10.1021/acsomega.8b00494.s001
Chih-Ping Yang
Chih-Ping
Yang
Sheng-Uei Fang
Sheng-Uei
Fang
Kuang-Hsuan Yang
Kuang-Hsuan
Yang
Hsiao-Chien Chen
Hsiao-Chien
Chen
Hui-Yen Tsai
Hui-Yen
Tsai
Fu-Der Mai
Fu-Der
Mai
Yu-Chuan Liu
Yu-Chuan
Liu
Surface-Enhanced Raman Scattering-Active Substrate
Prepared with New Plasmon-Activated Water
American Chemical Society
2018
DI water-based systems
surface-enhanced Raman
plasmon-activated water
electron-transfer rate
DI water
tetrahedral hydrogen-bonded network
PAW
New Plasmon-Activated Water Conventionally
diffusion coefficient
hydrogen bonds
SERS enhancement
rhodamine 6 G
Surface-Enhanced Raman Scattering-Active Substrate
electrochemical reactions
2018-05-01 12:50:02
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Surface-Enhanced_Raman_Scattering-Active_Substrate_Prepared_with_New_Plasmon-Activated_Water/6205136
Conventionally, reactions
in aqueous solutions are prepared using
deionized (DI) water, the properties of which are related to inert
“bulk water” comprising a tetrahedral hydrogen-bonded
network. In this work, we demonstrate the distinguished benefits of
using in situ plasmon-activated water (PAW) with reduced hydrogen
bonds instead of DI water in electrochemical reactions, which generally
are governed by diffusion and kinetic controls. Compared with DI water-based
systems, the diffusion coefficient and the electron-transfer rate
constant of K<sub>3</sub>Fe(CN)<sub>6</sub> in PAW in situ can be
increased by ca. 35 and 15%, respectively. These advantages are responsible
for the improved performance of surface-enhanced Raman scattering
(SERS). On the basis of PAW in situ, the SERS enhancement of twofold
higher intensity of rhodamine 6G and the corresponding low relative
standard deviation of 5%, which is comparable to and even better than
those based on complicated processes shown in the literature, are
encouraging.