Spectroelectrochemistry an emerging field that combines spectroscopic techniques with electrochemistry to study complex chemical transformations.[1] Infrared spectroscopy is one of those techniques whose utility in complex environments such as <i>in situ </i>monitoring of chemical reactions is being explored.[2] Within the past three decades polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) has been developed as the most sensitive infrared technique suited for <i>in-situ</i>and surface studies.[3] However, the challenge with PM-IRRAS has been the interpretation of the spectra because of its unique features/artefacts from the photoelastic modulator (PEM), which required tedious calibrations.[4] In our research group, we have developed a new approach for processing and presenting PM-IRRAS data which is very powerful in identifying surface adsorbed species and inferring the reaction dynamics at interfaces as shown in Figure 1.[5–7] This presentation will highlight this progress and the direction of our future work in spectroelectrochemical study of solid-liquid and solid-gas interphase catalytic reactions in the instance of ethanol, glycerol and ammonia electrooxidation and electrochemical promotion of catalysis (EPOC) phenomenon.

Application of polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) in electrocatalysis and electrochemical promotion of catalysis

2019 Fall National Meeting

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