Plasmon-driven surface catalysis on photochemically deposited-based SERS substrates

Donghui Si; Keyuan Feng; Kenji Kitamura; Anping Liu; Liang Pan; Wenhao Li; Ting Liu; Yingzhou Huang; Xiaoyan Liu

doi:10.1364/AO.55.008468

Plasmon-driven surface catalysis on photochemically deposited-based SERS substrates

Appl Opt. 2016 Oct 20;55(30):8468-8471. doi: 10.1364/AO.55.008468.

Authors

Donghui Si, Keyuan Feng, Kenji Kitamura, Anping Liu, Liang Pan, Wenhao Li, Ting Liu, Yingzhou Huang, Xiaoyan Liu

PMID: 27828123
DOI: 10.1364/AO.55.008468

Abstract

For the virtues of convenience and repeatability, photochemically deposited nanoparticles (NPs) as ferroelectric-based surface-enhanced Raman scattering (SERS) substrates have great potential in the surface-plasmon-related applications. In this work, the plasmon-driven surface catalysis (PDSC) reaction is investigated on lithium niobate (LiNbO₃) film with photochemically deposited Au NPs. The SERS spectra indicate that the performance of PDSC reaction on a substrate with various Au³⁺ concentrations in photochemical deposition is obviously different. Combining structure characterization and electromagnetic field simulation, this result is mainly attributed to the surface plasmon coupling between Au NPs. Furthermore, the results also point out that the exposure time in photochemical deposition plays an important role in PDSC reactions. Our studies on photochemically deposited Au NP substrates provide strong support and further understanding to the research on PDSC reactions and also to other surface-plasmon-related fields.