Surface-Enhanced Infrared Spectroscopic Study of a CO-Covered Pt Electrode in Room-Temperature Ionic Liquid

ATR-SEIRAS is extended for the first time to study potential-induced surface and interface structure variation of a CO-covered Pt electrode in a room-temperature ionic liquid of N-butyl-N-methyl-piperidinium bis((trifluoromethyl)sulfonyl)imide (or [Pip14][TNf2]). Owing to a wide effective potential...

Full description

Saved in:
Bibliographic Details
Published inThe journal of physical chemistry letters Vol. 4; no. 10; pp. 1582 - 1586
Main Authors Yang, Yao-Yue, Zhang, Li-Na, Osawa, Masatoshi, Cai, Wen-Bin
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 16.05.2013
Subjects
Surfaces, Interfaces, Porous Materials, and Catalysis
electrochemical interface
ionic rearrangement
adsorption site conversion
Stark tuning rate
apparent absorption coefficient
Online AccessGet full text

Cover

More Information
Summary:ATR-SEIRAS is extended for the first time to study potential-induced surface and interface structure variation of a CO-covered Pt electrode in a room-temperature ionic liquid of N-butyl-N-methyl-piperidinium bis((trifluoromethyl)sulfonyl)imide (or [Pip14][TNf2]). Owing to a wide effective potential window of [Pip14][TNf2], a gradual conversion from bridged COad (COB) to terminal COad (COL) is observed in response to positively going potentials, suggesting that [Pip14]+ may be involved in a strong electrostatic interaction with the COad. This site conversion enables the ratio of the apparent absorption coefficient of COL to that of COB to be determined. Also, the spectral results reveal the potential-dependent COad frequency variations as well as the potential-induced interfacial ionic reorientation and movement at the Pt/CO/[Pip14][TNf2] interface.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1948-7185
1948-7185
DOI:10.1021/jz400657t