wang, Wei Qin, Lin JiangPlasmonic
metal nanostructures offer the unique ability to effectively
enhance sunlight harvesting by localized surface plasmon resonance
(LSPR), which can induce direct photocatalytic reactions. However,
only metal nanoparticles with a relatively low magnitude of electromagnetic
field enhancement usually require a high illumination intensity to
ensure the catalytic performance, which greatly limits the solar photocatalytic
efficiency. Herein, we designed plasmonic Au nanoparticle film with
high electromagnetic field enhancement to achieve high-efficiency
catalytic activity under low-power NIR light illumination. This work
minimized the influence of the photothermal effect on the reaction
by using a low illumination intensity and further revealed the main
contribution of plasmon-excited hot electrons to the photochemical
reaction. This study provides important insights into the study of
the mechanism of LSPR in photocatalytic reactions and further improves
the efficiency of solar energy utilization.