研究目的
Investigating the use of Surface-Enhanced Infrared Absorption Spectroscopy (SEIRAS) for the study of electrochemical processes at electrode–electrolyte interfaces.
研究成果
ATR-SEIRAS is a valuable tool for the investigation of adsorption processes at electrode–electrolyte interfaces, offering advantages over traditional IRRAS by not suffering from hindered mass transport and enabling time-resolved measurements. The enhancement of IR absorption by molecules at the metal film surface is a key feature of this technique.
研究不足
The study is limited by the need for clean metal sources and the careful preparation of metal films to avoid contamination. Additionally, the method requires specific prism materials and shapes for optimal performance.
1：Experimental Design and Method Selection:
The study utilizes the internal reflection configuration, also known as Kretschmann’s attenuated total reflection (ATR) configuration, for electrochemical investigations. A metal film deposited on a planar surface of an IR-transparent prism serves as the working electrode.
2：Sample Selection and Data Sources:
The study focuses on the interaction of IR radiation with species adsorbed on metal films in the proximity of an electrode surface.
3：List of Experimental Equipment and Materials:
Includes IR-transparent prisms, metal films (Ag, Cu, Au, Pt, Pd, Rh, Pb, etc.), and an FT-IR spectrometer.
4：Experimental Procedures and Operational Workflow:
The IR incident beam is totally reflected at the inner side of the planar surface to form an evanescent wave that penetrates into the electrolyte through the metal film.
5：Data Analysis Methods:
The study analyzes the enhancement of IR absorption of molecules at the metal film and the surface selection rule.
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