Issue 8, 2022

In situ mass analysis of surface reactions using surface-enhanced Raman spectroscopy covering a wide range of frequencies

Abstract

Heterogeneous electrochemical and photoelectrochemical reactions occurring at a metal surface were observed in situ using surface-enhanced Raman spectroscopy (SERS), which simultaneously covers 10–1800 cm−1 including both intramolecular skeletal vibrations in the fingerprint region and extramolecular surface–adsorbate vibrations in the terahertz (THz) region. While fingerprint vibrations are commonly used for chemical identification, THz vibrations can provide information about mass changes of surface adsorbates in a surface reaction. We demonstrate that such frequency-extended SERS can provide more comprehensive analytical information about surface reactions, which is a better alternative to the combined analysis of conventional SERS spectroscopy and mass spectrometry.

Graphical abstract: In situ mass analysis of surface reactions using surface-enhanced Raman spectroscopy covering a wide range of frequencies

Supplementary files

Article information

Article type
Paper
Submitted
01 feb 2022
Accepted
14 mar 2022
First published
15 mar 2022

Catal. Sci. Technol., 2022,12, 2670-2676

In situ mass analysis of surface reactions using surface-enhanced Raman spectroscopy covering a wide range of frequencies

T. Kondo, M. Inagaki, K. Motobayashi and K. Ikeda, Catal. Sci. Technol., 2022, 12, 2670 DOI: 10.1039/D2CY00229A

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