Surface-enhanced Raman Spectroscopy for Versatile In Situ Measurements of Local pH near Electrode Surface

Kohei Ide, Masahiro Kunimoto, Satoru Yoshida, Masahiro Yanagisawa, Takayuki Homma*

*この研究の対応する著者

研究成果: Article査読

抄録

We designed an in situ surface-enhanced Raman spectroscopy (SERS) system to detect pH change near the electrode surface. An optically transparent substrate covered with Ag nanoparticles (NPs) that induce SERS was positioned vertically to the electrode. A probe molecule that protonates/deprotonates according to the change in pH of surroundings were distributed nearby the NPs, so that the SERS spectrum of the probe indicated the pH changes in the vertical direction to the electrode due to hydrogen consumption. Flexible choices of probe molecules allow the system to be versatile. The system operated effectively in Ni electrodeposition as a case example.

本文言語English
ジャーナルElectroanalysis
DOI
出版ステータスAccepted/In press - 2022

ASJC Scopus subject areas

  • 分析化学
  • 電気化学

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